Skip to content
https://superuser.com

Lighthouse Desktop

· 0 checks — Desktop Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.
SCORE
0
GRADE
FIX
0
REVIEW
0
PASS
0
INFO
0

Detailed Report

Audit breakdown by category with detailed findings.

75

Performance

Insights

Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile Baseline features, unless you know you must support older browsers. Learn why most sites can deploy ES6+ code without transpiling

Why this matters

Performance issues directly impact user engagement and conversion rates.

3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.

Why this matters

Performance issues directly impact user engagement and conversion rates.

A long cache lifetime can speed up repeat visits to your page. Learn more about caching.

Why this matters

Performance issues directly impact user engagement and conversion rates.

RequestCache TTLTransfer Size
/stackoverflow-M6HzSe6yue/mapping.base/prebid-wrapper.js3600.0 s84.0 KiB
cdn.cookielaw.org/scripttemplates/202602.1.0/otBannerSdk.js86400.0 s129.0 KiB
/stackoverflow-M6HzSe6yue/mapping.base/prebid-load.js3600.0 s16.5 KiB
superuser.com/Content/Js/full-anon.en.js?v=037e97b07fca604800.0 s128.8 KiB
superuser.com/Content/Shared/stacks.css?v=b2264ccf0463604800.0 s110.2 KiB
raven-static.aditude.io/prod/1.19.14-y0ptsc/raven.js604800.0 s107.1 KiB
cdn.cookielaw.org/scripttemplates/202602.1.0/otGPP.js86400.0 s22.2 KiB
superuser.com/Content/Img/favicons-sprite16.png?v=7c49858b1c47604800.0 s87.6 KiB
superuser.com/cdn-cgi/challenge-platform/h/b/scripts/jsd/0b8fb825cb67/main.js?14400.0 s12.4 KiB
cdn.cookielaw.org/scripttemplates/202602.1.0/otTCF.js86400.0 s17.8 KiB
superuser.com/Content/Sites/superuser/primary.css?v=ae45545ad649604800.0 s69.5 KiB
htlbid.com/v3/mapping.base/htlbid.js?v=1.4600.0 s7.3 KiB
cdn.cookielaw.org/scripttemplates/otSDKStub.js86400.0 s8.8 KiB
superuser.com/Content/Js/webpack-chunks/svelte.en.js?v=f773033c4e0b604800.0 s32.1 KiB
/Content/Js/third-party/npm/@stackoverflow/stacks/dist/js...604800.0 s30.5 KiB
www.gravatar.com/avatar/4c5b24abfdbe0d1ba60f3c012b5f85fe?s=32&d=identicon&r=PG300.0 s3.0 KiB
raven-edge.aditude.io/raven/stackoverflow-main-I67Hg/library.js300.0 s2.6 KiB
/components/htl-injector-component.6f9fd855080891057769.js86400.0 s5.1 KiB
superuser.com/Content/Js/stub.en.js?v=e307fb81e738604800.0 s18.1 KiB
/components/creative-timed-refresh-component.a1a922b43837...86400.0 s4.1 KiB
www.gravatar.com/avatar/cb96169403450ab7cc3cb7994ed4283f?s=32&d=identicon&r=PG300.0 s1.6 KiB
superuser.com/Content/Js/webpack-chunks/stacks-svelte.en.js?v=297d3b9a88f6604800.0 s12.8 KiB
/components/htl-prebid-floors-component.d3bc1be21aeafbc98...86400.0 s2.9 KiB
/components/first-party-data-component.9031b6342187473708...86400.0 s2.9 KiB
/avatar/f5e703a0b5d5aca9eea6e22dd56c6cce?s=32&d=identicon...300.0 s1.1 KiB
/avatar/1c7750e938e081d65306db4682dd2bbc?s=32&d=identicon...300.0 s1.1 KiB
/avatar/b4903e6948943a412b3897c1739c5088?s=32&d=identicon...300.0 s1018 B
superuser.com/Content/Js/webpack-chunks/9366.en.js?v=c8d4e4e64bf3604800.0 s8.7 KiB
cdn.cookielaw.org/scripttemplates/gpp.stub.js86400.0 s2.1 KiB
www.gravatar.com/avatar/a007be5a61f6aa8f3e85ae2fc18dd66e?s=32&d=identicon&r=PG300.0 s915 B
superuser.com/Content/Js/islands/signup-modal.en.js?v=f64ec881ea96604800.0 s8.4 KiB
/components/throttle-refresh-component.de8e70e8b17a42bbf0...86400.0 s1.6 KiB
/prod/1.19.14-y0ptsc/prebid-analytics.980e6134af0dbb700d9...604800.0 s5.5 KiB
/components/refresh-all-ads-component.db7de998acab3aec35b...86400.0 s1.4 KiB
superuser.com/Content/Shared/Channels/channels.css?v=d431b1be5a03604800.0 s4.6 KiB
/components/taboola-auto-tagId-component.d35311409295ad80...86400.0 s1.1 KiB
superuser.com/px.js?ch=114400.0 s543 B
superuser.com/px.js?ch=214400.0 s391 B
superuser.com/Content/Js/google-analytics.en.js?v=48615a9a9bc4604800.0 s2.4 KiB
lh3.googleusercontent.com/a/AATXAJwrnloKlBGCT9cN6NKV8iEAKxmUyqgpNjDG9rTg=k-s3286400.0 s542 B
superuser.com/Content/Js/islands/one-tap.en.js?v=102f0378a2cf604800.0 s1.8 KiB
superuser.com/Content/Sites/superuser/Img/logo.svg?v=4bc8a703ebac604800.0 s1.4 KiB
superuser.com/Content/Js/sprinkles/left-nav-events.en.js?v=2ac13fd60bf6604800.0 s1.1 KiB
superuser.com/Content/Js/sprinkles/cookie-consent.en.js?v=7ee6963139c5604800.0 s912 B
superuser.com/Content/Js/explore-qlist.en.js?v=ee2a4f8c3992604800.0 s887 B
superuser.com/Content/Sites/superuser/Img/icon-48.png?v=9e499a07ff97604800.0 s477 B

Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.

Why this matters

Performance issues directly impact user engagement and conversion rates.

description: [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints help the browser establish a connection earlier in the page load, saving time when the first request for that origin is made. The following are the origins that the page preconnected to.
title: Preconnected origins
value: no origins were preconnected
description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.
title: Preconnect candidates

Requests are blocking the page's initial render, which may delay LCP. Deferring or inlining can move these network requests out of the critical path.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer SizeDuration
superuser.com/px.js?ch=2391 B
superuser.com/px.js?ch=1543 B
ajax.googleapis.com/ajax/libs/jquery/3.7.1/jquery.min.js30.4 KiB271 ms
cdn.cookielaw.org/scripttemplates/otSDKStub.js8.8 KiB
superuser.com/Content/Sites/superuser/primary.css?v=ae45545ad64969.5 KiB141 ms
superuser.com/Content/Shared/stacks.css?v=b2264ccf0463110.2 KiB188 ms
cdn.cookielaw.org/scripttemplates/gpp.stub.js2.1 KiB213 ms
superuser.com/Content/Shared/Channels/channels.css?v=d431b1be5a034.6 KiB
superuser.com/Content/Js/google-analytics.en.js?v=48615a9a9bc42.4 KiB
superuser.com/Content/Js/stub.en.js?v=e307fb81e73818.1 KiB

Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLResource SizeEst Savings
div#hot-network-questions > ul > li.js-hidden > div.favicon div#hot-network-questions > ul > li.js-hidden > div.favicon
superuser.com/Content/Img/favicons-sprite16.png?v=7c49858b1c4787.4 KiB68.8 KiB

These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.

The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

Diagnostics

Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 160 ms 169.7 KiB
URLTransfer SizeEst Savings
superuser.com/Content/Shared/stacks.css?v=b2264ccf0463110.1 KiB104.3 KiB
superuser.com/Content/Sites/superuser/primary.css?v=ae45545ad64969.5 KiB65.4 KiB

Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 440 ms 665.5 KiB
URLTransfer SizeEst Savings
/pagead/managed/js/gpt/m202604160201/pubads_impl.js187.7 KiB124.2 KiB
superuser.com/Content/Js/full-anon.en.js?v=037e97b07fca128.7 KiB94.3 KiB
/prebid/9.30.0.js?fork=1&v=bf6611fc0393cee6578a23c9bb5689...130.3 KiB93.9 KiB
cdn.cookielaw.org/scripttemplates/202602.1.0/otBannerSdk.js128.8 KiB72.2 KiB
accounts.google.com/gsi/client95.4 KiB71.4 KiB
raven-static.aditude.io/prod/1.19.14-y0ptsc/raven.js106.8 KiB63.3 KiB
www.googletagmanager.com/gtag/js?id=G-S812YQPLT2154.3 KiB60.0 KiB
/stackoverflow-M6HzSe6yue/mapping.base/prebid-wrapper.js83.6 KiB32.6 KiB
superuser.com/Content/Js/webpack-chunks/svelte.en.js?v=f773033c4e0b32.0 KiB31.8 KiB
/Content/Js/third-party/npm/@stackoverflow/stacks/dist/js...30.4 KiB21.7 KiB

Many navigations are performed by going back to a previous page, or forwards again. The back/forward cache (bfcache) can speed up these return navigations. Learn more about the bfcache

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failure reasonFailure type
Pages with WebSocket cannot enter back/forward cache.Pending browser support

Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL
Super User header.site-header > div.site-header--container > a.site-header--link > img.h-auto
superuser.com/Content/Sites/superuser/Img/logo.svg?v=4bc8a703ebac

More information about the performance of your application. These numbers don't directly affect the Performance score.

●Layout shift culprits
●Document request latency
●Optimize DOM size
●Font display
●Forced reflow
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●Minify JavaScript
●Avoids enormous network payloads Total size was 1,818 KiB
●User Timing marks and measures 5 user timings
●JavaScript execution time 1.1 s
●Minimizes main-thread work 2.0 s
●Avoid long main-thread tasks 9 long tasks found
●Network Requests
●Network Round Trip Times 90 ms
●Server Backend Latencies 20 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Avoid multiple page redirects
●Initial server response time was short Root document took 150 ms
●Avoid large layout shifts 1 layout shift found
○INP breakdown
○LCP request discovery
○Avoid non-composited animations
91

Accessibility

These checks highlight opportunities to improve the accessibility of your web app. Automatic detection can only detect a subset of issues and does not guarantee the accessibility of your web app, so manual testing is also encouraged.

Contrast

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Try for free ol.nav-links > li.js-freemium-cta > div.px8 > a.w100
Ask Question div#mainbar > div.d-flex > div.ml12 > a.ws-nowrap
more tags div#mainbar > div.d-flex > div.flex--item > a.more-tags
Broken name resolution and connection on wireguard interface when devices are o… div#question-summary-1936943 > div.s-post-summary--content > h3.s-post-summary--content-title > a.s-link
Mihir div.s-user-card--info > div.s-user-card--link > a.flex--item > span
8k div#question-summary-1128864 > div.s-post-summary--stats > div.s-post-summary--stats-item > span.s-post-summary--stats-item-number
views div#question-summary-1128864 > div.s-post-summary--stats > div.s-post-summary--stats-item > span.s-post-summary--stats-item-unit
Automated PuTTY session load and commands div#question-summary-1128864 > div.s-post-summary--content > h3.s-post-summary--content-title > a.s-link
Community div.s-user-card--info > div.s-user-card--link > a.flex--item > span
4k div#question-summary-334139 > div.s-post-summary--stats > div.s-post-summary--stats-item > span.s-post-summary--stats-item-number
views div#question-summary-334139 > div.s-post-summary--stats > div.s-post-summary--stats-item > span.s-post-summary--stats-item-unit
Executable does not exist in /usr/local/bin, but it does in /usr/bin, yet it st… div#question-summary-334139 > div.s-post-summary--content > h3.s-post-summary--content-title > a.s-link
Community div.s-user-card--info > div.s-user-card--link > a.flex--item > span
How to set an alias in Windows Command Line? div#question-summary-560519 > div.s-post-summary--content > h3.s-post-summary--content-title > a.s-link
Qwerty div.s-user-card--info > div.s-user-card--link > a.flex--item > span
Windows batch files: popd returns 0 error code but still triggers || conditiona… div#question-summary-1936942 > div.s-post-summary--content > h3.s-post-summary--content-title > a.s-link
Regus Pregus div.s-user-card--info > div.s-user-card--link > a.flex--item > span
How do I preview a camera in Microsoft Teams? div#question-summary-1936916 > div.s-post-summary--content > h3.s-post-summary--content-title > a.s-link
Manngo div.s-user-card--info > div.s-user-card--link > a.flex--item > span
How do you find out the version number of Microsoft Publisher by clicking butto… div#question-summary-1936902 > div.s-post-summary--content > h3.s-post-summary--content-title > a.s-link
cachius div.s-user-card--info > div.s-user-card--link > a.flex--item > span
33k div#question-summary-926077 > div.s-post-summary--stats > div.s-post-summary--stats-item > span.s-post-summary--stats-item-number
views div#question-summary-926077 > div.s-post-summary--stats > div.s-post-summary--stats-item > span.s-post-summary--stats-item-unit
Remove entry from Microsoft Word Navigation Pane div#question-summary-926077 > div.s-post-summary--content > h3.s-post-summary--content-title > a.s-link
AJM div.s-user-card--info > div.s-user-card--link > a.flex--item > span
7k div#question-summary-1491600 > div.s-post-summary--stats > div.s-post-summary--stats-item > span.s-post-summary--stats-item-number
views div#question-summary-1491600 > div.s-post-summary--stats > div.s-post-summary--stats-item > span.s-post-summary--stats-item-unit
How can I set my preferred game controller through the registry? div#question-summary-1491600 > div.s-post-summary--content > h3.s-post-summary--content-title > a.s-link
Community div.s-user-card--info > div.s-user-card--link > a.flex--item > span
8k div#question-summary-1004515 > div.s-post-summary--stats > div.s-post-summary--stats-item > span.s-post-summary--stats-item-number
views div#question-summary-1004515 > div.s-post-summary--stats > div.s-post-summary--stats-item > span.s-post-summary--stats-item-unit
how to fix unknown directive error in nginx? div#question-summary-1004515 > div.s-post-summary--content > h3.s-post-summary--content-title > a.s-link
Community div.s-user-card--info > div.s-user-card--link > a.flex--item > span
9k div#question-summary-1485706 > div.s-post-summary--stats > div.s-post-summary--stats-item > span.s-post-summary--stats-item-number
views div#question-summary-1485706 > div.s-post-summary--stats > div.s-post-summary--stats-item > span.s-post-summary--stats-item-unit
How to delete Search History in Outlook 2016 div#question-summary-1485706 > div.s-post-summary--content > h3.s-post-summary--content-title > a.s-link
AJM div.s-user-card--info > div.s-user-card--link > a.flex--item > span
1k div#question-summary-1718873 > div.s-post-summary--stats > div.s-post-summary--stats-item > span.s-post-summary--stats-item-number
views div#question-summary-1718873 > div.s-post-summary--stats > div.s-post-summary--stats-item > span.s-post-summary--stats-item-unit
Windows Unable to delete file with reserved name div#question-summary-1718873 > div.s-post-summary--content > h3.s-post-summary--content-title > a.s-link
AJM div.s-user-card--info > div.s-user-card--link > a.flex--item > span
10k div#question-summary-725630 > div.s-post-summary--stats > div.s-post-summary--stats-item > span.s-post-summary--stats-item-number
views div#question-summary-725630 > div.s-post-summary--stats > div.s-post-summary--stats-item > span.s-post-summary--stats-item-unit
Where can I find the xmodemsend command in TeraTerm? div#question-summary-725630 > div.s-post-summary--content > h3.s-post-summary--content-title > a.s-link
Fady GG div.s-user-card--info > div.s-user-card--link > a.flex--item > span
1k div#question-summary-1186984 > div.s-post-summary--stats > div.s-post-summary--stats-item > span.s-post-summary--stats-item-number
views div#question-summary-1186984 > div.s-post-summary--stats > div.s-post-summary--stats-item > span.s-post-summary--stats-item-unit
Combine multiple ifs in bash div#question-summary-1186984 > div.s-post-summary--content > h3.s-post-summary--content-title > a.s-link
Kamil Maciorowski div.s-user-card--info > div.s-user-card--link > a.flex--item > span
Browse more Questions div#content > div.inner-content > div#mainbar > a.s-btn
LilyPond: how to set automatic beaming for both sixteenth notes and sixteenth-t… div#hot-network-questions > ul > li > a.js-gps-track
Determining a quadrilateral up to similarity with four angles div#hot-network-questions > ul > li > a.js-gps-track
What did Jesus mean by we will do greater things than he did div#hot-network-questions > ul > li > a.js-gps-track
Book where cadets are trapped in a building fending off "spine eels" while copi… div#hot-network-questions > ul > li > a.js-gps-track
How to remove blood from broom in Goblin Cleanup? div#hot-network-questions > ul > li > a.js-gps-track
Thinking of quitting postdoc, how to pivot safely? div#hot-network-questions > ul > li > a.js-gps-track
What if the Columbia foam strike damage was spotted immediately? div#hot-network-questions > ul > li > a.js-gps-track
Why did the referee keep the defender 6 feet away from the baseline? div#hot-network-questions > ul > li > a.js-gps-track
Can't humans create artifacts 𝘦𝘹 𝘯𝘪𝘩𝘪𝘭𝘰? div#hot-network-questions > ul > li > a.js-gps-track
Is it discriminatory to require documentation for menstrual disorders? div#hot-network-questions > ul > li > a.js-gps-track
The Distinction Between Human Definitions and Pre-existing Platonic Forms div#hot-network-questions > ul > li > a.js-gps-track
Power Inductor Inrush current limiter div#hot-network-questions > ul > li > a.js-gps-track
What is the effect of Command: Grovel on a creature that is immune to the prone… div#hot-network-questions > ul > li.js-hidden > a.js-gps-track
How to rank my ~30 extension cords to get rid of poorer half? div#hot-network-questions > ul > li.js-hidden > a.js-gps-track
Why is "cross" used for stage movements in scripts? div#hot-network-questions > ul > li.js-hidden > a.js-gps-track
Origin of the trope of humanity living underground while the surface is alleged… div#hot-network-questions > ul > li.js-hidden > a.js-gps-track
How did Pythagoras study in ancient Egypt? div#hot-network-questions > ul > li.js-hidden > a.js-gps-track
Why present perfect simple but not continuous? div#hot-network-questions > ul > li.js-hidden > a.js-gps-track
How to get the timestamp of an electronic signature in PDF? div#hot-network-questions > ul > li.js-hidden > a.js-gps-track
Can I use brushes intended for other applications? div#hot-network-questions > ul > li.js-hidden > a.js-gps-track
Pair of identities for coefficients of the exponential transform div#hot-network-questions > ul > li.js-hidden > a.js-gps-track
Is a habitable moon possible in a polar orbit around a gas giant? div#hot-network-questions > ul > li.js-hidden > a.js-gps-track
Dealing with overflow in chrono div#hot-network-questions > ul > li.js-hidden > a.js-gps-track
Is 加 both a semantic and phonetic component of 駕? div#hot-network-questions > ul > li.js-hidden > a.js-gps-track
Recent questions feed div.inner-content > div#sidebar > div#feed-link > a
SUPER USER nav.site-footer--nav > div.site-footer--col > h5.-title > a
COMPANY nav.site-footer--nav > div.site-footer--col > h5.-title > a.js-gps-track
STACK EXCHANGE NETWORK div.site-footer--col > div > h5.-title > a
Site design / logo © 2026 Stack Exchange Inc; div.site-footer--container > div.site-footer--copyright > p.md:mb0 > span
user contributions licensed under div.site-footer--container > div.site-footer--copyright > p.md:mb0 > span
rev 2026.4.21.42306 div.site-footer--container > div.site-footer--copyright > p.md:mb0 > span#svnrev

These are opportunities to improve the legibility of your content.

Navigation

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Broken name resolution and connection on wireguard interface when devices are o… div > div#question-summary-1936943 > div.s-post-summary--content > h3.s-post-summary--content-title

These are opportunities to improve keyboard navigation in your application.

Names and labels

Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
body.home-page > header.s-topbar > div.s-topbar--container > a.s-topbar--logo body.home-page > header.s-topbar > div.s-topbar--container > a.s-topbar--logo

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

○Interactive controls are keyboard focusable
○Interactive elements indicate their purpose and state
○The page has a logical tab order
○Visual order on the page follows DOM order
○User focus is not accidentally trapped in a region
○The user's focus is directed to new content added to the page
○HTML5 landmark elements are used to improve navigation
○Offscreen content is hidden from assistive technology
○Custom controls have associated labels
○Custom controls have ARIA roles
●`[aria-*]` attributes match their roles
●`[aria-hidden="true"]` is not present on the document `<body>`
●`[role]`s have all required `[aria-*]` attributes
●`[role]` values are valid
●`[aria-*]` attributes have valid values
●`[aria-*]` attributes are valid and not misspelled
●Buttons have an accessible name
●Image elements have `[alt]` attributes
●Form elements have associated labels
●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
●ARIA attributes are used as specified for the element's role
●Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
●`[aria-hidden="true"]` elements do not contain focusable descendents
●Elements use only permitted ARIA attributes
●Document has a `<title>` element
●`<html>` element has a `[lang]` attribute
●`<html>` element has a valid value for its `[lang]` attribute
●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
●No element has a `[tabindex]` value greater than 0
●Touch targets have sufficient size and spacing.
●Document has a main landmark.
●Deprecated ARIA roles were not used
●Uses ARIA roles only on compatible elements
●Identical links have the same purpose.
●Elements with visible text labels have matching accessible names.
○`[accesskey]` values are unique
○`button`, `link`, and `menuitem` elements have accessible names
○ARIA input fields have accessible names
○ARIA `meter` elements have accessible names
○ARIA `progressbar` elements have accessible names
○Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
○`[role]`s are contained by their required parent element
○Elements with the `role=text` attribute do not have focusable descendents.
○ARIA toggle fields have accessible names
○ARIA `tooltip` elements have accessible names
○ARIA `treeitem` elements have accessible names
○The page contains a heading, skip link, or landmark region
○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
○Definition list items are wrapped in `<dl>` elements
○ARIA IDs are unique
○No form fields have multiple labels
○`<frame>` or `<iframe>` elements have a title
○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
○Input buttons have discernible text.
○`<input type="image">` elements have `[alt]` text
○Links are distinguishable without relying on color.
○The document does not use `<meta http-equiv="refresh">`
○`<object>` elements have alternate text
○Select elements have associated label elements.
○Skip links are focusable.
○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
○`[lang]` attributes have a valid value
○`<video>` elements contain a `<track>` element with `[kind="captions"]`
○Tables have different content in the summary attribute and `<caption>`.
○All heading elements contain content.
○Image elements do not have `[alt]` attributes that are redundant text.
○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.
○`<td>` elements in a large `<table>` have one or more table headers.
77

Best Practices

General

Deprecated APIs will eventually be removed from the browser. Learn more about deprecated APIs.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / WarningSource
SharedStorage
superuser.com/cdn-cgi/challenge-platform/scripts/jsd/main.js
StorageType.persistent is deprecated. Please use standardized navigator.storage instead.
superuser.com/cdn-cgi/challenge-platform/scripts/jsd/main.js
Fledge
superuser.com/cdn-cgi/challenge-platform/scripts/jsd/main.js

Errors logged to the console indicate unresolved problems. They can come from network request failures and other browser concerns. Learn more about this errors in console diagnostic audit

Why this matters

Performance issues directly impact user engagement and conversion rates.

SourceDescription
accounts.google.com/gsi/client line 85, col 88
[GSI_LOGGER]: FedCM get() rejects with NetworkError: Error retrieving a token.
superuser.com/
Not signed in with the identity provider.
●Uses HTTPS
●Avoids third-party cookies
●Allows users to paste into input fields
●Avoids requesting the geolocation permission on page load
●Avoids requesting the notification permission on page load
●Displays images with correct aspect ratio
●Serves images with appropriate resolution
●Page has the HTML doctype
●Properly defines charset
●No issues in the `Issues` panel in Chrome Devtools
●Ensure CSP is effective against XSS attacks
●Use a strong HSTS policy
●Ensure proper origin isolation with COOP
●Mitigate DOM-based XSS with Trusted Types
●Detected JavaScript libraries
●Page has valid source maps
○Redirects HTTP traffic to HTTPS
○Mitigate clickjacking with XFO or CSP
92

SEO

These checks ensure that your page is following basic search engine optimization advice. There are many additional factors Lighthouse does not score here that may affect your search ranking, including performance on Core Web Vitals. Learn more about Google Search Essentials.

Content Best Practices

Descriptive link text helps search engines understand your content. Learn how to make links more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Link destinationLink Text
/internal/?utm_medium=referral&utm_source=superuser-commu...Learn more
/internal/?utm_medium=referral&utm_source=superuser-commu...Learn more

Format your HTML in a way that enables crawlers to better understand your app’s content.

○Structured data is valid
●Page isn’t blocked from indexing
●Document has a `<title>` element
●Document has a meta description
●Page has successful HTTP status code
●Links are crawlable
●Image elements have `[alt]` attributes
●Document has a valid `hreflang`
●Document has a valid `rel=canonical`
○robots.txt is valid

Send Feedback