https://acm.org
Lighthouse Desktop
· 0 checks — Desktop Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.SCORE
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Detailed Report
Audit breakdown by category with detailed findings.
35
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.
Layout shifts occur when elements move absent any user interaction. Investigate the causes of layout shifts, such as elements being added, removed, or their fonts changing as the page loads.
Why this matters
Performance issues directly impact user engagement and conversion rates.
headings: [map[key:node label:Element subItemsHeading:map[key:extra] valueType:node] map[granularity:0.001 key:score label:Layout shift score subItemsHeading:map[key:cause valueType:text] valueType:numeric]]
items: [map[node:map[type:text value:Total] score:0.8586719999999999] map[node:map[boundingRect:map[bottom:4228 height:3786 left:0 right:1350 top:442 width:1350] lhId:page-33-ARTICLE nodeLabel:ACM ELECTIONS
Vote in the 2026 ACM General Election - Ballots Due by 22 May at … path:1,HTML,1,BODY,14,DIV,1,DIV,0,ARTICLE selector:body > div#main > div#maincontent > article#SkipTarget snippet:<article class="has-edit-button" id="SkipTarget" tabindex="-1"> type:node] score:0.645415 subItems:map[items:[map[cause:Web font extra:map[type:url value:https://fonts.gstatic.com/s/robotocondensed/v31/ieVl2ZhZI2eCN5jzbjEETS9weq8-19K7DQk6YvM.woff2]] map[cause:Web font extra:map[type:url value:https://fonts.gstatic.com/s/robotocondensed/v31/ieVl2ZhZI2eCN5jzbjEETS9weq8-19K7DQk6YvM.woff2]] map[cause:Web font extra:map[type:url value:https://fonts.gstatic.com/s/robotocondensed/v31/ieVl2ZhZI2eCN5jzbjEETS9weq8-19K7DQk6YvM.woff2]] map[cause:Web font extra:map[type:url value:https://fonts.gstatic.com/s/robotocondensed/v31/ieVj2ZhZI2eCN5jzbjEETS9weq8-19eLDwM9QPFUew.woff2]] map[cause:Web font extra:map[type:url value:https://fonts.gstatic.com/s/robotocondensed/v31/ieVj2ZhZI2eCN5jzbjEETS9weq8-19eLDwM9QPFUew.woff2]] map[cause:Web font extra:map[type:url value:https://fonts.gstatic.com/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2]]] type:subitems]] map[node:map[boundingRect:map[bottom:4228 height:4091 left:0 right:1350 top:137 width:1350] lhId:page-38-DIV nodeLabel:Previous
A New Era for Computing Research
ACM Transitions to Full Open Access
… path:1,HTML,1,BODY,14,DIV selector:body > div#main snippet:<div id="main"> type:node] score:0.210776 subItems:map[items:[map[cause:Web font extra:map[type:url value:https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2]]] type:subitems]] map[node:map[boundingRect:map[bottom:650 height:59 left:500 right:1231 top:591 width:731] lhId:page-32-P nodeLabel:On 16 April, ACM Professional Members in good standing as of 1 April 2026 were … path:1,HTML,1,BODY,14,DIV,1,DIV,0,ARTICLE,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,1,DIV,0,DIV,2,DIV,1,P selector:div.medium-8 > div.text-wrap > div.dek > p snippet:<p> type:node] score:0.001905 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:1199 height:158 left:119 right:357 top:1041 width:238] lhId:page-4-IMG nodeLabel:Image button linking to Publications section path:1,HTML,1,BODY,14,DIV,1,DIV,0,ARTICLE,0,DIV,0,DIV,0,DIV,2,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,2,A,0,IMG selector:div.row > div.medium-12 > a.js-no-link-icon > img snippet:<img src="/binaries/ctaimagelarge/content/gallery/acm/ctas/og-publications.jpg" alt="Image button linking to Publications section"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:687 height:205 left:119 right:468 top:482 width:349] lhId:page-10-IMG nodeLabel:2026 ACM General Election path:1,HTML,1,BODY,14,DIV,1,DIV,0,ARTICLE,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,A,0,IMG selector:div.row > div.medium-4 > a.js-no-link-icon > img snippet:<img src="/binaries/ctaimagelarge/content/gallery/acm/ctas/general_election.jpg" alt="2026 ACM General Election" style="margin-bottom:0;padding-bottom:0;"> type:node] score:0.000576]]
Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.
Why this matters
Performance issues directly impact user engagement and conversion rates.
Consider setting font-display to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with font metric overrides.
Why this matters
Performance issues directly impact user engagement and conversion rates.
A forced reflow occurs when JavaScript queries geometric properties (such as offsetWidth) after styles have been invalidated by a change to the DOM state. This can result in poor performance. Learn more about forced reflows and possible mitigations.
Why this matters
Performance issues directly impact user engagement and conversion rates.
headings: [map[key:source label:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:25.794 source:map[column:67466 line:2 type:source-location url:https://consent.cookiebot.com/uc.js urlProvider:network]]]
headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:368.225 source:map[type:text value:[unattributed]]] map[reflowTime:12.919 source:map[column:3001 line:13 type:source-location url:https://www.acm.org/js/acm.js?antiCache=1744907005937 urlProvider:network]] map[reflowTime:46.441 source:map[column:31671 line:24 type:source-location url:https://www.acm.org/js/acm.js?antiCache=1744907005937 urlProvider:network]] map[reflowTime:36.876 source:map[column:5009 line:25 type:source-location url:https://www.acm.org/js/acm.js?antiCache=1744907005937 urlProvider:network]] map[reflowTime:1.061 source:map[column:6429 line:25 type:source-location url:https://www.acm.org/js/acm.js?antiCache=1744907005937 urlProvider:network]] map[reflowTime:9.28 source:map[column:3948 line:13 type:source-location url:https://www.acm.org/js/acm.js?antiCache=1744907005937 urlProvider:network]] map[reflowTime:47.422 source:map[column:2979 line:13 type:source-location url:https://www.acm.org/js/acm.js?antiCache=1744907005937 urlProvider:network]] map[reflowTime:25.794 source:map[column:82434 line:1 type:source-location url:https://consent.cookiebot.com/uc.js urlProvider:network]] map[reflowTime:68.434 source:map[column:3934 line:13 type:source-location url:https://www.acm.org/js/acm.js?antiCache=1744907005937 urlProvider:network]] map[reflowTime:0.702 source:map[column:12691 line:24 type:source-location url:https://www.acm.org/js/acm.js?antiCache=1744907005937 urlProvider:network]]]
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.
| URL | Resource Size | Est Savings | |
|---|---|---|---|
A New Era for Computing Research
ACM Transitions to Full Open Access
ACM is tr… div#slick-slide24 > div > div.slide > div.acm-banner-container | www.acm.org/binaries/bannerlarge/content/gallery/acm/banners/acm-open | 1.5 MiB | 1.3 MiB |
Image button linking to Awards section div.row > div.medium-12 > a.js-no-link-icon > img | www.acm.org/binaries/ctaimagelarge/content/gallery/acm/ctas/og-awards.jpg | 529.9 KiB | 524.7 KiB |
Image button linking to Publich Policy section div.row > div.medium-12 > a.js-no-link-icon > img | www.acm.org/binaries/ctaimagelarge/content/gallery/acm/ctas/og-public-policy.jpg | 510.7 KiB | 505.5 KiB |
Image button linking to Conferences section div.row > div.medium-12 > a.js-no-link-icon > img | www.acm.org/binaries/ctaimagelarge/content/gallery/acm/ctas/og-conferences.jpg | 483.5 KiB | 478.0 KiB |
Image button linking to Publications section div.row > div.medium-12 > a.js-no-link-icon > img | www.acm.org/binaries/ctaimagelarge/content/gallery/acm/ctas/og-publications.jpg | 471.3 KiB | 466.2 KiB |
Image button linking to Education section div.row > div.medium-12 > a.js-no-link-icon > img | www.acm.org/binaries/ctaimagelarge/content/gallery/acm/ctas/og-education.jpg | 445.8 KiB | 440.2 KiB |
ACM Awards
Celebrating Innovation and Lasting Contributions
ACM recognizes exc… div#slick-slide23 > div > div.slide > div.acm-banner-container | /binaries/bannerlarge/content/gallery/acm/banners/7_award... | 588.9 KiB | 437.4 KiB |
Image button linking to Membership section div.row > div.medium-12 > a.js-no-link-icon > img | www.acm.org/binaries/ctaimagelarge/content/gallery/acm/ctas/og-membership.jpg | 434.0 KiB | 428.8 KiB |
Image button linking to Special Interest Groups section div.row > div.medium-12 > a.js-no-link-icon > img | www.acm.org/binaries/ctaimagelarge/content/gallery/acm/ctas/og-sigs.jpg | 419.6 KiB | 414.1 KiB |
In-Depth Interviews
ACM ByteCast
ACM's podcast series at the intersection of c… div#slick-slide04 > div > div.slide > div.acm-banner-container | /binaries/bannerlarge/content/gallery/acm/banners/carouse... | 379.1 KiB | 263.4 KiB |
2026 ACM General Election div.row > div.medium-4 > a.js-no-link-icon > img | www.acm.org/binaries/ctaimagelarge/content/gallery/acm/ctas/general_election.jpg | 212.0 KiB | 200.8 KiB |
acm symbol div.row > div.medium-4 > a.js-no-link-icon > img | www.acm.org/binaries/ctaimagelarge/content/gallery/acm/ctas/acm-sym-branded.jpg | 203.2 KiB | 192.0 KiB |
What's Happening in and Around ACM
ACM Updates
The latest goings-on in the wor… div#slick-slide01 > div > div.slide > div.acm-banner-container | /binaries/bannerlarge/content/gallery/acm/banners/generic... | 258.8 KiB | 143.2 KiB |
Newsmakers
ACM Members in the News
Members whose achievements have made the he… div#slick-slide02 > div > div.slide > div.acm-banner-container | /binaries/bannerlarge/content/gallery/acm/banners/generic... | 257.1 KiB | 141.5 KiB |
Image button linking to Diversity Equity & Inclusion section div.row > div.medium-12 > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/diversit... | 123.4 KiB | 117.9 KiB |
div.row > div.medium-12 > a.js-no-link-icon > img div.row > div.medium-12 > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/cope-cod... | 114.9 KiB | 105.0 KiB |
2025 ACM Prize recipient Matei Zaharia div.row > div.medium-4 > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/people/m... | 107.4 KiB | 96.6 KiB |
Association for Computing Machinery
Advancing Computing as a Science & Professi… div.slick-slide > div > div.slide > div.acm-banner-container | /binaries/bannerlarge/content/gallery/acm/banners/2_gener... | 248.1 KiB | 96.5 KiB |
Focused Lectures On Demand
ACM TechTalks
Talks by industry experts, ACM award … div#slick-slide03 > div > div.slide > div.acm-banner-container | /binaries/bannerlarge/content/gallery/acm/banners/carouse... | 208.5 KiB | 92.9 KiB |
Ricardo Baeza-Yates div.row > div.medium-4 > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/people/r... | 97.4 KiB | 86.6 KiB |
Message from ACM President Yannis Ioannidis about ACM's Transition to OA and Re… div.row > div.medium-4 > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/publicat... | 93.1 KiB | 82.3 KiB |
Communications of the ACM
The Most Trusted Source
The leading online and print… div#slick-slide22 > div > div.slide > div.acm-banner-container | /binaries/bannerlarge/content/gallery/acm/banners/carouse... | 230.8 KiB | 79.3 KiB |
Ambassador for ACM Program div.row > div.medium-12 > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/ambassad... | 88.8 KiB | 79.0 KiB |
ACM Transitions to Full Open Access div.row > div.medium-4 > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/publicat... | 83.0 KiB | 72.2 KiB |
ACM A.M. Turing Award laureate Michael O. Rabin div.row > div.medium-4 > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/people/m... | 73.1 KiB | 62.2 KiB |
ACM Queue div.row > div.medium-4 > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/publicat... | 70.3 KiB | 59.1 KiB |
div.row > div.medium-4 > a.js-no-link-icon > img div.row > div.medium-4 > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/membersh... | 57.5 KiB | 46.3 KiB |
Federal Funding of Academic Research div.row > div.medium-12 > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/publicat... | 51.4 KiB | 41.9 KiB |
ACM Digital Library
Research, Discovery and Networking
The full-text collectio… div#slick-slide21 > div > div.slide > div.acm-banner-container | /binaries/bannerlarge/content/gallery/acm/banners/carouse... | 190.2 KiB | 38.6 KiB |
techpacks div.row > div.medium-12 > a.js-no-link-icon > img | www.acm.org/binaries/ctaimagelarge/content/gallery/acm/ctas/techpacks.jpg | 32.4 KiB | 26.5 KiB |
Each subpart has specific improvement strategies. Ideally, most of the LCP time should be spent on loading the resources, not within delays.
Why this matters
Performance issues directly impact user engagement and conversion rates.
headings: [map[key:label label:Subpart valueType:text] map[key:duration label:Duration valueType:ms]]
items: [map[duration:169.07 label:Time to first byte subpart:timeToFirstByte] map[duration:2777.124 label:Resource load delay subpart:resourceLoadDelay] map[duration:55.306 label:Resource load duration subpart:resourceLoadDuration] map[duration:253.766 label:Element render delay subpart:elementRenderDelay]]
lhId: page-30-DIV
nodeLabel: Association for Computing Machinery
Advancing Computing as a Science & Professi…
path: 1,HTML,1,BODY,14,DIV,0,DIV,0,DIV,0,DIV,0,DIV,1,DIV,0,DIV,1,DIV,0,DIV,0,DIV,0,DIV
selector: div#slick-slide20 > div > div.slide > div.acm-banner-container
snippet: <div class="acm-banner-container" style="background: url("/binaries/bannerlarge/content/gallery/acm/banners/2_generi…");">
Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading
Why this matters
Performance issues directly impact user engagement and conversion rates.
lhId: page-30-DIV
nodeLabel: Association for Computing Machinery
Advancing Computing as a Science & Professi…
path: 1,HTML,1,BODY,14,DIV,0,DIV,0,DIV,0,DIV,0,DIV,1,DIV,0,DIV,1,DIV,0,DIV,0,DIV,0,DIV
selector: div#slick-slide20 > div > div.slide > div.acm-banner-container
snippet: <div class="acm-banner-container" style="background: url("/binaries/bannerlarge/content/gallery/acm/banners/2_generi…");">
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
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.
| URL | Transfer Size | Duration |
|---|---|---|
| consent.cookiebot.com/uc.js | 35.7 KiB | 419 ms |
| www.acm.org/js/analytics.js?= | 11.3 KiB | 180 ms |
| www.acm.org/js/webfontloader.js | 626 B | |
| www.acm.org/js/classList.js | 951 B | 140 ms |
| cdnjs.cloudflare.com/ajax/libs/slick-carousel/1.9.0/slick-theme.min.css | 1.2 KiB | 304 ms |
| cdnjs.cloudflare.com/ajax/libs/slick-carousel/1.9.0/slick.css | 1.1 KiB | 304 ms |
| www.acm.org/css/acm.css?antiCache=1744907005937 | 39.4 KiB | 220 ms |
| www.acm.org/js/modernizr.js | 4.8 KiB | 140 ms |
| www.acm.org/css/acm-blessed1.css?z=262 | 35.2 KiB | 220 ms |
These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.
Redirects introduce additional delays before the page can be loaded. Learn how to avoid page redirects.
Why this matters
Performance issues directly impact user engagement and conversion rates.
Estimated savings: 263 ms
| URL | Time Spent |
|---|---|
| acm.org/ | 263 ms |
| www.acm.org/ | 0.0 ms |
These are the largest layout shifts observed on the page. Each table item represents a single layout shift, and shows the element that shifted the most. Below each item are possible root causes that led to the layout shift. Some of these layout shifts may not be included in the CLS metric value due to windowing. Learn how to improve CLS
Why this matters
Performance issues directly impact user engagement and conversion rates.
| Element | Layout shift score |
|---|---|
ACM ELECTIONS
Vote in the 2026 ACM General Election - Ballots Due by 22 May at … body > div#main > div#maincontent > article#SkipTarget | 0.645 |
Previous
A New Era for Computing Research
ACM Transitions to Full Open Access
… body > div#main | 0.211 |
On 16 April, ACM Professional Members in good standing as of 1 April 2026 were … div.medium-8 > div.text-wrap > div.dek > p | 0.002 |
2026 ACM General Election div.row > div.medium-4 > a.js-no-link-icon > img | 0.001 |
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
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.
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: 80 ms 101.8 KiB
| URL | Transfer Size | Est Savings |
|---|---|---|
| www.acm.org/css/acm.css?antiCache=1744907005937 | 39.2 KiB | 35.9 KiB |
| www.acm.org/css/acm-blessed1.css?z=262 | 34.9 KiB | 33.1 KiB |
| /assets/new_embed-2552d8d62d9c60f59b3b11a5d083d1ebd090c72... | 33.2 KiB | 32.8 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: 560 ms 558.3 KiB
| URL | Transfer Size | Est Savings |
|---|---|---|
| www.googletagmanager.com/gtm.js?id=GTM-M3TS27JG | 111.4 KiB | 71.7 KiB |
| www.googletagmanager.com/gtm.js?id=GTM-W4CLDXL3 | 111.4 KiB | 71.7 KiB |
| www.googletagmanager.com/gtm.js?id=GTM-5G4WDJNB | 111.4 KiB | 71.6 KiB |
| s.swiftypecdn.com/install/v2/st.js | 111.6 KiB | 69.3 KiB |
| www.googletagmanager.com/gtm.js?id=GTM-5BVDRXH | 121.5 KiB | 68.3 KiB |
| www.googletagmanager.com/gtag/js?id=G-RX448GM2EK&cx=c>m=4e64h1 | 165.1 KiB | 66.3 KiB |
| www.googletagmanager.com/gtag/js?id=AW-968097012&cx=c>m=4e64h1 | 145.5 KiB | 64.6 KiB |
| www.acm.org/js/acm.js?antiCache=1744907005937 | 76.6 KiB | 49.9 KiB |
| /9bb7fc8b-05a2-4292-85e6-45213b19c5ff/cc.js?renew=false&r... | 104.7 KiB | 25.0 KiB |
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to minimize main-thread work
Why this matters
Performance issues directly impact user engagement and conversion rates.
| Category | Time Spent |
|---|---|
| Script Evaluation | 914 ms |
| Style & Layout | 809 ms |
| Other | 390 ms |
| Parse HTML & CSS | 150 ms |
| Script Parsing & Compilation | 94 ms |
| Rendering | 77 ms |
| Garbage Collection | 13 ms |
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 reason | Failure type |
|---|---|
| The page has an unload handler in the main frame. | Actionable |
Minifying CSS files can reduce network payload sizes. Learn how to minify CSS.
Why this matters
Performance issues directly impact user engagement and conversion rates.
Estimated savings: 0.0 ms 13.9 KiB
| URL | Transfer Size | Est Savings |
|---|---|---|
| www.acm.org/css/acm-blessed1.css?z=262 | 35.2 KiB | 7.4 KiB |
| www.acm.org/css/acm.css?antiCache=1744907005937 | 39.4 KiB | 6.5 KiB |
Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.
Why this matters
Performance issues directly impact user engagement and conversion rates.
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 | |
|---|---|
artifact-badges.jpg li.infonav__ctaList > div.infonav__ctaList-cta > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/publicat... |
Regional Councils.jpg li.infonav__ctaList > div.infonav__ctaList-cta > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/regional... |
ACM History li.infonav__ctaList > div.infonav__ctaList-cta > a.js-no-link-icon > img | www.acm.org/binaries/ctaimagelarge/content/gallery/acm/ctas/history.jpg |
skills-bundle.jpg li.infonav__ctaList > div.infonav__ctaList-cta > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/learning... |
ACM membership FAQ li.infonav__ctaList > div.infonav__ctaList-cta > a.js-no-link-icon > img | www.acm.org/binaries/ctaimagelarge/content/gallery/acm/ctas/membership-faq.jpg |
Ambassador for ACM Program li.infonav__ctaList > div.infonav__ctaList-cta > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/ambassad... |
Publish your work li.infonav__ctaList > div.infonav__ctaList-cta > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/publish-... |
practical_content_journals.jpg li.infonav__ctaList > div.infonav__ctaList-cta > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/practica... |
Join an ACM SIG li.infonav__ctaList > div.infonav__ctaList-cta > a.js-no-link-icon > img | www.acm.org/binaries/ctaimagelarge/content/gallery/acm/ctas/join-an-acm-sig.jpg |
promoting-sharing.jpg li.infonav__ctaList > div.infonav__ctaList-cta > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/publicat... |
Find a SIG Conference li.infonav__ctaList > div.infonav__ctaList-cta > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/find-a-s... |
promoting-sharing.jpg li.infonav__ctaList > div.infonav__ctaList-cta > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/publicat... |
chapter_box.jpg li.infonav__ctaList > div.infonav__ctaList-cta > a.js-no-link-icon > img | www.acm.org/binaries/ctaimagelarge/content/gallery/acm/ctas/chapter_box.jpg |
li.infonav__ctaList > div.infonav__ctaList-cta > a.js-no-link-icon > img li.infonav__ctaList > div.infonav__ctaList-cta > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/chapters... |
li.infonav__ctaList > div.infonav__ctaList-cta > a.js-no-link-icon > img li.infonav__ctaList > div.infonav__ctaList-cta > a.js-no-link-icon > img | www.acm.org/binaries/ctaimagelarge/content/gallery/acm/ctas/start-a-chapter.jpg |
2025 ACM A.M. Turing Award recipients Charles H. Bennett and Gilles Brassard li.infonav__ctaList > div.infonav__ctaList-cta > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/awards/t... |
2025 ACM Prize recipient Matei Zaharia li.infonav__ctaList > div.infonav__ctaList-cta > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/people/m... |
Ricardo Baeza-Yates li.infonav__ctaList > div.infonav__ctaList-cta > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/people/r... |
Image of webinar panel li.infonav__ctaList > div.infonav__ctaList-cta > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/educatio... |
Image of Angelica Lo Duca li.infonav__ctaList > div.infonav__ctaList-cta > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/people/a... |
Image of Russ Cox li.infonav__ctaList > div.infonav__ctaList-cta > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/people/r... |
Image of Peter Stone li.infonav__ctaList > div.infonav__ctaList-cta > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/people/p... |
Image of Monica Bertagnolli li.infonav__ctaList > div.infonav__ctaList-cta > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/people/m... |
Image of Ray Eitel-Porter li.infonav__ctaList > div.infonav__ctaList-cta > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/people/r... |
TechBrief on Buying Versus Building LLMs li.infonav__ctaList > div.infonav__ctaList-cta > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/public-p... |
tpc-remote-proctoring-software.jpg li.infonav__ctaList > div.infonav__ctaList-cta > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/public-p... |
europetpc-diggreencerts-stmt.jpg li.infonav__ctaList > div.infonav__ctaList-cta > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/public-p... |
Image with the text, li.infonav__ctaList > div.infonav__ctaList-cta > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/diversit... |
Image with the text, li.infonav__ctaList > div.infonav__ctaList-cta > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/diversit... |
Image of different skin tone hands in a high-five circle li.infonav__ctaList > div.infonav__ctaList-cta > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/diversit... |
2026 ACM General Election div.row > div.medium-4 > a.js-no-link-icon > img | www.acm.org/binaries/ctaimagelarge/content/gallery/acm/ctas/general_election.jpg |
ACM Transitions to Full Open Access div.row > div.medium-4 > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/publicat... |
2025 ACM Prize recipient Matei Zaharia div.row > div.medium-4 > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/people/m... |
acm symbol div.row > div.medium-4 > a.js-no-link-icon > img | www.acm.org/binaries/ctaimagelarge/content/gallery/acm/ctas/acm-sym-branded.jpg |
Ricardo Baeza-Yates div.row > div.medium-4 > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/people/r... |
ACM A.M. Turing Award laureate Michael O. Rabin div.row > div.medium-4 > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/people/m... |
Message from ACM President Yannis Ioannidis about ACM's Transition to OA and Re… div.row > div.medium-4 > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/publicat... |
ACM Transitions to Full Open Access div.row > div.medium-4 > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/publicat... |
2025 ACM Prize recipient Matei Zaharia div.row > div.medium-4 > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/people/m... |
acm symbol div.row > div.medium-4 > a.js-no-link-icon > img | www.acm.org/binaries/ctaimagelarge/content/gallery/acm/ctas/acm-sym-branded.jpg |
Ricardo Baeza-Yates div.row > div.medium-4 > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/people/r... |
ACM A.M. Turing Award laureate Michael O. Rabin div.row > div.medium-4 > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/people/m... |
Message from ACM President Yannis Ioannidis about ACM's Transition to OA and Re… div.row > div.medium-4 > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/publicat... |
ACM Transitions to Full Open Access div.row > div.medium-4 > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/publicat... |
Image button linking to Publications section div.row > div.medium-12 > a.js-no-link-icon > img | www.acm.org/binaries/ctaimagelarge/content/gallery/acm/ctas/og-publications.jpg |
Image button linking to Conferences section div.row > div.medium-12 > a.js-no-link-icon > img | www.acm.org/binaries/ctaimagelarge/content/gallery/acm/ctas/og-conferences.jpg |
Image button linking to Special Interest Groups section div.row > div.medium-12 > a.js-no-link-icon > img | www.acm.org/binaries/ctaimagelarge/content/gallery/acm/ctas/og-sigs.jpg |
Image button linking to Membership section div.row > div.medium-12 > a.js-no-link-icon > img | www.acm.org/binaries/ctaimagelarge/content/gallery/acm/ctas/og-membership.jpg |
Image button linking to Awards section div.row > div.medium-12 > a.js-no-link-icon > img | www.acm.org/binaries/ctaimagelarge/content/gallery/acm/ctas/og-awards.jpg |
Image button linking to Education section div.row > div.medium-12 > a.js-no-link-icon > img | www.acm.org/binaries/ctaimagelarge/content/gallery/acm/ctas/og-education.jpg |
Image button linking to Diversity Equity & Inclusion section div.row > div.medium-12 > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/diversit... |
Image button linking to Publich Policy section div.row > div.medium-12 > a.js-no-link-icon > img | www.acm.org/binaries/ctaimagelarge/content/gallery/acm/ctas/og-public-policy.jpg |
acm symbol div.row > div.medium-4 > a.js-no-link-icon > img | www.acm.org/binaries/ctaimagelarge/content/gallery/acm/ctas/acm-sym-branded.jpg |
Federal Funding of Academic Research div.row > div.medium-12 > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/publicat... |
ACM Queue div.row > div.medium-4 > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/publicat... |
Ambassador for ACM Program div.row > div.medium-12 > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/ambassad... |
div.row > div.medium-12 > a.js-no-link-icon > img div.row > div.medium-12 > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/cope-cod... |
techpacks div.row > div.medium-12 > a.js-no-link-icon > img | www.acm.org/binaries/ctaimagelarge/content/gallery/acm/ctas/techpacks.jpg |
div.row > div.medium-4 > a.js-no-link-icon > img div.row > div.medium-4 > a.js-no-link-icon > img | /binaries/ctaimagelarge/content/gallery/acm/ctas/membersh... |
ACM Logo div > div > div.logo_social_group > img | www.acm.org/binaries/content/gallery/acm/logos/logo_footer_acm.png |
ACM Logo div.logo-section > div.navbar-header > a.navbar-brand > img.img-responsive | www.acm.org/binaries/content/gallery/global/top-menu/acm_logo_tablet.svg |
Facebook logo ul.footer__social > li > a.js-no-link-icon > img | www.acm.org/binaries/content/gallery/acm/social-media/icon_facebook.png |
Twitter logo ul.footer__social > li > a.js-no-link-icon > img | www.acm.org/binaries/content/gallery/acm/social-media/icon_x_twitter.png |
LinkedIn logo ul.footer__social > li > a.js-no-link-icon > img | www.acm.org/binaries/content/gallery/acm/social-media/icon_linkedin.png |
Reddit logo ul.footer__social > li > a.js-no-link-icon > img | www.acm.org/binaries/content/gallery/acm/social-media/icon_reddit.png |
YouTube logo ul.footer__social > li > a.js-no-link-icon > img | www.acm.org/binaries/content/gallery/acm/social-media/icon_youtube.png |
Instagram ul.footer__social > li > a.js-no-link-icon > img | www.acm.org/binaries/content/gallery/acm/social-media/icon_instagram.png |
Flickr ul.footer__social > li > a.js-no-link-icon > img | www.acm.org/binaries/content/gallery/acm/social-media/icon_flickr.png |
Mastodon ul.footer__social > li > a.js-no-link-icon > img | www.acm.org/binaries/content/gallery/acm/social-media/icon_mastodon.png |
Bluesky ul.footer__social > li > a.js-no-link-icon > img | www.acm.org/binaries/content/gallery/acm/social-media/icon_bluesky.png |
WeChat ul.footer__social > li > a.js-no-link-icon > img | www.acm.org/binaries/content/gallery/acm/social-media/icon_wechat.png |
Substack ul.footer__social > li > a.js-no-link-icon > img | www.acm.org/binaries/content/gallery/acm/social-media/icon_substack.png |
Email ul.footer__social > li > a.js-no-link-icon > img | www.acm.org/binaries/content/gallery/acm/social-media/icon_mail.png |
More information about the performance of your application. These numbers don't directly affect the Performance score.
●Optimize DOM size
●Modern HTTP
●Optimize viewport for mobile
●Minify JavaScript
●User Timing marks and measures 5 user timings
●JavaScript execution time 0.9 s
●Avoid long main-thread tasks 7 long tasks found
●Network Requests
●Network Round Trip Times 40 ms
●Server Backend Latencies 120 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 130 ms
○INP breakdown
○Avoid non-composited animations
84
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.
Names and labels
Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.
Why this matters
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
li.infonav__ctaList > div.infonav__ctaList-cta > a.js-no-link-icon > img li.infonav__ctaList > div.infonav__ctaList-cta > a.js-no-link-icon > img |
li.infonav__ctaList > div.infonav__ctaList-cta > a.js-no-link-icon > img li.infonav__ctaList > div.infonav__ctaList-cta > a.js-no-link-icon > img |
Screen reader users rely on frame titles to describe the contents of frames. Learn more about frame titles.
Why this matters
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
div.medium-12 > div.image-video-container > div.video-wrapper > iframe#ytplayer div.medium-12 > div.image-video-container > div.video-wrapper > iframe#ytplayer |
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 |
|---|
ul.infonav > li.infonav__ctaList > div.infonav__ctaList-cta > a.js-no-link-icon ul.infonav > li.infonav__ctaList > div.infonav__ctaList-cta > a.js-no-link-icon |
ul.infonav > li.infonav__ctaList > div.infonav__ctaList-cta > a.js-no-link-icon ul.infonav > li.infonav__ctaList > div.infonav__ctaList-cta > a.js-no-link-icon |
div.row > div.medium-12 > h2.text-center > a div.row > div.medium-12 > h2.text-center > a |
div.row > div.medium-12 > h2.text-center > a div.row > div.medium-12 > h2.text-center > a |
div.row > div.medium-12 > h2.text-center > a div.row > div.medium-12 > h2.text-center > a |
div.row > div.medium-12 > h2.text-center > a div.row > div.medium-12 > h2.text-center > a |
div.row > div.medium-12 > h2.text-center > a div.row > div.medium-12 > h2.text-center > a |
div.row > div.medium-12 > h2.text-center > a div.row > div.medium-12 > h2.text-center > a |
div.row > div.medium-12 > h2.text-center > a div.row > div.medium-12 > h2.text-center > a |
div.row > div.medium-12 > h2.text-center > a div.row > div.medium-12 > h2.text-center > a |
div.cta > div.row > div.medium-12 > a.js-no-link-icon div.cta > div.row > div.medium-12 > a.js-no-link-icon |
div.cta > div.row > div.medium-4 > a.js-no-link-icon div.cta > div.row > div.medium-4 > a.js-no-link-icon |
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.
Best practices
Disabling zooming is problematic for users with low vision who rely on screen magnification to properly see the contents of a web page. Learn more about the viewport meta tag.
Why this matters
Informational: a Permissions-Policy directive showing feature -> allowed origins.
Source: MDN Permissions-Policy
| Failing Elements |
|---|
head > meta head > meta |
Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.
Why this matters
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
About ACM div.footer-nav > ul.footer-nav-lists > li > a |
Volunteer div.footer-nav > ul.footer-nav-lists > li > a |
Join ACM div.footer-nav > ul.footer-nav-lists > li > a |
Renew My Membership div.footer-nav > ul.footer-nav-lists > li > a |
Membership Options div.footer-nav > ul.footer-nav-lists > li > a |
Membership Benefits div.footer-nav > ul.footer-nav-lists > li > a |
MyACM Sign In div.footer-nav > ul.footer-nav-lists > li > a |
About Publications div.footer-nav > ul.footer-nav-lists > li > a |
Digital Library div.footer-nav > ul.footer-nav-lists > li > a |
Submit a Paper div.footer-nav > ul.footer-nav-lists > li > a |
Advertise with ACM div.footer-nav > ul.footer-nav-lists > li > a |
Chapter Admin Interface div.footer-nav > ul.footer-nav-lists > li > a |
Chapter Activities Calendar div.footer-nav > ul.footer-nav-lists > li > a |
Start a Chapter div.footer-nav > ul.footer-nav-lists > li > a |
ACM's Code of Ethics div.footer-nav > ul.footer-nav-lists > li > a |
Enforcement Procedures div.footer-nav > ul.footer-nav-lists > li > a |
ACM Media Center div.footer-nav > ul.footer-nav-lists > li > a |
Advertise with ACM div.footer-nav > ul.footer-nav-lists > li > a |
These items highlight common accessibility best practices.
○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
●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
●`[role]` values are valid
●`[aria-*]` attributes have valid values
●`[aria-*]` attributes are valid and not misspelled
●Buttons have an accessible name
●Input buttons have discernible text.
●Form elements have associated labels
●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
●Background and foreground colors have a sufficient contrast ratio
●Document has a `<title>` element
●`<html>` element has a `[lang]` attribute
●`<html>` element has a valid value for its `[lang]` attribute
●Links are distinguishable without relying on color.
●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
●`[lang]` attributes have a valid value
●Heading elements appear in a sequentially-descending order
●Document has a main landmark.
●Deprecated ARIA roles were not used
●All heading elements contain content.
●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 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
○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
○`<input type="image">` elements have `[alt]` text
○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.
○`<video>` elements contain a `<track>` element with `[kind="captions"]`
○Tables have different content in the summary attribute and `<caption>`.
○Uses ARIA roles only on compatible elements
○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.
81
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 / Warning | Source |
|---|---|
| AttributionReporting | |
| SharedStorage | |
| StorageType.persistent is deprecated. Please use standardized navigator.storage instead. | |
| Fledge | |
| Unload event listeners are deprecated and will be removed. | consent.cookiebot.com/uc.js line 1, col 17119 |
●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 browser errors logged to the console
●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 clickjacking with XFO or CSP
●Mitigate DOM-based XSS with Trusted Types
●Detected JavaScript libraries
●Page has valid source maps
○Redirects HTTP traffic to HTTPS
75
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
Meta descriptions may be included in search results to concisely summarize page content. Learn more about the meta description.
Why this matters
Performance issues directly impact user engagement and conversion rates.
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 destination | Link Text |
|---|---|
| www.acm.org/publications/openaccess | Read More |
| www.acm.org/about-acm | Learn More |
| www.acm.org/publications/openaccess | Read More |
| www.acm.org/about-acm | Learn More |
| www.acm.org/publications/openaccess | Read More |
Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.
Why this matters
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
li.infonav__ctaList > div.infonav__ctaList-cta > a.js-no-link-icon > img li.infonav__ctaList > div.infonav__ctaList-cta > a.js-no-link-icon > img |
li.infonav__ctaList > div.infonav__ctaList-cta > a.js-no-link-icon > img li.infonav__ctaList > div.infonav__ctaList-cta > a.js-no-link-icon > img |
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
●Page has successful HTTP status code
●Links are crawlable
●robots.txt is valid
●Document has a valid `hreflang`
○Document has a valid `rel=canonical`