askubuntu.com
Free website and domain report on askubuntu.com
Last Updated: 28th May, 2020 Update Now
Overview
Snoop Summary for askubuntu.com
This is a free and comprehensive report about askubuntu.com. The domain askubuntu.com is currently hosted on a server located in United States with the IP address 151.101.129.69, where the local currency is USD and English is the local language. Our records indicate that askubuntu.com is owned/operated by Stack Exchange, Inc.. Askubuntu.com is expected to earn an estimated $10,719 USD per day from advertising revenue. The sale of askubuntu.com would possibly be worth $7,825,117 USD. This figure is based on the daily revenue potential of the website over a 24 month period. Askubuntu.com is unbelievably popular with an estimated 1,151,270 daily unique visitors. This report was last updated 28th May, 2020.
About askubuntu.com
| Site Preview: |   |
| Title: | Ask Ubuntu |
| Description: | Q&A for Ubuntu users and developers |
| Keywords and Tags: | business forums, chmod x, crontab log, dev null, failed to load module canberra gtk module, grub rescue, no such file or directory, rm rf, sudo apt get update, sudo no tty present and no askpass program specified, technical, unzip linux |
| Related Terms: | debian vs ubuntu, instalar dia ubuntu, install ubuntu, mediacoder ubuntu, recuperar particion eliminada ubuntu, ubuntu 16.04, ubuntu 18.04, ubuntu precise, ubuntu set static ip, vagrant ubuntu |
| Fav Icon: | |
| Age: | Over 13 years old |
| Domain Created: | 30th July, 2010 |
| Domain Updated: | 8th January, 2020 |
| Domain Expires: | 2nd February, 2021 |
Review
Snoop Score
5/5 (Perfect!)
Valuation
$7,825,117 USD
Note: All valuation figures are estimates.
Popularity
Worldwide Sensation
Note: Popularity is estimated.
Rank, Reach and Authority
| Alexa Rank: | 2,068 |
| Alexa Reach: | 0.0345% |
| SEMrush Rank (US): | 6,271 |
| SEMrush Authority Score: | 77 |
| Moz Domain Authority: | |
| Moz Page Authority: |
Rank By Country
| Country | Alexa Rank |
|---|---|
 Argentina | 2,951 |
 Australia | 2,534 |
 Bangladesh | 796 |
 Brazil | 2,079 |
 Canada | 2,106 |
 Switzerland | 1,775 |
 China | 8,122 |
 Germany | 2,252 |
 Egypt | 1,579 |
 France | 3,622 |
 United Kingdom | 4,233 |
 Greece | 1,793 |
 Hong Kong | 1,844 |
 Indonesia | 1,706 |
 Israel | 1,207 |
 India | 619 |
 Iran, Islamic Republic Of | 1,258 |
 Japan | 4,322 |
 Korea Republic Of | 3,995 |
 Mexico | 2,160 |
 Nigeria | 2,594 |
 Netherlands | 3,390 |
 Philippines | 2,143 |
 Pakistan | 1,141 |
 Russian Federation | 9,719 |
 Saudi Arabia | 2,002 |
 Singapore | 1,541 |
 Tunisia | 951 |
 Turkey | 1,474 |
 Taiwan, Province Of China | 2,750 |
 United States | 2,350 |
 Viet Nam | 1,100 |
Organic vs Paid (Google Ads)
| Organic | Paid | |
|---|---|---|
| Keywords: | 642,786 | 0 |
| Traffic: | 474,776 | 0 |
| Cost: | $129,919 USD | $0 USD |
Traffic
Visitors
| Daily Visitors: | 1,151,270 |
| Monthly Visitors: | 35,041,032 |
| Yearly Visitors: | 420,213,550 |
Note: All visitors figures are estimates.
Visitors By Country
| Country | Visitors (Unique) | Percentage |
|---|---|---|
| Argentina | Daily: 8,059 Monthly: 245,287 Yearly: 2,941,495 | 0.7% |
| Australia | Daily: 12,664 Monthly: 385,451 Yearly: 4,622,349 | 1.1% |
| Bangladesh | Daily: 13,815 Monthly: 420,492 Yearly: 5,042,563 | 1.2% |
| Brazil | Daily: 51,807 Monthly: 1,576,846 Yearly: 18,909,610 | 4.5% |
| Canada | Daily: 21,874 Monthly: 665,780 Yearly: 7,984,057 | 1.9% |
| Switzerland | Daily: 11,513 Monthly: 350,410 Yearly: 4,202,136 | 1% |
| China | Daily: 14,967 Monthly: 455,533 Yearly: 5,462,776 | 1.3% |
| Germany | Daily: 41,446 Monthly: 1,261,477 Yearly: 15,127,688 | 3.6% |
| Egypt | Daily: 16,118 Monthly: 490,574 Yearly: 5,882,990 | 1.4% |
| France | Daily: 16,118 Monthly: 490,574 Yearly: 5,882,990 | 1.4% |
| United Kingdom | Daily: 8,059 Monthly: 245,287 Yearly: 2,941,495 | 0.7% |
| Greece | Daily: 12,664 Monthly: 385,451 Yearly: 4,622,349 | 1.1% |
| Hong Kong | Daily: 9,210 Monthly: 280,328 Yearly: 3,361,708 | 0.8% |
| Indonesia | Daily: 17,269 Monthly: 525,615 Yearly: 6,303,203 | 1.5% |
| Israel | Daily: 6,908 Monthly: 210,246 Yearly: 2,521,281 | 0.6% |
| India | Daily: 293,574 Monthly: 8,935,463 Yearly: 107,154,455 | 25.5% |
| Iran, Islamic Republic Of | Daily: 54,110 Monthly: 1,646,929 Yearly: 19,750,037 | 4.7% |
| Japan | Daily: 46,051 Monthly: 1,401,641 Yearly: 16,808,542 | 4% |
| Korea Republic Of | Daily: 13,815 Monthly: 420,492 Yearly: 5,042,563 | 1.2% |
| Mexico | Daily: 19,572 Monthly: 595,698 Yearly: 7,143,630 | 1.7% |
| Nigeria | Daily: 9,210 Monthly: 280,328 Yearly: 3,361,708 | 0.8% |
| Netherlands | Daily: 6,908 Monthly: 210,246 Yearly: 2,521,281 | 0.6% |
| Other | Daily: 170,388 Monthly: 5,186,073 Yearly: 62,191,605 | 14.8% |
| Philippines | Daily: 5,756 Monthly: 175,205 Yearly: 2,101,068 | 0.5% |
| Pakistan | Daily: 20,723 Monthly: 630,739 Yearly: 7,563,844 | 1.8% |
| Russian Federation | Daily: 9,210 Monthly: 280,328 Yearly: 3,361,708 | 0.8% |
| Saudi Arabia | Daily: 12,664 Monthly: 385,451 Yearly: 4,622,349 | 1.1% |
| Singapore | Daily: 10,361 Monthly: 315,369 Yearly: 3,781,922 | 0.9% |
| Tunisia | Daily: 5,756 Monthly: 175,205 Yearly: 2,101,068 | 0.5% |
| Turkey | Daily: 28,782 Monthly: 876,026 Yearly: 10,505,339 | 2.5% |
| Taiwan, Province Of China | Daily: 12,664 Monthly: 385,451 Yearly: 4,622,349 | 1.1% |
| United States | Daily: 149,665 Monthly: 4,555,334 Yearly: 54,627,762 | 13% |
| Viet Nam | Daily: 19,572 Monthly: 595,698 Yearly: 7,143,630 | 1.7% |
Note: All visitors figures are estimates.
Revenue
Revenue
| Daily Revenue: | $10,719 USD |
| Monthly Revenue: | $326,262 USD |
| Yearly Revenue: | $3,912,554 USD |
Note: All revenue figures are estimates.
Revenue By Country
| Country | Revenue | Percentage |
|---|---|---|
| Argentina | Daily: $2 USD Monthly: $53 USD Yearly: $639 USD | <0.1% |
| Australia | Daily: $37 USD Monthly: $1,113 USD Yearly: $13,348 USD | 0.3% |
| Bangladesh | Daily: $6 USD Monthly: $176 USD Yearly: $2,106 USD | 0.1% |
| Brazil | Daily: $61 USD Monthly: $1,855 USD Yearly: $22,243 USD | 0.6% |
| Canada | Daily: $93 USD Monthly: $2,846 USD Yearly: $34,126 USD | 0.9% |
| Switzerland | Daily: $15 USD Monthly: $466 USD Yearly: $5,586 USD | 0.1% |
| China | Daily: $37 USD Monthly: $1,141 USD Yearly: $13,683 USD | 0.3% |
| Germany | Daily: $263 USD Monthly: $7,992 USD Yearly: $95,846 USD | 2.4% |
| Egypt | Daily: $3 USD Monthly: $93 USD Yearly: $1,118 USD | <0.1% |
| France | Daily: $57 USD Monthly: $1,722 USD Yearly: $20,647 USD | 0.5% |
| United Kingdom | Daily: $63 USD Monthly: $1,929 USD Yearly: $23,128 USD | 0.6% |
| Greece | Daily: $4 USD Monthly: $136 USD Yearly: $1,631 USD | <0.1% |
| Hong Kong | Daily: $3 USD Monthly: $87 USD Yearly: $1,043 USD | <0.1% |
| Indonesia | Daily: $29 USD Monthly: $870 USD Yearly: $10,432 USD | 0.3% |
| Israel | Daily: $2 USD Monthly: $74 USD Yearly: $890 USD | <0.1% |
| India | Daily: $2,075 USD Monthly: $63,152 USD Yearly: $757,321 USD | 19.4% |
| Iran, Islamic Republic Of | Daily: $0 USD Monthly: $0 USD Yearly: $0 USD | <0.1% |
| Japan | Daily: $55 USD Monthly: $1,676 USD Yearly: $20,096 USD | 0.5% |
| Korea Republic Of | Daily: $29 USD Monthly: $885 USD Yearly: $10,609 USD | 0.3% |
| Mexico | Daily: $12 USD Monthly: $372 USD Yearly: $4,459 USD | 0.1% |
| Nigeria | Daily: $6 USD Monthly: $169 USD Yearly: $2,030 USD | 0.1% |
| Netherlands | Daily: $14 USD Monthly: $424 USD Yearly: $5,085 USD | 0.1% |
| Other | Daily: $0 USD Monthly: $0 USD Yearly: $0 USD | <0.1% |
| Philippines | Daily: $5 USD Monthly: $165 USD Yearly: $1,977 USD | 0.1% |
| Pakistan | Daily: $20 USD Monthly: $621 USD Yearly: $7,442 USD | 0.2% |
| Russian Federation | Daily: $4 USD Monthly: $122 USD Yearly: $1,458 USD | <0.1% |
| Saudi Arabia | Daily: $7 USD Monthly: $210 USD Yearly: $2,523 USD | 0.1% |
| Singapore | Daily: $5 USD Monthly: $154 USD Yearly: $1,851 USD | <0.1% |
| Tunisia | Daily: $0 USD Monthly: $14 USD Yearly: $166 USD | <0.1% |
| Turkey | Daily: $25 USD Monthly: $757 USD Yearly: $9,081 USD | 0.2% |
| Taiwan, Province Of China | Daily: $3 USD Monthly: $77 USD Yearly: $927 USD | <0.1% |
| United States | Daily: $7,772 USD Monthly: $236,542 USD Yearly: $2,836,620 USD | 72.5% |
| Viet Nam | Daily: $12 USD Monthly: $370 USD Yearly: $4,441 USD | 0.1% |
Note: All revenue figures are estimates.
SEO
Backlinks Analysis (SEMrush)
| Backlinks: | 31,919,274 |
| Referring Domains: | 25,614 |
| Referring IPs: | 26,311 |
Askubuntu.com has 31,919,274 backlinks according to SEMrush. 82% of these backlinks are "dofollow" (follow) links which allow the flow of link equity to pass through, which may improve askubuntu.com's search engine rankings. Other links are treated as 'hints' by search engines and may also pass link equity, depending on what search engines decide in each case.
100% of askubuntu.com's backlinks are text and image links, which are ideal for SEO. Other backlink types may be unrecognized or ignored by search engines.
Top New Follow Links
1
Source: https://superuser.com/
Target: https://askubuntu.com/questions/1240611/is-there-any-ubuntu-sotware-to-draw-math
2
Source: https://serverfault.com/
Target: https://askubuntu.com/questions/1240611/is-there-any-ubuntu-software-to-draw-math
3
Source: https://serverfault.com/
Target: https://askubuntu.com/questions/1234838/is-it-necessary-to-have-a-home-and-swap-partitions-in-20-04
4
Source: https://stackapps.com/
Target: https://askubuntu.com/questions/1240611/is-there-any-ubuntu-sotware-to-draw-math
5
Source: https://stackapps.com/
Target: https://askubuntu.com/questions/1231597/how-can-i-examine-the-files-inside-an-appimage
Top Ranking Keywords (US)
1
Keyword: dev null
Ranked Page: https://askubuntu.com/questions/12098/what-does-outputting-to-dev-null-accomplish-in-bash-scripts
2
Keyword: chmod x
Ranked Page: https://askubuntu.com/questions/443789/what-does-chmod-x-filename-do-and-how-do-i-use-it
3
Keyword: crontab log
Ranked Page: https://askubuntu.com/questions/56683/where-is-the-cron-crontab-log
4
Keyword: sudo apt get update
Ranked Page: https://askubuntu.com/questions/222348/what-does-sudo-apt-get-update-do
5
Keyword: grub rescue
Ranked Page: https://askubuntu.com/questions/232215/stuck-in-grub-rescue-mode
Domain Analysis
| Value | Length | |
|---|---|---|
| Domain: | askubuntu.com | 13 |
| Domain Name: | askubuntu | 9 |
| Extension (TLD): | com | 3 |
| Expiry Check: | |
Page Speed Analysis
| Average Load Time: | 1.04 seconds |
| Load Time Comparison: | Faster than 78% of sites |
PageSpeed Insights
Avg. (All Categories)
Performance
Accessibility
Best Practices
SEO
Progressive Web App
0–49 (Fail) 50–89 (Average) 90–100 (Pass) 
URL: https://askubuntu.com/
Updated: 28th May, 2020
0.82 seconds
First Contentful Paint (FCP)
0.00 seconds
First Input Delay (FID) Simulate loading on desktop
Performance
Indicates how well the page is performing and highlights opportunities where performance may be improved for askubuntu.com. This includes details about optimizing page load times which can result in a better user experience.Metrics
First Contentful Paint — 0.8 s The time taken for the first image or text on the page to be rendered.
Speed Index — 0.8 s The time taken for the page contents to be visibly populated.
Largest Contentful Paint — 0.9 s The timing of the largest text or image that is painted.
Time to Interactive — 1.3 s The time taken for the page to become fully interactive.
Total Blocking Time — 10 ms The total blocking time is the sum of all time periods between First Contentful Paint and Time to Interactive (when task length exceeded 50ms).
Cumulative Layout Shift — 0.085 Cumulative Layout Shift is the measurement of visible elements collective movement within the viewport.
View Data
Other
First CPU Idle — 1.2 s The time taken for the page's main thread to be quiet enough to handle input.
Max Potential First Input Delay — 70 ms Users could experience a delay when interacting with the page.
First Meaningful Paint — 0.8 s The time taken for the primary content of the page to be rendered.
Estimated Input Latency — 10 ms The time taken for the page to respond to user input (during the busiest 5 second window of page load). Users are likely to perceive askubuntu.com as laggy when the latency is higher than 0.05 seconds.
Network Requests Below is a list of network requests that were made during page load.
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|---|---|---|---|---|---|---|---|
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| https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js | 203.47099995706 | 209.97499994701 | 34699 | 97163 | 200 | text/javascript | Script |
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| https://www.google-analytics.com/analytics.js | 387.26799999131 | 391.51899999706 | 19102 | 45892 | 200 | text/javascript | Script |
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| https://i.stack.imgur.com/AnaDf.jpg?s=32 | 1029.5489999698 | 1107.9809999792 | 2480 | 1656 | 200 | image/jpeg | Image |
| https://clc.stackoverflow.com/impression.gif?an=4xLiOHrvB9MND8VI7uBQLkaB1DD-d8dmJ5pmM370uxNwIpBBkqFnAwNDgz0jIwOTNFPjGoEr60Q7FsoBxVMOTFtXblm7Ya-dNNOWxaIfmmVWfFEBixv6RFm6dEy1Y9jPbFDIsp4n7cQHAA&md=120 | 1029.8009999678 | 1106.1329999939 | 625 | 43 | 200 | image/gif | Image |
| https://pagead2.googlesyndication.com/pagead/gen_204?id=sodar2&v=209&t=2&li=gpt_2020052101&jk=3928897406992537&bg=!i4iliJBY_OOr-kp9_eYCAAABHFIAAAA7mQGK3fd9VNXmaDePbUh1ADap1UvGEHvXHhkkp6PbU9tvohIMBZ_2QLVvWjC3zXpNs8YDr90wSBE9DqDG0LinrQLBi1GxuA9D6RUzeI0Vbn_NsAITKRUlVdPNT6cPXv-FS3P7D5i4hhdXQU4EUanPVg_fTkeLPaaZP3w5Q30oUFiQuRTqAjO8gWH_hiTgFn3EESQnOR7d9m1skVwkGuBhyieVuq5sVBXvQPJi-qvPbN5TXOTBtEoGhU4GnubLAsg8QiOEMIFrGKNbBHK8rAe7XSjcUY4WZuAuIAW-hnqGhe5ZuDTQDULMtyXrSZj2RSQK1FAihCp8ae7n_5Ltad6HiQVXRcgmAIMY4THhSfK7OhLuBPxUmz-4ktqMZJcHOg06V4PG5eNRIcAH3U52IjzdFqsZgr8fwqeIiPKqlKU2QUNBPQAK3IC9XVAcrH8Zlw1vH63WwXOP8gIaPDFkjPmKXwRZDSYbZOS4hZTuAhdMq9stP5M5DspzvVeVVSW9L2poIi8wbnVi9oiYlVPahg | 1343.9169999911 | 1396.1269999854 | 1163 | 0 | 204 | image/gif | Image |
Network Round Trip Times — 0 ms High Network RTT (Round Trip Times) can have a large impact on performance. Providing servers geographically closer to the user could improve performance.
Server Backend Latencies — 0 ms High server latencies indicate the server is overloaded or has a poor backend performance.
Tasks Below is a list of the top-level main thread tasks that executed during page load.
| Start Time (Ms) | End Time (Ms) |
|---|---|
| 226.702 | 8.129 |
| 254.304 | 23.183 |
| 310.687 | 22.84 |
| 333.538 | 7.417 |
| 347.945 | 6.213 |
| 356.271 | 52.028 |
| 408.496 | 6.779 |
| 423.26 | 29.491 |
| 456.098 | 13.2 |
| 477.112 | 5.65 |
| 482.79 | 25.177 |
| 510.463 | 5.996 |
| 520.974 | 133.122 |
| 669.003 | 10.378 |
| 680.228 | 39.285 |
| 723.813 | 90.494 |
| 820.425 | 5.248 |
| 914.197 | 14.142 |
| 928.407 | 7.23 |
| 940.616 | 5.167 |
| 954.743 | 8.214 |
| 971.105 | 10.699 |
| 1006.593 | 20.603 |
| 1028.449 | 11.664 |
| 1040.9 | 11.71 |
| 1053.874 | 14.577 |
| 1068.475 | 15.092 |
| 1083.806 | 12.015 |
| 1098.62 | 51.868 |
| 1153.78 | 12.287 |
| 1166.279 | 7.15 |
| 1174.686 | 12.959 |
| 1187.665 | 7.152 |
| 1195.029 | 8.805 |
| 1207.58 | 13.552 |
| 1226.353 | 13.792 |
| 1246.29 | 7.952 |
| 1255.269 | 11.797 |
| 1268.059 | 11.309 |
| 1280.294 | 15.636 |
| 1296.912 | 12.337 |
| 1310.254 | 8.925 |
| 1322.942 | 12.011 |
| 1335.855 | 32.02 |
| 1368.787 | 8.559 |
| 2169.099 | 5.523 |
Opportunities
Properly size images Images can slow down the page's load time. Askubuntu.com should consider serving more appropriate-sized images.
Defer offscreen images Time to Interactive can be slowed down by resources on the page. Askubuntu.com should consider lazy-loading offscreen and hidden images.
Minify CSS Cascading Style Sheets (CSS) files can contribute to network payload sizes. Askubuntu.com should consider minifying CSS files.
Minify JavaScript JavaScript (JS) files can contribute to network payload sizes and increase script parse times. Askubuntu.com should consider minifying JS files.
Remove unused CSS — Potential savings of 117 KB Dead and/or unused rules in Style Sheets (CSS) can contribute to network payload sizes. Askubuntu.com should consider removing dead rules from style sheets and deferring the loading of CSS not used for above-the-fold content.
| URL | Transfer Size (Bytes) | Potential Savings (Bytes) |
|---|---|---|
| html,body,div,span,applet,object,iframe,h1,h2,h3,h4,h5,h6,p,blockquote,pre,a,abbr,acronym,address,bi... | 66115 | 66115 |
| https://cdn.sstatic.net/Sites/askubuntu/primary.css?v=dde981bace7b | 56391 | 53482 |
Efficiently encode images Unoptimized images can consume more cellular data than what is necessary.
Serve images in next-gen formats — Potential savings of 20 KB Image formats like PNG and JPEG have poor compression when compared to other next-gen formats, such as JPEG 200, JPEG XR and WebP.
| URL | Resource Size (Bytes) | Potential Savings (Bytes) |
|---|---|---|
| https://cdn.sstatic.net/Img/favicons-sprite16.png?v=0a677f39f988 | 79826 | 20666 |
Enable text compression Text-based resources should be served with compression, such as gzip, deflate or brotli.
Preconnect to required origins Resource hints, such as 'preconnect' or 'dns-prefetch', may assist in establishing early connections to important third-party origins.
Initial server response time was short — Root document took 130 ms It is advised to keep the server response time short for the main document, because all other requests depend on it.
Avoid multiple page redirects — Potential savings of 190 ms Redirects can cause additional delays before the page can begin loading. Askubuntu.com should avoid multiple or unnecessary page redirects.
| URL | Time Spent (Ms) |
|---|---|
| (Start) http://askubuntu.com/ | 0 |
| https://askubuntu.com/ | 190 |
Preload key requests Key requests can be preloaded by using '<link rel=preload>'. Askubuntu.com should consider using '<link rel=preload>' to prioritize fetching resources that are currently requested later in page load.
Use video formats for animated content Large GIFs are inefficient for delivering animated content. It is recommended to use MPEG4/WebM videos for animations and PNG/WebP for static images instead of GIF.
Diagnostics
Avoids enormous network payloads — Total size was 536 KB Large network payloads can cost users money and are linked to long load times.
| URL | Transfer Size (Bytes) |
|---|---|
| https://securepubads.g.doubleclick.net/gpt/pubads_impl_2020052101.js | 91503 |
| https://cdn.sstatic.net/Img/favicons-sprite16.png?v=0a677f39f988 | 80236 |
| https://cdn.sstatic.net/Js/full-anon.en.js?v=c953cd518ec3 | 74235 |
| https://cdn.sstatic.net/Sites/askubuntu/primary.css?v=dde981bace7b | 56391 |
| https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js | 34699 |
| https://askubuntu.com/ | 28832 |
| https://fonts.gstatic.com/s/robotoslab/v11/BngbUXZYTXPIvIBgJJSb6s3BzlRRfKOFbvjoa4Omb2Rm.ttf | 24160 |
| https://fonts.gstatic.com/s/robotoslab/v11/BngbUXZYTXPIvIBgJJSb6s3BzlRRfKOFbvjojISmb2Rm.ttf | 24135 |
| https://www.google-analytics.com/analytics.js | 19102 |
| https://cdn.sstatic.net/Js/stub.en.js?v=15d6a0a5a8bb | 16570 |
Avoid chaining critical requests — 4 chains found Below is a list of Critical Request Chains, which shows which resources are loaded with a high priority. Askubuntu.com should consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.
User Timing marks and measures Make use of the User Timing API to measure an app's real-world performance during key user experiences.
JavaScript execution time — 0.5 s JavaScript (JS) execution time can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
| URL | Total CPU Time (Ms) | Script Evaluation (Ms) | Script Parse (Ms) |
|---|---|---|---|
| https://askubuntu.com/ | 272.183 | 12.856 | 4.105 |
| https://tpc.googlesyndication.com/sodar/sodar2/209/runner.html | 250.011 | 225.785 | 3.205 |
| https://securepubads.g.doubleclick.net/gpt/pubads_impl_2020052101.js | 111.89 | 97.894 | 6.186 |
| https://cdn.sstatic.net/Js/stub.en.js?v=15d6a0a5a8bb | 100.946 | 93.087 | 0.883 |
| Unattributable | 59.765 | 1.7 | 0.193 |
| https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js | 51.493 | 36.214 | 1.636 |
Minimizes main-thread work — 1.0 s Main-thread work timing can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
| Category | Time Spent (Ms) |
|---|---|
| Script Evaluation | 599.556 |
| Style & Layout | 154.63 |
| Other | 107.41 |
| Rendering | 79.634 |
| Parse HTML & CSS | 35.067 |
| Script Parsing & Compilation | 30.704 |
| Garbage Collection | 6.164 |
All text remains visible during webfont loads Make use of the font-display CSS feature, which will ensure text is user-visible while webfonts are loading.
Keep request counts low and transfer sizes small — 43 requests • 536 KB It is advised to add a budgets.json file in order to set budgets for the quantity and size of page resources.
| Resource Type | Requests | Transfer Size (Bytes) |
|---|---|---|
| Total | 43 | 549315 |
| Script | 15 | 290365 |
| Image | 13 | 94736 |
| Stylesheet | 3 | 63864 |
| Font | 2 | 48295 |
| Document | 2 | 35197 |
| Other | 8 | 16858 |
| Media | 0 | 0 |
| Third-party | 40 | 519773 |
Minimize third-party usage — Third-party code blocked the main thread for 70 ms It is advised to either limit, remove or delay the loading of redundant third-party code which may be significantly impacting load performance.
| Third-Party | Transfer Size (Bytes) | Main-Thread Blocking Time (Ms) |
|---|---|---|
| 246632 | 37.828 | |
| 144619 | 29.875 | |
| 48295 | 0 | |
| 34699 | 0 | |
| 19102 | 0 | |
| 9479 | 0 | |
| 5717 | 0 | |
| 2338 | 0 |
Largest Contentful Paint element — 1 element found The element which was identified as the Largest Contentful Paint.
| Element |
|---|
Avoid large layout shifts — No elements found Below is a list of all DOM elements that contribute to the CLS of the page.
Uses passive listeners to improve scrolling performance Improve the page's scroll performance by marking touch and wheel event listeners as 'passive'.
Avoids `document.write()` Avoid or limit the use of external scripts that are dynamically injected via 'document.write()' as users on slow connections will be delayed by tens of seconds.
Budgets
Performance budget It is advised to keep the quantity and size of all network requests under the targets set by the provided performance budget.
Timing budget It is advised to set a timing budget to monitor the performance of your site.
Opportunities
Eliminate render-blocking resources — Potential savings of 140 ms Resources, such as JavaScript and style sheets, can block the first paint of the page. Askubuntu.com should consider delivering critical JavaScript/style sheets (JS/CSS) inline and deferring all non-critical JS/CSS.
| URL | Transfer Size (Bytes) | Potential Savings (Ms) |
|---|---|---|
| https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js | 34699 | 310 |
| https://cdn.sstatic.net/Js/stub.en.js?v=15d6a0a5a8bb | 16570 | 270 |
| https://cdn.sstatic.net/Sites/askubuntu/primary.css?v=dde981bace7b | 56391 | 350 |
Remove unused JavaScript — Potential savings of 152 KB It is advised to remove unused JavaScript in order to reduce bytes consumed by network activity.
| URL | Transfer Size (Bytes) | Potential Savings (Bytes) |
|---|---|---|
| https://cdn.sstatic.net/Js/full-anon.en.js?v=c953cd518ec3 | 74235 | 54392 |
| https://securepubads.g.doubleclick.net/gpt/pubads_impl_2020052101.js | 91503 | 50999 |
| https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js | 34699 | 17056 |
| https://cdn.sstatic.net/Js/stub.en.js?v=15d6a0a5a8bb | 16570 | 11927 |
| https://www.google-analytics.com/analytics.js | 19102 | 6961 |
| https://www.googletagservices.com/tag/js/gpt.js | 15825 | 3841 |
| https://secure.quantserve.com/quant.js | 8427 | 3057 |
| https://tpc.googlesyndication.com/sodar/sodar2/209/runner.html | 6341 | 2965 |
| https://tpc.googlesyndication.com/sodar/sodar2.js | 6199 | 2720 |
| https://cdn.sstatic.net/clc/clc.min.js?v=d86ede4e666e | 4489 | 2070 |
Diagnostics
Serve static assets with an efficient cache policy — 14 resources found Askubuntu.com can speed up repeat visits by increasing the cache lifetime, which is essentially how long before a cached copy expires.
| URL | Cache TTL (Ms) | Transfer Size (Bytes) |
|---|---|---|
| https://www.google-analytics.com/analytics.js | 7200000 | 19102 |
| https://rules.quantcount.com/rules-p-c1rF4kxgLUzNc.js | 86400000 | 508 |
| https://cdn.sstatic.net/Img/favicons-sprite16.png?v=0a677f39f988 | 604800000 | 80236 |
| https://cdn.sstatic.net/Js/full-anon.en.js?v=c953cd518ec3 | 604800000 | 74235 |
| https://cdn.sstatic.net/Sites/askubuntu/primary.css?v=dde981bace7b | 604800000 | 56391 |
| https://cdn.sstatic.net/Js/stub.en.js?v=15d6a0a5a8bb | 604800000 | 16570 |
| https://cdn.sstatic.net/clc/styles/clc.min.css?v=ac5522400b2d | 604800000 | 7473 |
| https://cdn.sstatic.net/clc/clc.min.js?v=d86ede4e666e | 604800000 | 4489 |
| https://cdn.sstatic.net/Img/hero/anonymousHeroBackground.svg?v=b7f6054406b5 | 604800000 | 2074 |
| https://cdn.sstatic.net/Sites/askubuntu/img/site-background-image.png?v=29bccd27864c | 604800000 | 1347 |
| https://cdn.sstatic.net/Js/explore-qlist.en.js?v=8498d0bb288b | 604800000 | 1315 |
| https://cdn.sstatic.net/Img/hero/anonymousHeroAnswers.svg?v=d5348b00eddc | 604800000 | 924 |
| https://cdn.sstatic.net/Img/hero/anonymousHeroUpvote.svg?v=af2bb70d5d1b | 604800000 | 818 |
| https://cdn.sstatic.net/Img/hero/anonymousHeroQuestions.svg?v=748bfb046b78 | 604800000 | 760 |
Avoid an excessive DOM size — 1,109 elements A large DOM (Document Object Model) will increase memory usage, cause longer system calculations as well as costly layout reflows.
| Statistic | Element | Value |
|---|---|---|
| Total DOM Elements | 1,109 | |
| Maximum DOM Depth | 15 | |
| Maximum Child Elements | 24 |
Accessibility
Indicates how accessible the page is and highlights opportunities where the page can be made more accessible to users of askubuntu.com. This includes details about various page attributes that can be optimized.Navigation
`[accesskey]` values are unique Access keys assist users with focusing on different parts of the page. Each access key should be unique for proper navigation.
The page contains a heading, skip link, or landmark region It is advised to provide ways to bypass repetitive content, allowing users to navigate the page efficiently.
`[id]` attributes on active, focusable elements are unique Ensure all focusable elements have a unique id value to allow them to be visible to users of assistive technologies, like a screen reader.
No element has a `[tabindex]` value greater than 0 Although technically valid, a tabindex value greater than 0 often creates frustrating experiences for users who rely on assistive technologies.
ARIA
`[aria-*]` attributes match their roles Avoid mismatching 'aria-*' attributes and their 'role' value, as it invalidates the attribute.
`[aria-hidden="true"]` is not present on the document `<body>` If aria-hidden=true is set on the document body, assistive technologies, like a screen reader will work inconsistently.
`[aria-hidden="true"]` elements do not contain focusable descendents Interactive elements within an aria-hidden=true element are unavailable to users of assistive technologies, like a screen reader.
ARIA input fields have accessible names Generic names are announced to users of assistive technologies, like a screen reader, when an input field does not have an accessible name specified.
`[role]`s have all required `[aria-*]` attributes Some ARIA roles have required 'aria-*' attributes, which provide essential information about state and functionality.
`[role]`s are contained by their required parent element Some ARIA child roles cannot perform their intended functions if specific parent roles are not used.
`[role]` values are valid All ARIA roles require valid values to perform their intended functions.
ARIA toggle fields have accessible names Generic names are announced to users of assistive technologies, like a screen reader, when a toggle field does not have an accessible name specified.
`[aria-*]` attributes have valid values ARIA attributes cannot be interpreted with invalid values when used by screen readers and other assistive technologies.
`[aria-*]` attributes are valid and not misspelled ARIA attributes cannot be interpreted with invalid names when used by screen readers and other assistive technologies.
ARIA IDs are unique Ensure all ARIA ID values are unique to prevent elements from being overlooked by assistive technologies, like a screen reader.
Tables and lists
`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements. Screen readers and other assistive technologies may produce poor and inaccurate output when definition lists are not properly marked up.
Definition list items are wrapped in `<dl>` elements In order for screen readers and other assistive technologies to properly announce definition list items ('<dt>' and '<dd>'), they must be wrapped in parent a '<dl>' element.
Presentational `<table>` elements avoid using `<th>`, `<caption>` or the `[summary]` attribute. It is advised to not include data elements in tables which are used for layout purposes, as it may create confusion for screen reader and other assistive technology users.
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`). Use proper list structure to aid screen readers and other assistive technologies.
Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table. Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that '<td>' cells using the headers attribute only refer to other cells in the same table, to improve screen reader user experience.
`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe. Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that table headers refer to some set of cells, to improve screen reader user experience.
Names and labels
Document has a `<title>` element Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
No form fields have multiple labels Having multiple labels for form fields can be confusing to assistive technologies, like a screen reader.
`<frame>` or `<iframe>` elements have a title Screen reader users and other assistive technology users rely on frame titles to describe the contents of frames.
`<input type="image">` elements have `[alt]` text Input buttons with alternative text assist screen readers and other assistive technology users to understand its purpose.
Form elements have associated labels Screen readers and other assistive technologies rely on labels to properly announce form controls.
`<object>` elements have `[alt]` text It is advised that alt text is used on '<object>' elements in order to provide meaning to screen reader and other assistive technology users, as these technologies are unable to translate non-text content.
Internationalization and localization
`<html>` element has a valid value for its `[lang]` attribute Specify a valid BCP 47 language in order to help screen readers and other assistive technologies announce text properly.
`[lang]` attributes have a valid value Specify a valid BCP 47 language on elements in order to help screen readers and other assistive technologies announce text properly.
Best practices
The document does not use `<meta http-equiv="refresh">` Pages that refresh automatically cause a poor user experience as focus is directed back to the top of the page unexpectedly.
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5. For users with low vision who rely on screen magnification, ensure that zooming is not disabled.
Audio and video
`<video>` elements contain a `<track>` element with `[kind="captions"]` Askubuntu.com may provide assistance to deaf or hearing-impaired users with captions on videos.
`<video>` elements contain a `<track>` element with `[kind="description"]` Askubuntu.com may provide relevant information that dialogue cannot, by using audio descriptions.
ARIA
Elements with an ARIA `[role]` that require children to contain a specific `[role]` are missing some or all of those required children. Some ARIA parent roles cannot perform their intended functions if specific child roles are not used.
| Failing Elements |
|---|
Names and labels
Buttons do not have an accessible name Buttons become unusable as they are announced simply as "button" when the button does not have an accessible name, when used by screen readers and other assistive technologies.
| Failing Elements |
|---|
Image elements do not have `[alt]` attributes Provide short and descriptive alternative text where possible on informative elements.
| Failing Elements |
|---|
Links do not have a discernible name In order to improve the navigation for screen reader and other assistive technology users, use link text that is unique, focusable and discernible.
| Failing Elements |
|---|
Contrast
Background and foreground colors do not have a sufficient contrast ratio. Many (if not most) users find low-contrast text difficult or impossible to read.
| Failing Elements |
|---|
Navigation
Heading elements are not in a sequentially-descending order Properly order all headers and do not skip heading levels to better the navigation and readability for users of assistive technologies, like a screen reader.
| Failing Elements |
|---|
Internationalization and localization
`<html>` element does not have a `[lang]` attribute It is advised to provide a lang attribute so that screen readers and other assistive technologies are guaranteed to announce the page's text correctly. When not provided, the user's default language setting will be used which may cause inaccuracies.
| Failing Elements |
|---|
Tables and lists
List items (`<li>`) are not contained within `<ul>` or `<ol>` parent elements. In order for screen readers to announce list items, ensure that list items ('<li>') are contained within parent '<ul>' or '<ol>' tags.
| Failing Elements |
|---|
Manual Checks
The page has a logical tab order The visual layout should be logical in its tab order and users cannot focus elements that are offscreen.
Interactive controls are keyboard focusable Ensure that custom interactive controls are keyboard focusable and that a focus indicator is displayed.
Interactive elements indicate their purpose and state Ensure that interactive elements (such as links and buttons) are distinguishable from non-interactive elements and that they indicate their state.
The user's focus is directed to new content added to the page When new content (such as a dialogue) is added to the page, the user's focus should be directed to it.
User focus is not accidentally trapped in a region Avoid focus being accidentally trapped when a user tabs in and out of controls or regions on page.
Custom controls have associated labels Ensure that custom interactive controls have associated labels, which are provided by aria-label and aria-labelledby attributes.
Custom controls have ARIA roles Ensure that all custom interactive controls have appropriate ARIA roles.
Visual order on the page follows DOM order Ensure that the DOM order matches with the page's visual order, in order to improve navigation for screen readers and other assistive technologies.
Offscreen content is hidden from assistive technology Ensure that offscreen content is hidden through the use of "display:none" styling or the aria-hidden attribute.
HTML5 landmark elements are used to improve navigation Elements such as <main> and <nav> are recommended as they are used by screen readers and other assistive technologies to improve keyboard navigation.
Best Practices
Indicates the recommended, best practices currently in place on the page and highlights the best practices that askubuntu.com should incorporate. This includes practices such as protecting pages with HTTPS.Audits
Avoids requesting the geolocation permission on page load When requesting a user's location, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.
Avoids requesting the notification permission on page load When requesting permission to send notifications, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.
Audits
Allows users to paste into password fields Ensure that password inputs may be pasted into to aid in the user's ability to use password managers and improve security.
Displays images with correct aspect ratio Ensure that image display dimensions match their natural aspect ratio.
Displays images with appropriate size For maximum image clarity, ensure images have natural dimensions and are proportional to the display size and pixel ratio.
Audits
Page has the HTML doctype Ensure a doctype is specified to prevent the browser from switching to quirks-mode.
Properly defines charset It is advised to declare a character encoding, optionally via a <meta> tag in the first 1024 bytes of the HTML or in the Content-Type HTTP response header.
Audits
Avoids Application Cache Application cache is deprecated and is no longer recommended.
Detected JavaScript libraries Below is a list of all front-end JavaScript libraries that were detected on the page.
| Name | Version |
|---|---|
| jQuery | 1.12.4 |
Avoids deprecated APIs Avoid deprecated APIs which will eventually be removed the browser.
Audits
Does not use HTTPS — 1 insecure request found Ensure that all pages are protected with HTTPS (including those that do not handle sensitive data) as HTTPS prevents tampering and passive listening on communications between the app and its users. Additionally, HTTPS is a prerequisite for HTTP/2 and many new web platform APIs.
| Insecure URL |
|---|
| http://askubuntu.com/ |
Links to cross-origin destinations are unsafe Improve performance and prevent security vulnerabilities by adding rel="noopener" and rel="noreferrer" to external links.
| Failing Anchors |
|---|
Includes front-end JavaScript libraries with known security vulnerabilities — 4 vulnerabilities detected Ensure that the use of third-party scripts is minimal and that only trusted third-party scripts are used as some may contain known security vulnerabilities which may be exploited by attackers.
| Library Version | Vulnerability Count | Highest Severity |
|---|---|---|
| 4 | Medium |
Audits
Browser errors were logged to the console Below is a list of all errors logged to the console, which indicate unresolved problems on the site.
| URL | Description |
|---|---|
| https://www.google-analytics.com/r/collect | Failed to load resource: net::ERR_BLOCKED_BY_CLIENT.Inspector |
| https://askubuntu.com/gps/event | Failed to load resource: net::ERR_BLOCKED_BY_CLIENT.Inspector |
| https://cdn.sstatic.net/Shared/stacks.css?v=b3fb80b2a709 | Failed to load resource: net::ERR_CONNECTION_FAILED |
| https://cdn.sstatic.net/Sites/askubuntu/Img/logo.svg?v=a83024ffc000 | Failed to load resource: net::ERR_CONNECTION_FAILED |
| https://cdn.sstatic.net/Js/full-anon.en.js?v=c953cd518ec3 | WebSocket connection to 'wss://qa.sockets.stackexchange.com/' failed: Error in connection establishment: net::ERR_NAME_NOT_RESOLVED |
| https://cdn.sstatic.net/Js/full-anon.en.js?v=c953cd518ec3 | WebSocket connection to 'wss://qa.sockets.stackexchange.com/' failed: Error in connection establishment: net::ERR_NAME_NOT_RESOLVED |
SEO
Indicates how well the page is optimized for ranking in search engines and highlights Search Engine Optimization (SEO) opportunities for askubuntu.com. This includes optimizations such as providing meta data.Mobile Friendly
Has a `<meta name="viewport">` tag with `width` or `initial-scale` It is advised to use a '<meta name="viewport">' tag for the optimization of askubuntu.com on mobile screens.
Document uses legible font sizes Font sizes of 12px or less are too small to most mobile users without user gestures and further action. Aim for more than 60% of page text to use font sizes greater than 12px.
Tap targets are sized appropriately Interactive elements (such as buttons and links) should be appropriately spaced, sized and easy enough to select or tap with regard to their surrounding elements.
Content Best Practices
Document has a `<title>` element Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
Document has a meta description Meta descriptions may be used by search engines when displaying a link to the page and should concisely summarize the page's content.
Links have descriptive text Make use of descriptive link text to assist search engines in understanding the content.
Document has a valid `hreflang` Search engines can be instructed to list specific versions of a page for a given language or region through the use of hreflang links.
Document has a valid `rel=canonical` Search engines can be suggested which URL should be shown in search results through the use of canonical links.
Document avoids plugins The content of plugins cannot be indexed by search engines and many devices either restrict or do not support them.
Crawling and Indexing
Page has successful HTTP status code Avoid pages with unsuccessful HTTP status codes as they may not be indexed by search engines.
Page isn’t blocked from indexing Pages that cannot be crawled by search engines cannot be indexed or included in their search results. Ensure that search engines have permission to crawl all pages that should be indexed.
robots.txt is valid Malformed robots.txt files prevent crawlers from understanding how a site wants to be crawled or indexed, which can be devastating to SEO.
Content Best Practices
Manual Checks
Structured data is valid Structured data can be validated through the use of the Structured Data Testing Tool and the Structured Data Linter.
Progressive Web App
Indicates how valid the aspects of a Progressive Web App (PWA) are for the page and highlights opportunities to enable/improve the PWA of askubuntu.com. This includes details about web app manifests.Fast and reliable
Page load is fast enough on mobile networks Ensure that the page loads fast enough over a cellular network, to ensure good mobile user experience.
PWA Optimized
Redirects HTTP traffic to HTTPS It is advised to redirect all HTTP traffic to HTTPS, in order to enable secure web features for all users.
Content is sized correctly for the viewport Ensure that the width of the app's content matches the width of the viewport, otherwise the app might not be optimized for mobile screens.
Has a `<meta name="viewport">` tag with `width` or `initial-scale` It is advised to use a '<meta name="viewport">' tag for the optimization of askubuntu.com on mobile screens.
Contains some content when JavaScript is not available Apps should display alternative content for when JavaScript is disabled.
Provides a valid `apple-touch-icon` iOS users of Progressive Web Apps will benefit from an apple touch icon, which can be defined with 'apple-touch-icon', which must point to a non-transparent 192px (or 180px) square PNG.
Fast and reliable
Current page does not respond with a 200 when offline In order for Progressive Web Apps to be made available offline, ensure that the app is using a service worker.
`start_url` does not respond with a 200 when offline Consider using a service worker for Progressive Web Apps to ensure greater reliability for the user, in the case of poor network conditions.
Installable
Does not use HTTPS — 1 insecure request found Ensure that all pages are protected with HTTPS (including those that do not handle sensitive data) as HTTPS prevents tampering and passive listening on communications between the app and its users. Additionally, HTTPS is a prerequisite for HTTP/2 and many new web platform APIs.
| Insecure URL |
|---|
| http://askubuntu.com/ |
Does not register a service worker that controls page and `start_url` A service worker is used to provide Progressive Web Apps the use of features such as working offline, the ability for the app to be added to the homescreen as well as push notifications.
Web app manifest does not meet the installability requirements User engagement may be increased by leveraging the browsers ability to proactively prompt users to add the app to their homescreen.
View Data
PWA Optimized
Is not configured for a custom splash screen Themed splash screens ensure a high-quality user experience at launch for app users.
View Data
Does not set a theme color for the address bar. A theme may be applied to the browser address bar, which ideally can be made to match the site.
View Data
Manifest doesn't have a maskable icon Maskable icons are great to ensure that images fill the entire shape when installing the app on a device.
Manual Checks
Site works cross-browser Ensure that the Progressive Web App works correctly across every major browser.
Page transitions don't feel like they block on the network Users perceive apps with responsive, snappy transitions as higher peforming and ensures a great user experience, even on a slow network.
Each page has a URL Ensure that all pages are deep linkable via URL. They should also be unique for the purpose of shareability on social media.
Avg. (All Categories)
Performance
Accessibility
Best Practices
SEO
Progressive Web App
0–49 (Fail) 50–89 (Average) 90–100 (Pass)
URL: https://askubuntu.com/
Updated: 28th May, 2020
1.37 seconds
First Contentful Paint (FCP)
0.02 seconds
First Input Delay (FID) Simulate loading on mobile
Performance
Indicates how well the page is performing and highlights opportunities where performance may be improved for askubuntu.com. This includes details about optimizing page load times which can result in a better user experience.Metrics
Speed Index — 2.6 s The time taken for the page contents to be visibly populated.
Total Blocking Time — 110 ms The total blocking time is the sum of all time periods between First Contentful Paint and Time to Interactive (when task length exceeded 50ms).
Cumulative Layout Shift — 0 Cumulative Layout Shift is the measurement of visible elements collective movement within the viewport.
View Data
Other
Max Potential First Input Delay — 130 ms Users could experience a delay when interacting with the page.
Estimated Input Latency — 10 ms The time taken for the page to respond to user input (during the busiest 5 second window of page load). Users are likely to perceive askubuntu.com as laggy when the latency is higher than 0.05 seconds.
Network Requests Below is a list of network requests that were made during page load.
| URL | Start Time (Ms) | End Time (Ms) | Transfer Size (Bytes) | Resource Size (Bytes) | Status Code | MIME Type | Resource Type |
|---|---|---|---|---|---|---|---|
| http://askubuntu.com/ | 0 | 46.130000002449 | 710 | 0 | 301 | ||
| https://askubuntu.com/ | 46.47699999623 | 87.427999998908 | 14095 | 93806 | 200 | text/html | Document |
| https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js | 104.27499999787 | 110.09899999772 | 34699 | 97163 | 200 | text/javascript | Script |
| https://cdn.sstatic.net/Js/stub.en.js?v=15d6a0a5a8bb | 104.60600000079 | 120.5839999966 | 16570 | 47252 | 200 | application/javascript | Script |
| https://cdn.sstatic.net/Js/mobile.en.js?v=a168d277c579 | 104.80599999573 | 159.65999999753 | 4204 | 10367 | 200 | application/javascript | Script |
| https://cdn.sstatic.net/Shared/stacks.css?v=b3fb80b2a709 | 104.99700000219 | 188.62200000149 | 30700 | 282142 | 200 | text/css | Stylesheet |
| https://cdn.sstatic.net/Sites/askubuntu/mobile.css?v=d92d4af65e3e | 105.19000000204 | 182.99200000183 | 35862 | 180018 | 200 | text/css | Stylesheet |
| 237.21900000237 | 237.29900000035 | 0 | 1722 | 200 | image/svg+xml | Image | |
| 268.68300000206 | 268.73799999885 | 0 | 529 | 200 | image/svg+xml | Image | |
| 271.12199999829 | 271.16699999897 | 0 | 169 | 200 | image/svg+xml | Image | |
| 276.61899999657 | 276.6599999959 | 0 | 503 | 200 | image/svg+xml | Image | |
| 280.69400000095 | 280.73399999994 | 0 | 507 | 200 | image/svg+xml | Image | |
| https://www.google-analytics.com/analytics.js | 362.60500000208 | 369.67300000106 | 19103 | 45892 | 200 | text/javascript | Script |
| https://secure.quantserve.com/quant.js | 363.18600000232 | 464.96900000056 | 8427 | 21997 | 200 | application/x-javascript | Script |
| https://sb.scorecardresearch.com/beacon.js | 363.50200000015 | 380.95600000088 | 2306 | 3691 | 200 | application/x-javascript | Script |
| https://cdn.sstatic.net/Js/full-anon.en.js?v=c953cd518ec3 | 374.66799999675 | 441.85599999764 | 74235 | 247837 | 200 | application/javascript | Script |
| https://sb.scorecardresearch.com/b?c1=2&c2=17440561&ns__t=1590664732372&ns_c=UTF-8&cv=3.5m&c8=Ask%20Ubuntu&c7=https%3A%2F%2Faskubuntu.com%2F&c9= | 390.19299999927 | 406.86899999855 | 646 | 0 | 302 | ||
| https://sb.scorecardresearch.com/b2?c1=2&c2=17440561&ns__t=1590664732372&ns_c=UTF-8&cv=3.5m&c8=Ask%20Ubuntu&c7=https%3A%2F%2Faskubuntu.com%2F&c9=&cs_ak_ss=1 | 407.08900000027 | 423.29800000152 | 528 | 0 | 204 | text/plain | Image |
| https://www.google-analytics.com/r/collect | 511.7390000014 | 524.5419999992 | 0 | 0 | -1 | Other | |
| https://rules.quantcount.com/rules-p-c1rF4kxgLUzNc.js | 533.24900000007 | 548.59099999885 | 508 | 3 | 200 | application/x-javascript | Script |
| https://pixel.quantserve.com/pixel;r=1022394517;rf=0;a=p-c1rF4kxgLUzNc;url=https%3A%2F%2Faskubuntu.com%2F;fpan=1;fpa=P0-1182892863-1590664732535;ns=0;ce=1;qjs=1;qv=f473609d-20200430082408;cm=;gdpr=0;ref=;je=0;sr=360x640x24;enc=n;dst=1;et=1590664732534;tzo=420;ogl= | 554.73099999654 | 648.91799999896 | 544 | 35 | 200 | image/gif | Image |
Network Round Trip Times — 0 ms High Network RTT (Round Trip Times) can have a large impact on performance. Providing servers geographically closer to the user could improve performance.
Server Backend Latencies — 0 ms High server latencies indicate the server is overloaded or has a poor backend performance.
Tasks Below is a list of the top-level main thread tasks that executed during page load.
| Start Time (Ms) | End Time (Ms) |
|---|---|
| 120.373 | 8.907 |
| 147.388 | 28.08 |
| 214.818 | 8.292 |
| 224.188 | 14 |
| 238.224 | 8.847 |
| 247.084 | 43.417 |
| 290.585 | 5.872 |
| 296.77 | 94.852 |
| 391.764 | 17.721 |
| 421.138 | 8.808 |
| 485.641 | 64.065 |
| 556.223 | 8.002 |
| 580.344 | 5.011 |
Opportunities
Properly size images Images can slow down the page's load time. Askubuntu.com should consider serving more appropriate-sized images.
Defer offscreen images Time to Interactive can be slowed down by resources on the page. Askubuntu.com should consider lazy-loading offscreen and hidden images.
Minify CSS Cascading Style Sheets (CSS) files can contribute to network payload sizes. Askubuntu.com should consider minifying CSS files.
Minify JavaScript JavaScript (JS) files can contribute to network payload sizes and increase script parse times. Askubuntu.com should consider minifying JS files.
Efficiently encode images Unoptimized images can consume more cellular data than what is necessary.
Serve images in next-gen formats Image formats like PNG and JPEG have poor compression when compared to other next-gen formats, such as JPEG 200, JPEG XR and WebP.
Enable text compression Text-based resources should be served with compression, such as gzip, deflate or brotli.
Preconnect to required origins Resource hints, such as 'preconnect' or 'dns-prefetch', may assist in establishing early connections to important third-party origins.
Initial server response time was short — Root document took 40 ms It is advised to keep the server response time short for the main document, because all other requests depend on it.
Avoid multiple page redirects — Potential savings of 630 ms Redirects can cause additional delays before the page can begin loading. Askubuntu.com should avoid multiple or unnecessary page redirects.
| URL | Time Spent (Ms) |
|---|---|
| (Start) http://askubuntu.com/ | 0 |
| https://askubuntu.com/ | 630 |
Preload key requests Key requests can be preloaded by using '<link rel=preload>'. Askubuntu.com should consider using '<link rel=preload>' to prioritize fetching resources that are currently requested later in page load.
Use video formats for animated content Large GIFs are inefficient for delivering animated content. It is recommended to use MPEG4/WebM videos for animations and PNG/WebP for static images instead of GIF.
Diagnostics
Avoids enormous network payloads — Total size was 237 KB Large network payloads can cost users money and are linked to long load times.
| URL | Transfer Size (Bytes) |
|---|---|
| https://cdn.sstatic.net/Js/full-anon.en.js?v=c953cd518ec3 | 74235 |
| https://cdn.sstatic.net/Sites/askubuntu/mobile.css?v=d92d4af65e3e | 35862 |
| https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js | 34699 |
| https://cdn.sstatic.net/Shared/stacks.css?v=b3fb80b2a709 | 30700 |
| https://www.google-analytics.com/analytics.js | 19103 |
| https://cdn.sstatic.net/Js/stub.en.js?v=15d6a0a5a8bb | 16570 |
| https://askubuntu.com/ | 14095 |
| https://secure.quantserve.com/quant.js | 8427 |
| https://cdn.sstatic.net/Js/mobile.en.js?v=a168d277c579 | 4204 |
| https://sb.scorecardresearch.com/beacon.js | 2306 |
Avoid chaining critical requests — 5 chains found Below is a list of Critical Request Chains, which shows which resources are loaded with a high priority. Askubuntu.com should consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.
User Timing marks and measures Make use of the User Timing API to measure an app's real-world performance during key user experiences.
JavaScript execution time — 0.5 s JavaScript (JS) execution time can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
| URL | Total CPU Time (Ms) | Script Evaluation (Ms) | Script Parse (Ms) |
|---|---|---|---|
| https://askubuntu.com/ | 714.888 | 27.568 | 7.628 |
| https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js | 181.876 | 157.308 | 6.644 |
| https://cdn.sstatic.net/Js/stub.en.js?v=15d6a0a5a8bb | 173.924 | 165.188 | 4.06 |
| Unattributable | 122.636 | 4.444 | 0.776 |
| https://cdn.sstatic.net/Js/full-anon.en.js?v=c953cd518ec3 | 102.62 | 66.82 | 19.352 |
| https://secure.quantserve.com/quant.js | 58.244 | 44.324 | 7.504 |
| https://cdn.sstatic.net/Shared/stacks.css?v=b3fb80b2a709 | 56 | 0 | 0 |
Minimizes main-thread work — 1.5 s Main-thread work timing can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
| Category | Time Spent (Ms) |
|---|---|
| Script Evaluation | 516.776 |
| Style & Layout | 447.52 |
| Other | 204.372 |
| Parse HTML & CSS | 151.74 |
| Rendering | 132.824 |
| Script Parsing & Compilation | 58.576 |
| Garbage Collection | 1.624 |
All text remains visible during webfont loads Make use of the font-display CSS feature, which will ensure text is user-visible while webfonts are loading.
Keep request counts low and transfer sizes small — 16 requests • 237 KB It is advised to add a budgets.json file in order to set budgets for the quantity and size of page resources.
| Resource Type | Requests | Transfer Size (Bytes) |
|---|---|---|
| Total | 16 | 243137 |
| Script | 8 | 160052 |
| Stylesheet | 2 | 66562 |
| Document | 1 | 14095 |
| Other | 3 | 1356 |
| Image | 2 | 1072 |
| Media | 0 | 0 |
| Font | 0 | 0 |
| Third-party | 14 | 228332 |
Minimize third-party usage — Third-party code blocked the main thread for 160 ms It is advised to either limit, remove or delay the loading of redundant third-party code which may be significantly impacting load performance.
| Third-Party | Transfer Size (Bytes) | Main-Thread Blocking Time (Ms) |
|---|---|---|
| 161571 | 112.164 | |
| 34699 | 44.6 | |
| 19103 | 0 | |
| 9479 | 0 | |
| 3480 | 0 |
Largest Contentful Paint element — 1 element found The element which was identified as the Largest Contentful Paint.
| Element |
|---|
Avoid large layout shifts — No elements found Below is a list of all DOM elements that contribute to the CLS of the page.
Uses passive listeners to improve scrolling performance Improve the page's scroll performance by marking touch and wheel event listeners as 'passive'.
Avoids `document.write()` Avoid or limit the use of external scripts that are dynamically injected via 'document.write()' as users on slow connections will be delayed by tens of seconds.
Budgets
Performance budget It is advised to keep the quantity and size of all network requests under the targets set by the provided performance budget.
Timing budget It is advised to set a timing budget to monitor the performance of your site.
Metrics
First Contentful Paint — 2.6 s The time taken for the first image or text on the page to be rendered.
Largest Contentful Paint — 2.6 s The timing of the largest text or image that is painted.
Time to Interactive — 3.8 s The time taken for the page to become fully interactive.
Other
First CPU Idle — 3.7 s The time taken for the page's main thread to be quiet enough to handle input.
First Meaningful Paint — 2.6 s The time taken for the primary content of the page to be rendered.
First Contentful Paint (3G) — 5490 ms The time taken for the first image or text on the page to be rendered while on a 3G network.
Opportunities
Remove unused CSS — Potential savings of 62 KB Dead and/or unused rules in Style Sheets (CSS) can contribute to network payload sizes. Askubuntu.com should consider removing dead rules from style sheets and deferring the loading of CSS not used for above-the-fold content.
| URL | Transfer Size (Bytes) | Potential Savings (Bytes) |
|---|---|---|
| https://cdn.sstatic.net/Sites/askubuntu/mobile.css?v=d92d4af65e3e | 35862 | 32736 |
| https://cdn.sstatic.net/Shared/stacks.css?v=b3fb80b2a709 | 30700 | 30263 |
Remove unused JavaScript — Potential savings of 102 KB It is advised to remove unused JavaScript in order to reduce bytes consumed by network activity.
| URL | Transfer Size (Bytes) | Potential Savings (Bytes) |
|---|---|---|
| https://cdn.sstatic.net/Js/full-anon.en.js?v=c953cd518ec3 | 74235 | 58117 |
| https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js | 34699 | 20726 |
| https://cdn.sstatic.net/Js/stub.en.js?v=15d6a0a5a8bb | 16570 | 11954 |
| https://www.google-analytics.com/analytics.js | 19103 | 6961 |
| https://cdn.sstatic.net/Js/mobile.en.js?v=a168d277c579 | 4204 | 3676 |
| https://secure.quantserve.com/quant.js | 8427 | 3080 |
Diagnostics
Serve static assets with an efficient cache policy — 7 resources found Askubuntu.com can speed up repeat visits by increasing the cache lifetime, which is essentially how long before a cached copy expires.
| URL | Cache TTL (Ms) | Transfer Size (Bytes) |
|---|---|---|
| https://www.google-analytics.com/analytics.js | 7200000 | 19103 |
| https://rules.quantcount.com/rules-p-c1rF4kxgLUzNc.js | 86400000 | 508 |
| https://cdn.sstatic.net/Js/full-anon.en.js?v=c953cd518ec3 | 604800000 | 74235 |
| https://cdn.sstatic.net/Sites/askubuntu/mobile.css?v=d92d4af65e3e | 604800000 | 35862 |
| https://cdn.sstatic.net/Shared/stacks.css?v=b3fb80b2a709 | 604800000 | 30700 |
| https://cdn.sstatic.net/Js/stub.en.js?v=15d6a0a5a8bb | 604800000 | 16570 |
| https://cdn.sstatic.net/Js/mobile.en.js?v=a168d277c579 | 604800000 | 4204 |
Avoid an excessive DOM size — 1,016 elements A large DOM (Document Object Model) will increase memory usage, cause longer system calculations as well as costly layout reflows.
| Statistic | Element | Value |
|---|---|---|
| Total DOM Elements | 1,016 | |
| Maximum DOM Depth | 9 | |
| Maximum Child Elements | 48 |
Opportunities
Eliminate render-blocking resources — Potential savings of 1,430 ms Resources, such as JavaScript and style sheets, can block the first paint of the page. Askubuntu.com should consider delivering critical JavaScript/style sheets (JS/CSS) inline and deferring all non-critical JS/CSS.
| URL | Transfer Size (Bytes) | Potential Savings (Ms) |
|---|---|---|
| https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js | 34699 | 1380 |
| https://cdn.sstatic.net/Js/stub.en.js?v=15d6a0a5a8bb | 16570 | 1080 |
| https://cdn.sstatic.net/Js/mobile.en.js?v=a168d277c579 | 4204 | 780 |
| https://cdn.sstatic.net/Shared/stacks.css?v=b3fb80b2a709 | 30700 | 1380 |
| https://cdn.sstatic.net/Sites/askubuntu/mobile.css?v=d92d4af65e3e | 35862 | 1530 |
Accessibility
Indicates how accessible the page is and highlights opportunities where the page can be made more accessible to users of askubuntu.com. This includes details about various page attributes that can be optimized.Navigation
`[accesskey]` values are unique Access keys assist users with focusing on different parts of the page. Each access key should be unique for proper navigation.
The page contains a heading, skip link, or landmark region It is advised to provide ways to bypass repetitive content, allowing users to navigate the page efficiently.
`[id]` attributes on active, focusable elements are unique Ensure all focusable elements have a unique id value to allow them to be visible to users of assistive technologies, like a screen reader.
Heading elements appear in a sequentially-descending order Properly order all headers and do not skip heading levels to better the navigation and readability for users of assistive technologies, like a screen reader.
No element has a `[tabindex]` value greater than 0 Although technically valid, a tabindex value greater than 0 often creates frustrating experiences for users who rely on assistive technologies.
ARIA
`[aria-*]` attributes match their roles Avoid mismatching 'aria-*' attributes and their 'role' value, as it invalidates the attribute.
`[aria-hidden="true"]` is not present on the document `<body>` If aria-hidden=true is set on the document body, assistive technologies, like a screen reader will work inconsistently.
`[aria-hidden="true"]` elements do not contain focusable descendents Interactive elements within an aria-hidden=true element are unavailable to users of assistive technologies, like a screen reader.
ARIA input fields have accessible names Generic names are announced to users of assistive technologies, like a screen reader, when an input field does not have an accessible name specified.
`[role]`s have all required `[aria-*]` attributes Some ARIA roles have required 'aria-*' attributes, which provide essential information about state and functionality.
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children. Some ARIA parent roles cannot perform their intended functions if specific child roles are not used.
`[role]`s are contained by their required parent element Some ARIA child roles cannot perform their intended functions if specific parent roles are not used.
`[role]` values are valid All ARIA roles require valid values to perform their intended functions.
ARIA toggle fields have accessible names Generic names are announced to users of assistive technologies, like a screen reader, when a toggle field does not have an accessible name specified.
`[aria-*]` attributes have valid values ARIA attributes cannot be interpreted with invalid values when used by screen readers and other assistive technologies.
`[aria-*]` attributes are valid and not misspelled ARIA attributes cannot be interpreted with invalid names when used by screen readers and other assistive technologies.
ARIA IDs are unique Ensure all ARIA ID values are unique to prevent elements from being overlooked by assistive technologies, like a screen reader.
Names and labels
Buttons have an accessible name Buttons become unusable as they are announced simply as "button" when the button does not have an accessible name, when used by screen readers and other assistive technologies.
Document has a `<title>` element Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
No form fields have multiple labels Having multiple labels for form fields can be confusing to assistive technologies, like a screen reader.
`<frame>` or `<iframe>` elements have a title Screen reader users and other assistive technology users rely on frame titles to describe the contents of frames.
Image elements have `[alt]` attributes Provide short and descriptive alternative text where possible on informative elements.
`<input type="image">` elements have `[alt]` text Input buttons with alternative text assist screen readers and other assistive technology users to understand its purpose.
Form elements have associated labels Screen readers and other assistive technologies rely on labels to properly announce form controls.
`<object>` elements have `[alt]` text It is advised that alt text is used on '<object>' elements in order to provide meaning to screen reader and other assistive technology users, as these technologies are unable to translate non-text content.
Tables and lists
`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements. Screen readers and other assistive technologies may produce poor and inaccurate output when definition lists are not properly marked up.
Definition list items are wrapped in `<dl>` elements In order for screen readers and other assistive technologies to properly announce definition list items ('<dt>' and '<dd>'), they must be wrapped in parent a '<dl>' element.
Presentational `<table>` elements avoid using `<th>`, `<caption>` or the `[summary]` attribute. It is advised to not include data elements in tables which are used for layout purposes, as it may create confusion for screen reader and other assistive technology users.
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`). Use proper list structure to aid screen readers and other assistive technologies.
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements In order for screen readers to announce list items, ensure that list items ('<li>') are contained within parent '<ul>' or '<ol>' tags.
Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table. Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that '<td>' cells using the headers attribute only refer to other cells in the same table, to improve screen reader user experience.
`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe. Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that table headers refer to some set of cells, to improve screen reader user experience.
Internationalization and localization
`<html>` element has a `[lang]` attribute It is advised to provide a lang attribute so that screen readers and other assistive technologies are guaranteed to announce the page's text correctly. When not provided, the user's default language setting will be used which may cause inaccuracies.
`<html>` element has a valid value for its `[lang]` attribute Specify a valid BCP 47 language in order to help screen readers and other assistive technologies announce text properly.
`[lang]` attributes have a valid value Specify a valid BCP 47 language on elements in order to help screen readers and other assistive technologies announce text properly.
Best practices
The document does not use `<meta http-equiv="refresh">` Pages that refresh automatically cause a poor user experience as focus is directed back to the top of the page unexpectedly.
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5. For users with low vision who rely on screen magnification, ensure that zooming is not disabled.
Audio and video
`<video>` elements contain a `<track>` element with `[kind="captions"]` Askubuntu.com may provide assistance to deaf or hearing-impaired users with captions on videos.
`<video>` elements contain a `<track>` element with `[kind="description"]` Askubuntu.com may provide relevant information that dialogue cannot, by using audio descriptions.
Contrast
Background and foreground colors do not have a sufficient contrast ratio. Many (if not most) users find low-contrast text difficult or impossible to read.
| Failing Elements |
|---|
Names and labels
Links do not have a discernible name In order to improve the navigation for screen reader and other assistive technology users, use link text that is unique, focusable and discernible.
| Failing Elements |
|---|
Manual Checks
The page has a logical tab order The visual layout should be logical in its tab order and users cannot focus elements that are offscreen.
Interactive controls are keyboard focusable Ensure that custom interactive controls are keyboard focusable and that a focus indicator is displayed.
Interactive elements indicate their purpose and state Ensure that interactive elements (such as links and buttons) are distinguishable from non-interactive elements and that they indicate their state.
The user's focus is directed to new content added to the page When new content (such as a dialogue) is added to the page, the user's focus should be directed to it.
User focus is not accidentally trapped in a region Avoid focus being accidentally trapped when a user tabs in and out of controls or regions on page.
Custom controls have associated labels Ensure that custom interactive controls have associated labels, which are provided by aria-label and aria-labelledby attributes.
Custom controls have ARIA roles Ensure that all custom interactive controls have appropriate ARIA roles.
Visual order on the page follows DOM order Ensure that the DOM order matches with the page's visual order, in order to improve navigation for screen readers and other assistive technologies.
Offscreen content is hidden from assistive technology Ensure that offscreen content is hidden through the use of "display:none" styling or the aria-hidden attribute.
HTML5 landmark elements are used to improve navigation Elements such as <main> and <nav> are recommended as they are used by screen readers and other assistive technologies to improve keyboard navigation.
Best Practices
Indicates the recommended, best practices currently in place on the page and highlights the best practices that askubuntu.com should incorporate. This includes practices such as protecting pages with HTTPS.Audits
Avoids requesting the geolocation permission on page load When requesting a user's location, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.
Avoids requesting the notification permission on page load When requesting permission to send notifications, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.
Audits
Allows users to paste into password fields Ensure that password inputs may be pasted into to aid in the user's ability to use password managers and improve security.
Displays images with correct aspect ratio Ensure that image display dimensions match their natural aspect ratio.
Displays images with appropriate size For maximum image clarity, ensure images have natural dimensions and are proportional to the display size and pixel ratio.
Audits
Page has the HTML doctype Ensure a doctype is specified to prevent the browser from switching to quirks-mode.
Properly defines charset It is advised to declare a character encoding, optionally via a <meta> tag in the first 1024 bytes of the HTML or in the Content-Type HTTP response header.
Audits
Avoids Application Cache Application cache is deprecated and is no longer recommended.
Detected JavaScript libraries Below is a list of all front-end JavaScript libraries that were detected on the page.
| Name | Version |
|---|---|
| jQuery | 1.12.4 |
Avoids deprecated APIs Avoid deprecated APIs which will eventually be removed the browser.
Audits
Does not use HTTPS — 1 insecure request found Ensure that all pages are protected with HTTPS (including those that do not handle sensitive data) as HTTPS prevents tampering and passive listening on communications between the app and its users. Additionally, HTTPS is a prerequisite for HTTP/2 and many new web platform APIs.
| Insecure URL |
|---|
| http://askubuntu.com/ |
Links to cross-origin destinations are unsafe Improve performance and prevent security vulnerabilities by adding rel="noopener" and rel="noreferrer" to external links.
| Failing Anchors |
|---|
Includes front-end JavaScript libraries with known security vulnerabilities — 4 vulnerabilities detected Ensure that the use of third-party scripts is minimal and that only trusted third-party scripts are used as some may contain known security vulnerabilities which may be exploited by attackers.
| Library Version | Vulnerability Count | Highest Severity |
|---|---|---|
| 4 | Medium |
Audits
Browser errors were logged to the console Below is a list of all errors logged to the console, which indicate unresolved problems on the site.
| URL | Description |
|---|---|
| https://www.google-analytics.com/r/collect | Failed to load resource: net::ERR_BLOCKED_BY_CLIENT.Inspector |
SEO
Indicates how well the page is optimized for ranking in search engines and highlights Search Engine Optimization (SEO) opportunities for askubuntu.com. This includes optimizations such as providing meta data.Mobile Friendly
Has a `<meta name="viewport">` tag with `width` or `initial-scale` It is advised to use a '<meta name="viewport">' tag for the optimization of askubuntu.com on mobile screens.
Content Best Practices
Document has a `<title>` element Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
Links have descriptive text Make use of descriptive link text to assist search engines in understanding the content.
Image elements have `[alt]` attributes Provide short and descriptive alternative text where possible on informative elements.
Document has a valid `hreflang` Search engines can be instructed to list specific versions of a page for a given language or region through the use of hreflang links.
Document has a valid `rel=canonical` Search engines can be suggested which URL should be shown in search results through the use of canonical links.
Document avoids plugins The content of plugins cannot be indexed by search engines and many devices either restrict or do not support them.
Crawling and Indexing
Page has successful HTTP status code Avoid pages with unsuccessful HTTP status codes as they may not be indexed by search engines.
Page isn’t blocked from indexing Pages that cannot be crawled by search engines cannot be indexed or included in their search results. Ensure that search engines have permission to crawl all pages that should be indexed.
robots.txt is valid Malformed robots.txt files prevent crawlers from understanding how a site wants to be crawled or indexed, which can be devastating to SEO.
Content Best Practices
Document does not have a meta description Meta descriptions may be used by search engines when displaying a link to the page and should concisely summarize the page's content.
Mobile Friendly
Document doesn't use legible font sizes — 54.26% legible text Font sizes of 12px or less are too small to most mobile users without user gestures and further action. Aim for more than 60% of page text to use font sizes greater than 12px.
| Source | Selector | % of Page Text | Font Size |
|---|---|---|---|
| html, body, div, span, applet, object, iframe, h1, h2, h3, h4, h5, h6, p, blockquote, pre, a, abbr, acronym, address, big, cite, code, del, dfn, em, img, ins, kbd, q, s, samp, small, strike, strong, sub, sup, tt, var, b, u, i, center, dl, dt, dd, ol, ul, li, fieldset, form, label, legend, table, caption, tbody, tfoot, thead, tr, th, td, article, aside, canvas, details, embed, figure, figcaption, footer, header, hgroup, menu, nav, output, ruby, section, summary, time, mark, audio, video | 14.59% | 11px | |
| html, body, div, span, object, iframe, h1, h2, h3, h4, h5, h6, p, blockquote, pre, abbr, address, cite, code, del, dfn, em, img, ins, kbd, q, samp, small, strong, sub, sup, var, b, i, dl, dt, dd, ol, ul, li, fieldset, form, label, legend, table, caption, tbody, tfoot, thead, tr, th, td, article, aside, canvas, details, figcaption, figure, footer, header, hgroup, menu, nav, section, summary, time, mark, audio, video | 1.00% | 11px | |
| 30.16% | < 12px | ||
| 54.26% | ≥ 12px |
Tap targets are not sized appropriately — 18% appropriately sized tap targets Interactive elements (such as buttons and links) should be appropriately spaced, sized and easy enough to select or tap with regard to their surrounding elements.
| Tap Target | Size | Overlapping Target |
|---|---|---|
| 19x12 | ||
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Manual Checks
Structured data is valid Structured data can be validated through the use of the Structured Data Testing Tool and the Structured Data Linter.
Progressive Web App
Indicates how valid the aspects of a Progressive Web App (PWA) are for the page and highlights opportunities to enable/improve the PWA of askubuntu.com. This includes details about web app manifests.Fast and reliable
Page load is fast enough on mobile networks Ensure that the page loads fast enough over a cellular network, to ensure good mobile user experience.
PWA Optimized
Redirects HTTP traffic to HTTPS It is advised to redirect all HTTP traffic to HTTPS, in order to enable secure web features for all users.
Content is sized correctly for the viewport Ensure that the width of the app's content matches the width of the viewport, otherwise the app might not be optimized for mobile screens.
Has a `<meta name="viewport">` tag with `width` or `initial-scale` It is advised to use a '<meta name="viewport">' tag for the optimization of askubuntu.com on mobile screens.
Contains some content when JavaScript is not available Apps should display alternative content for when JavaScript is disabled.
Fast and reliable
Current page does not respond with a 200 when offline In order for Progressive Web Apps to be made available offline, ensure that the app is using a service worker.
`start_url` does not respond with a 200 when offline Consider using a service worker for Progressive Web Apps to ensure greater reliability for the user, in the case of poor network conditions.
Installable
Does not use HTTPS — 1 insecure request found Ensure that all pages are protected with HTTPS (including those that do not handle sensitive data) as HTTPS prevents tampering and passive listening on communications between the app and its users. Additionally, HTTPS is a prerequisite for HTTP/2 and many new web platform APIs.
| Insecure URL |
|---|
| http://askubuntu.com/ |
Does not register a service worker that controls page and `start_url` A service worker is used to provide Progressive Web Apps the use of features such as working offline, the ability for the app to be added to the homescreen as well as push notifications.
Web app manifest does not meet the installability requirements User engagement may be increased by leveraging the browsers ability to proactively prompt users to add the app to their homescreen.
View Data
PWA Optimized
Is not configured for a custom splash screen Themed splash screens ensure a high-quality user experience at launch for app users.
View Data
Does not set a theme color for the address bar. A theme may be applied to the browser address bar, which ideally can be made to match the site.
View Data
Does not provide a valid `apple-touch-icon` iOS users of Progressive Web Apps will benefit from an apple touch icon, which can be defined with 'apple-touch-icon', which must point to a non-transparent 192px (or 180px) square PNG.
Manifest doesn't have a maskable icon Maskable icons are great to ensure that images fill the entire shape when installing the app on a device.
Manual Checks
Site works cross-browser Ensure that the Progressive Web App works correctly across every major browser.
Page transitions don't feel like they block on the network Users perceive apps with responsive, snappy transitions as higher peforming and ensures a great user experience, even on a slow network.
Each page has a URL Ensure that all pages are deep linkable via URL. They should also be unique for the purpose of shareability on social media.
Hosting
Server Location
| Server IP Address: | 151.101.129.69 |
| Continent: | North America |
| Country: | United States |
| Region: | |
| City: | |
| Longitude: | -97.822 |
| Latitude: | 37.751 |
| Currencies: | USD USN USS |
| Languages: | English |
Web Hosting Provider
| Name | IP Address |
|---|---|
| FASTLY |
Registration
Domain Registrant
| Private Registration: | No |
| Name: | Sysadmin Team |
| Organization: | Stack Exchange, Inc. |
| Country: | US |
| City: | New York |
| State: | NY |
| Post Code: | 10038 |
| Email: | sysadmin-team@stackoverflow.com |
| Phone: | +1.2122328280 |
Note: Registration information is derived from various sources and may be inaccurate.
Domain Registrar
| Name | IP Address |
|---|---|
| Name.com, Inc. | 104.18.7.161 |
Security
Visitor Safety
| Mature Content: | Not Likely |
| McAfee WebAdvisor Rating: | Safe |
| WOT Rating: | |
| WOT Trustworthiness: | |
| WOT Child Safety: |
Note: Safety information is not guaranteed.
SSL/TLS Certificate
| Issued To: | *.stackexchange.com |
| Issued By: | Let's Encrypt Authority X3 |
| Valid From: | 3rd May, 2020 |
| Valid To: | 1st August, 2020 |
| Subject: | CN = *.stackexchange.com |
| Hash: | c2e91283 |
| Issuer: | CN = Let's Encrypt Authority X3 O = Let's Encrypt S = US |
| Version: | 2 |
| Serial Number: | 0x032D7992CDB07E692D247E9C32B95EE2B0F1 |
| Serial Number (Hex): | 032D7992CDB07E692D247E9C32B95EE2B0F1 |
| Valid From: | 3rd May, 2024 |
| Valid To: | 1st August, 2024 |
| Signature Algorithm (Short Name): | RSA-SHA256 |
| Signature Algorithm (Long Name): | sha256WithRSAEncryption |
| Authority Key Identifier: | keyid:A8:4A:6A:63:04:7D:DD:BA:E6:D1:39:B7:A6:45:65:EF:F3:A8:EC:A1 |
| Extended Key Usage: | TLS Web Server Authentication, TLS Web Client Authentication |
| Certificate Policies: | Policy: 2.23.140.1.2.1 Policy: 1.3.6.1.4.1.44947.1.1.1 CPS: http://cps.letsencrypt.org |
| Authority Information Access: | OCSP - URI:http://ocsp.int-x3.letsencrypt.org CA Issuers - URI:http://cert.int-x3.letsencrypt.org/ |
| SCT List: | Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 5E:A7:73:F9:DF:56:C0:E7:B5:36:48:7D:D0:49:E0:32: 7A:91:9A:0C:84:A1:12:12:84:18:75:96:81:71:45:58 Timestamp : May 3 10:23:25.487 2020 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:1B:AB:73:F4:EA:08:DE:A0:0B:1B:74:D0: F4:98:54:22:EC:65:CE:4B:8F:F1:3D:61:A7:FA:43:78: CC:11:3C:62:02:21:00:90:7F:CF:49:F8:CC:87:94:3C: 38:C0:7A:AB:1D:61:26:5F:86:EA:F3:5D:CB:1C:D6:80: EF:E3:D8:F0:C8:68:45 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 07:B7:5C:1B:E5:7D:68:FF:F1:B0:C6:1D:23:15:C7:BA: E6:57:7C:57:94:B7:6A:EE:BC:61:3A:1A:69:D3:A2:1C Timestamp : May 3 10:23:25.530 2020 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:9F:C1:37:DE:D4:ED:C6:A0:A8:E3:EA: 24:1C:39:AC:C5:F5:97:2B:79:13:A8:9C:7F:14:1C:95: 3B:35:92:C1:99:02:20:34:FB:FB:FD:CE:31:68:11:95: 6C:30:C2:93:1D:02:7F:03:8A:2B:E6:66:46:0F:F6:35: EC:76:27:A4:C5:0A:8C |
| Key Usage: | Digital Signature, Key Encipherment |
| Basic Constraints: | CA:FALSE |
| Subject Alternative Name: | DNS:*.blogoverflow.com DNS:*.mathoverflow.net DNS:*.meta.stackexchange.com DNS:*.meta.stackoverflow.com DNS:*.serverfault.com DNS:*.sstatic.net DNS:*.stackexchange.com DNS:*.stackoverflow.com DNS:*.stackoverflow.email DNS:*.superuser.com DNS:askubuntu.com DNS:blogoverflow.com DNS:mathoverflow.net DNS:openid.stackauth.com DNS:serverfault.com DNS:sstatic.net DNS:stackapps.com DNS:stackauth.com DNS:stackexchange.com DNS:stackoverflow.blog DNS:stackoverflow.com DNS:stackoverflow.email DNS:stacksnippets.net DNS:superuser.com DNS:*.askubuntu.com |
Technical
DNS Lookup
A Records
| Host | IP Address | Class | TTL |
|---|---|---|---|
| askubuntu.com. | 151.101.1.69 | IN | 1799 |
| askubuntu.com. | 151.101.129.69 | IN | 1799 |
| askubuntu.com. | 151.101.193.69 | IN | 1799 |
| askubuntu.com. | 151.101.65.69 | IN | 1799 |
NS Records
| Host | Nameserver | Class | TTL |
|---|---|---|---|
| askubuntu.com. | ns-1376.awsdns-44.org. | IN | 21599 |
| askubuntu.com. | ns-1643.awsdns-13.co.uk. | IN | 21599 |
| askubuntu.com. | ns-cloud-e1.googledomains.com. | IN | 21599 |
| askubuntu.com. | ns-cloud-e2.googledomains.com. | IN | 21599 |
SOA Records
| Domain Name | Primary NS | Responsible Email | TTL |
|---|---|---|---|
| askubuntu.com. | ns-1643.awsdns-13.co.uk. | awsdns-hostmaster.amazon.com. | 899 |
TXT Records
| Host | Value | Class | TTL |
|---|---|---|---|
| askubuntu.com. | google-site-verification=PgJFv7ljJQmUa7wupnJgoim3Lx22fbQzyhES7-Q9cv8 | IN | 299 |
| askubuntu.com. | v=spf1 | IN | 299 |
HTTP Response Headers
| HTTP-Code: | HTTP/1.1 301 Moved Permanently |
| cache-control: | no-cache, no-store, must-revalidate |
| server: | Microsoft-IIS/10.0 |
| Date: | 28th May, 2020 |
| location: | https://askubuntu.com/ |
| x-flags: | AA |
| x-aspnet-duration-ms: | 0 |
| x-request-guid: | 43efe4d2-a052-4560-9cc3-38e167a67d46 |
| x-is-crawler: | 0 |
| x-providence-cookie: | 71cf3492-20a0-9409-1612-2b5db046c486 |
| Accept-Ranges: | bytes |
| Via: | 1.1 varnish |
| Connection: | keep-alive |
| X-Served-By: | cache-ewr18149-EWR |
| X-Cache: | MISS |
| X-Cache-Hits: | 0 |
| X-Timer: | S1590664713.539510,VS0,VE5 |
| Vary: | Fastly-SSL |
| X-DNS-Prefetch-Control: | off |
| Set-Cookie: | * |
Whois Lookup
| Created: | 30th July, 2010 |
| Changed: | 8th January, 2020 |
| Expires: | 2nd February, 2021 |
| Registrar: | Name.com, Inc. |
| Status: | clientTransferProhibited |
| Nameservers: | ns-1376.awsdns-44.org ns-1643.awsdns-13.co.uk ns-cloud-e1.googledomains.com ns-cloud-e2.googledomains.com |
| Owner Name: | Sysadmin Team |
| Owner Organization: | Stack Exchange, Inc. |
| Owner Street: | 110 William St , Floor 28 |
| Owner Post Code: | 10038 |
| Owner City: | New York |
| Owner State: | NY |
| Owner Country: | US |
| Owner Phone: | +1.2122328280 |
| Owner Email: | sysadmin-team@stackoverflow.com |
| Admin Name: | Sysadmin Team |
| Admin Organization: | Stack Exchange, Inc. |
| Admin Street: | 110 William St , Floor 28 |
| Admin Post Code: | 10038 |
| Admin City: | New York |
| Admin State: | NY |
| Admin Country: | US |
| Admin Phone: | +1.2122328280 |
| Admin Email: | sysadmin-team@stackoverflow.com |
| Tech Name: | Sysadmin Team |
| Tech Organization: | Stack Exchange, Inc. |
| Tech Street: | 110 William St , Floor 28 |
| Tech Post Code: | 10038 |
| Tech City: | New York |
| Tech State: | NY |
| Tech Country: | US |
| Tech Phone: | +1.2122328280 |
| Tech Email: | sysadmin-team@stackoverflow.com |
| Full Whois: | Domain Name: ASKUBUNTU.COM Registry Domain ID: 1608990285_DOMAIN_COM-VRSN Registrar WHOIS Server: whois.name.com Registrar URL: http://www.name.com Updated Date: 2020-01-08T15:09:07Z Creation Date: 2010-07-30T23:46:41Z Registrar Registration Expiration Date: 2021-02-02T11:59:59Z Registrar: Name.com, Inc. Registrar IANA ID: 625 Reseller: Domain Status: clientTransferProhibited https://www.icann.org/epp#clientTransferProhibited Registry Registrant ID: Not Available From Registry Registrant Name: Sysadmin Team Registrant Organization: Stack Exchange, Inc. Registrant Street: 110 William St , Floor 28 Registrant City: New York Registrant State/Province: NY Registrant Postal Code: 10038 Registrant Country: US Registrant Phone: +1.2122328280 Registrant Email: sysadmin-team@stackoverflow.com Registry Admin ID: Not Available From Registry Admin Name: Sysadmin Team Admin Organization: Stack Exchange, Inc. Admin Street: 110 William St , Floor 28 Admin City: New York Admin State/Province: NY Admin Postal Code: 10038 Admin Country: US Admin Phone: +1.2122328280 Admin Email: sysadmin-team@stackoverflow.com Registry Tech ID: Not Available From Registry Tech Name: Sysadmin Team Tech Organization: Stack Exchange, Inc. Tech Street: 110 William St , Floor 28 Tech City: New York Tech State/Province: NY Tech Postal Code: 10038 Tech Country: US Tech Phone: +1.2122328280 Tech Email: sysadmin-team@stackoverflow.com Name Server: ns-1643.awsdns-13.co.uk Name Server: ns-1376.awsdns-44.org Name Server: ns-cloud-e1.googledomains.com Name Server: ns-cloud-e2.googledomains.com DNSSEC: unSigned Registrar Abuse Contact Email: abuse@name.com Registrar Abuse Contact Phone: +1.7203101849 URL of the ICANN WHOIS Data Problem Reporting System: http://wdprs.internic.net/ >>> Last update of WHOIS database: 2020-05-28T11:18:33Z <<< For more information on Whois status codes, please visit https://icann.org/epp The data in the Name.com, Inc. WHOIS database is provided by Name.com, Inc. for information purposes, and to assist persons in obtaining information about or related to a domain name registration record. Name.com, Inc. does not guarantee its accuracy. Users accessing the Name.com, Inc. WHOIS service agree to use the data only for lawful purposes, and under no circumstances may this data be used to: a) allow, enable, or otherwise support the transmission by e-mail, telephone, or facsimile of mass unsolicited, commercial advertising or solicitations to entities other than the registrar's own existing customers and b) enable high volume, automated, electronic processes that send queries or data to the systems of Name.com, Inc., except as reasonably necessary to register domain names or modify existing registrations. When using the Name.com, Inc. WHOIS service, please consider the following: the WHOIS service is not a replacement for standard EPP commands to the SRS service. WHOIS is not considered authoritative for registered domain objects. The WHOIS service may be scheduled for downtime during production or OT&E maintenance periods. Where applicable, the presence of a [Non-Public Data] tag indicates that such data is not made publicly available due to applicable data privacy laws or requirements. Access to non-public data may be provided, upon request, where it can be reasonably confirmed that the requester holds a specific legitimate interest and a proper legal basis, for accessing the withheld data. Access to this data can be requested by submitting a request via the form found at https://www.name.com/layered-access-request . Name.com, Inc. reserves the right to modify these terms at any time. By submitting this query, you agree to abide by this policy. |
Nameservers
| Name | IP Address |
|---|---|
| ns-1376.awsdns-44.org | 205.251.197.96 |
| ns-1643.awsdns-13.co.uk | 205.251.198.107 |
| ns-cloud-e1.googledomains.com | 216.239.32.110 |
| ns-cloud-e2.googledomains.com | 216.239.34.110 |
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