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Lighthouse Mobile

· 0 checks — Mobile Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.
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Detailed Report

Audit breakdown by category with detailed findings.

24

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
/USATF/media/USATF/Banners-Advertisements/2025_Summer_Mer...86400.0 s12.9 MiB
/USATF/media/USATF/BioPhotos/Athlete Bios/AliciaMonson-3-...86400.0 s478.5 KiB
/signals/config/990614502211933?v=2.9.385&r=stable&domain...1200.0 s121.7 KiB
cdn.curator.io/5.0/curator.embed.js0.0 ms104.2 KiB
/quality-65-cache-1-2-25/USATF/media/USATF/Event%20Logos/...3600.0 s117.7 KiB
connect.facebook.net/en_US/fbevents.js1200.0 s105.1 KiB
/quality-65-cache-1-2-25/USATF/media/USATF/Event%20Logos/...3600.0 s114.9 KiB
/ext--jpeg-mode-crop-quality-65-cache-1-2-25-w-960-h-589/...3600.0 s104.3 KiB
cdn.ai12z.net/pkg/ai12z@latest/dist/esm/index-CjSLTZFw.js0.0 ms73.5 KiB
connect.facebook.net/en_US/bundle/sdk.js/1200.0 s79.1 KiB
cdn.ai12z.net/pkg/ai12z@latest/dist/esm/ai12z-category_2.entry.js0.0 ms66.7 KiB
cdn.ai12z.net/pkg/ai12z@latest/dist/esm/index-DrTyKvbY.js0.0 ms54.2 KiB
/mode-crop-quality-65-cache-1-2-25-w-960-h-589/USATF/medi...3600.0 s59.9 KiB
/mode-crop-quality-65-cache-1-2-25-w-960-h-589/USATF/medi...3600.0 s58.0 KiB
cdn.ai12z.net/pkg/ai12z@latest/dist/esm/ai12z-bot.entry.js0.0 ms42.8 KiB
cdn.ai12z.net/pkg/ai12z@latest/dist/esm/processCarouselData-CgoPoIF_.js0.0 ms41.2 KiB
/quality-65-cache-1-2-25/USATF/media/USATF/Event%20Logos/...3600.0 s42.9 KiB
/mode-crop-quality-65-cache-1-2-25-w-960-h-480/USATF/medi...3600.0 s42.2 KiB
pbs.twimg.com/media/HQwYEvgWIAEEnGO.jpg:medium604800.0 s330.3 KiB
pbs.twimg.com/media/HP7qoP1WoAAf3LU.jpg:medium604800.0 s293.8 KiB
cdn.ai12z.net/pkg/ai12z@latest/dist/esm/response-adapter-SyQT2Pr3.js0.0 ms28.4 KiB
/mode-crop-w-632-h-355-quality-65-format-jpg-cache-1-2-25...3600.0 s34.5 KiB
cdn.ai12z.net/pkg/ai12z@latest/dist/esm/parseHelper-B4cZLEeX.js0.0 ms25.9 KiB
/USATF/media/USATF/Banners-Advertisements/300x250-Michael...86400.0 s62.4 KiB
pbs.twimg.com/media/HPUPHnvbMAAD46b.jpg:medium604800.0 s249.2 KiB
www.usatf.org/USATF/media/USATF/Banners-Advertisements/300x250-JeromeAvery-3.jpg86400.0 s61.4 KiB
www.usatf.org/USATF/media/USATF/Banners-Advertisements/300x250-GabbyThomas-4.jpg86400.0 s57.9 KiB
pbs.twimg.com/media/HQwbBTJXsAAGi2p.jpg:medium604800.0 s222.1 KiB
/format-png-quality-65-cache-1-2-25/USATF/media/USATF/Def...3600.0 s26.0 KiB
pbs.twimg.com/media/HP3Yg8fW4AAtq4P.jpg:medium604800.0 s205.5 KiB
/USATF/media/USATF/BioPhotos/Athlete Bios/Rachel-Richeson...86400.0 s49.7 KiB
www.usatf.org/CMSTemplates/USATF/scripts/main-script.js?v=2786400.0 s49.5 KiB
pbs.twimg.com/media/HPUaFNAbMAA0hwM.jpg:medium604800.0 s190.2 KiB
/USATF/media/USATF/BioPhotos/Athlete Bios/2025_USATF_Head...86400.0 s44.5 KiB
/%3fmode-crop-w-640-h-640-quality-65-cache-1-2-25/USATF/m...3600.0 s21.1 KiB
/%3fmode-crop-w-640-h-640-quality-65-format-jpg-cache-1-2...3600.0 s20.1 KiB
/mode-crop-w-304-h-243-quality-65-cache-1-2-25/USATF/medi...3600.0 s19.7 KiB
www.usatf.org/cmstemplates/usatf/assets/swiper/package/swiper-bundle.min.js86400.0 s39.3 KiB
www.google-analytics.com/analytics.js7200.0 s20.9 KiB
cdn.curator.io/5.0/curator.embed.css0.0 ms14.6 KiB
pbs.twimg.com/media/HQQlqfgX0AAefFC.jpg:medium604800.0 s146.3 KiB
www.usatf.org/CMSTemplates/USATF/styles/site.css?v=2886400.0 s35.4 KiB
/mode-crop-w-304-h-243-quality-65-cache-1-2-25/USATF/medi...3600.0 s17.5 KiB
pbs.twimg.com/media/HPeKOHqWsAAHgVH.jpg:medium604800.0 s137.2 KiB
/USATF/media/USATF/BioPhotos/Athlete Bios/2024_US-OLY-Tri...86400.0 s34.1 KiB
pbs.twimg.com/media/HQQm898XkAAClch.jpg:medium604800.0 s130.7 KiB
/mode-crop-w-304-h-243-quality-65-cache-1-2-25/USATF/medi...3600.0 s15.8 KiB
tools.luckyorange.com/core/lo.js?site-id=a4790d4a3600.0 s14.3 KiB
/mode-crop-w-302-h-170-quality-65-format-jpg-cache-1-2-25...3600.0 s14.2 KiB
/mode-crop-w-302-h-170-quality-65-format-jpg-cache-1-2-25...3600.0 s13.9 KiB
cdn.ai12z.net/pkg/ai12z@latest/dist/esm/utils-qg8o2dBJ.js0.0 ms10.8 KiB
/mode-crop-w-304-h-243-quality-65-cache-1-2-25/USATF/medi...3600.0 s13.5 KiB
/mode-crop-w-302-h-170-quality-65-cache-1-2-25/USATF/medi...3600.0 s12.3 KiB
cdn.ai12z.net/pkg/ai12z@latest/dist/esm/chat-avatar_6.entry.js0.0 ms9.4 KiB
/mode-crop-w-302-h-170-quality-65-cache-1-2-25/USATF/medi...3600.0 s11.6 KiB
cdn.ai12z.net/assets/bot/v2/tailwind.min.css0.0 ms7.9 KiB
tags.srv.stackadapt.com/events.js5.0 s7.7 KiB
cdn.ai12z.net/pkg/ai12z@latest/dist/esm/image-uploader_2.entry.js0.0 ms6.9 KiB
/amplify_video_thumb/2087677192939474944/img/PxCPJ9l_yldv...604800.0 s67.9 KiB
use.typekit.net/uge0znf.js600.0 s7.1 KiB
pbs.twimg.com/media/HQQlGD_WAAAZNS9.jpg:medium604800.0 s54.7 KiB
/%3fmode-crop-w-640-h-640-quality-65-format-jpg-cache-1-2...3600.0 s6.8 KiB
cdn.ai12z.net/pkg/ai12z@latest/dist/esm/botHelpers-B_moTKAE.js0.0 ms4.6 KiB
cdn.ai12z.net/pkg/ai12z@latest/dist/esm/chatbot-history_2.entry.js0.0 ms4.5 KiB
connect.facebook.net/en_US/sdk.js1200.0 s5.0 KiB
cdn.ai12z.net/pkg/ai12z@latest/dist/esm/library.js0.0 ms4.1 KiB
cdn.ai12z.net/pkg/ai12z@latest/dist/esm/surveyHelpers-Cbq2vpWj.js0.0 ms3.8 KiB
cdn.ai12z.net/pkg/ai12z@latest/dist/esm/beacon-BLOfGU2-.js0.0 ms3.7 KiB
cdn.ai12z.net/pkg/ai12z@latest/dist/esm/keyboard-shortcuts-DNhwh88a.js0.0 ms3.4 KiB
cdn.ai12z.net/pkg/ai12z@latest/dist/esm/app-store-DvKLN4Xd.js0.0 ms3.2 KiB
/w-108-quality-65-cache-1-2-25/USATF/media/USATF/Sponsors...3600.0 s3.8 KiB
/w-108-quality-65-format-jpg-cache-1-2-25/USATF/media/USA...3600.0 s3.5 KiB
cdn.ai12z.net/pkg/ai12z@latest/dist/esm/ctaHelpers-GH6upqgA.js0.0 ms2.8 KiB
cdn.ai12z.net/pkg/ai12z@latest/dist/esm/analyticsService-ChFVg77w.js0.0 ms2.7 KiB
www.usatf.org/CMSTemplates/USATF/scripts/atcb.min.js?v=2686400.0 s6.6 KiB
cdn.ai12z.net/pkg/ai12z@latest/dist/esm/scriptStyleLoader-C_wSk9Fd.js0.0 ms2.6 KiB
/w-108-quality-65-format-jpg-cache-1-2-25/USATF/media/USA...3600.0 s2.7 KiB
/w-108-quality-65-format-jpg-cache-1-2-25/USATF/media/USA...3600.0 s2.5 KiB
/w-108-quality-65-cache-1-2-25/getmedia/36011ccf-8465-4d4...3600.0 s2.2 KiB
/w-108-quality-65-format-jpg-cache-1-2-25/USATF/media/USA...3600.0 s2.2 KiB
/w-108-quality-65-cache-1-2-25/USATF/media/USATF/Sponsors...3600.0 s2.1 KiB
cdn.ai12z.net/pkg/ai12z@latest/dist/esm/logger-DuhlzN1_.js0.0 ms1.7 KiB
/w-108-quality-65-format-jpg-cache-1-2-25/USATF/media/USA...3600.0 s2.1 KiB
/w-108-quality-65-cache-1-2-25/getmedia/a1b9d931-776b-4de...3600.0 s2.1 KiB
/w-108-quality-65-format-jpg-cache-1-2-25/USATF/media/USA...3600.0 s2.0 KiB
/w-108-quality-65-format-jpg-cache-1-2-25/USATF/media/USA...3600.0 s2.0 KiB
/w-108-quality-65-format-jpg-cache-1-2-25/USATF/media/USA...3600.0 s2.0 KiB
cdn.ai12z.net/pkg/ai12z@latest/dist/esm/reCaptchaHelpers-O2ugKpWf.js0.0 ms1.6 KiB
/w-108-quality-65-cache-1-2-25/USATF/media/USATF/Sponsors...3600.0 s1.9 KiB
/w-108-quality-65-format-jpg-cache-1-2-25/USATF/media/USA...3600.0 s1.8 KiB
cdn.curator.io/published/db3c831d-5313-4b09-ad01-7d5e6df88127.js0.0 ms1.4 KiB
/w-108-quality-65-format-jpg-cache-1-2-25/USATF/media/USA...3600.0 s1.7 KiB
cdn.ai12z.net/pkg/ai12z@latest/dist/esm/_commonjsHelpers-Dj2_voLF.js0.0 ms1.3 KiB
cdn.ai12z.net/pkg/ai12z@latest/dist/esm/bodyScrollLock-DvxYmlU_.js0.0 ms1.2 KiB
cdn.ai12z.net/pkg/ai12z@latest/dist/esm/SearchResult-BVGx7wDE.js0.0 ms1.2 KiB
cdn.ai12z.net/assets/bot/v2/themes/theme-default.css0.0 ms1.1 KiB
cdn.ai12z.net/pkg/ai12z@latest/dist/esm/global-store-odmyXuxx.js0.0 ms1.0 KiB
/CMSPages/GetResource.ashx?scriptfile=%7e%2fCMSScripts%2f...917.0 s822 B
cdn.ai12z.net/pkg/ai12z@latest/dist/library/library.css0.0 ms725 B
/amplify_video_thumb/2087677192939474944/img/PxCPJ9l_yldv...604800.0 s5.5 KiB
www.usatf.org/CMSTemplates/USATF/scripts/head-script.js?v=2686400.0 s1.3 KiB
cdn.curator.io/published-css/db3c831d-5313-4b09-ad01-7d5e6df88127.css0.0 ms457 B
pbs.twimg.com/profile_images/1249735531518472192/fV61uZXa_normal.jpg604800.0 s2.0 KiB
/p.gif?s=1&k=uge0znf&ht=tk&h=www.usatf.org&f=10294.10295....604800.0 s205 B
/tr/?id=990614502211933&ev=PageView&dl=https%3A%2F%2Fwww....0.0 ms20 B

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:0.211673] map[node:map[boundingRect:map[bottom:770 height:532 left:0 right:412 top:238 width:412] lhId:page-1-SECTION nodeLabel:ELITE ATHLETES / HIGH PERFORMANCE PARA TRACK & FIELD TEAM USATF STORE UPCOMING … path:1,HTML,1,BODY,5,FORM,13,DIV,0,DIV,4,SECTION selector:form#form > div.overflow-wrap > div.transform-wrap > section.olympic-home-hero-section snippet:<section class="olympic-home-hero-section"> type:node] score:0.211422] map[node:map[boundingRect:map[bottom:570 height:48 left:1 right:411 top:522 width:410] lhId:page-5-A nodeLabel:ELITE ATHLETES / HIGH PERFORMANCE path:1,HTML,1,BODY,5,FORM,13,DIV,0,DIV,4,SECTION,0,DIV,1,DIV,0,DIV,2,DIV,0,DIV,0,A selector:div.olympic-home-hero-section-content > div.olympic-home-hero-section-link-container > div.olympic-home-hero-section-button-container > a.button-block snippet:<a class="button-block button-white olympic-home-hero-section-button button-hover-re…" target="_self" href="/programs/elite-athletes-high-performance"> type:node] score:0.000251 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:152 height:100 left:46 right:366 top:52 width:320] lhId:page-22-IMG nodeLabel:NCSA ATF path:1,HTML,1,BODY,5,FORM,13,DIV,0,DIV,0,SECTION,0,DIV,1,A,0,DIV,0,IMG selector:div.pushdown-promo-margin-wrap > a.CMSBanner > div.pushdown-promo-image-area > img.ratio-image snippet:<img class="ratio-image" alt="NCSA ATF" src="/getmedia/e4f50bfd-02d1-493a-b4b8-715f791d627b/usatf-ads-320x100"> type:node]]] type:subitems]]]

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.

URLEst Savings
/af/c2abbf/000000000000000000010123/27/l?primer=7cdcb44be...50 ms
/af/bb49eb/00000000000000000001011d/27/l?primer=7cdcb44be...45 ms
/af/50ea52/00000000000000000001011c/27/l?primer=7cdcb44be...40 ms
/af/7ba522/00000000000000000001011f/27/l?primer=7cdcb44be...35 ms
/af/bfd933/000000000000000000010122/27/l?primer=7cdcb44be...30 ms
/af/383ab4/0000000000000000000132e4/27/l?primer=7cdcb44be...25 ms
/af/037411/000000000000000077359df7/30/l?primer=7cdcb44be...20 ms
/af/da0c19/00000000000000000001518d/27/l?primer=7cdcb44be...15 ms
/af/32d3ee/0000000000000000000132e0/27/l?primer=7cdcb44be...10 ms
/af/8f4e31/0000000000000000000132e3/27/l?primer=7cdcb44be...10 ms
/af/1da05b/0000000000000000000132df/27/l?primer=7cdcb44be...5.0 ms

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:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:54.785 source:map[type:text value:[unattributed]]]]

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-0-DIV
nodeLabel: section.olympic-home-hero-section > div.olympic-home-hero-section-wrap > div.olympic-home-hero-section-container > div.background-image-snippet
path: 1,HTML,1,BODY,5,FORM,13,DIV,0,DIV,4,SECTION,0,DIV,0,DIV,0,DIV
selector: section.olympic-home-hero-section > div.olympic-home-hero-section-wrap > div.olympic-home-hero-section-container > div.background-image-snippet
snippet: <div class="background-image-snippet olympic-home-hero-section-image" data-image-src="https://images.usatf.org/USATF/media/USATF/Sports/Images/New-Homepage.jpg?…" data-module-id="background-image-snippet" style="background-image: url(&quot;https://images.usatf.org/USATF/media/USATF/Sports/I…&quot;);">

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
/CMSPages/GetResource.ashx?scriptfile=%7e%2fCMSScripts%2f...822 B
cdn.ai12z.net/pkg/ai12z@latest/dist/library/library.css725 B790 ms
/ScriptResource.axd?d=dwY9oWetJoJoVpgL6Zq8OKdZcCf3EF5swBY...10.1 KiB151 ms
/ScriptResource.axd?d=NJmAwtEo3Ipnlaxl6CMhvgs0FMXLI5J6QTK...25.4 KiB302 ms
www.usatf.org/CMSTemplates/USATF/scripts/atcb.min.js?v=266.6 KiB151 ms
www.usatf.org/CMSTemplates/USATF/scripts/head-script.js?v=261.3 KiB
www.usatf.org/CMSTemplates/USATF/styles/site.css?v=2835.4 KiB452 ms
/WebResource.axd?d=pynGkmcFUV13He1Qd6_TZL5WCUC8ll0pzJdM7_...6.3 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
li > a.block-link > div.six-five-ratio-area > img.ratio-image li > a.block-link > div.six-five-ratio-area > img.ratio-image
/USATF/media/USATF/Banners-Advertisements/2025_Summer_Mer...12.9 MiB13.8 MiB
div.featured-athletes-section-card > div.featured-athletes-section-card-image-container > div.featured-athletes-section-card-image-outer > div.featured-athletes-section-card-image-inner div.featured-athletes-section-card > div.featured-athletes-section-card-image-container > div.featured-athletes-section-card-image-outer > div.featured-athletes-section-card-image-inner
/USATF/media/USATF/BioPhotos/Athlete Bios/AliciaMonson-3-...478.1 KiB435.4 KiB
a.default-card-snippet > div.default-card-media > div.standard-ratio-area > img.ratio-image a.default-card-snippet > div.default-card-media > div.standard-ratio-area > img.ratio-image
/quality-65-cache-1-2-25/USATF/media/USATF/Event%20Logos/...117.1 KiB116.4 KiB
a.default-card-snippet > div.default-card-media > div.standard-ratio-area > img.ratio-image a.default-card-snippet > div.default-card-media > div.standard-ratio-area > img.ratio-image
/quality-65-cache-1-2-25/USATF/media/USATF/Event%20Logos/...114.2 KiB113.6 KiB
li > a.block-link > div.six-five-ratio-area > img.ratio-image li > a.block-link > div.six-five-ratio-area > img.ratio-image
www.usatf.org/USATF/media/USATF/Banners-Advertisements/300x250-JeromeAvery-3.jpg61.0 KiB48.8 KiB
li > a.block-link > div.six-five-ratio-area > img.ratio-image li > a.block-link > div.six-five-ratio-area > img.ratio-image
www.usatf.org/USATF/media/USATF/Banners-Advertisements/300x250-GabbyThomas-4.jpg57.6 KiB45.4 KiB
a.default-card-snippet > div.default-card-media > div.standard-ratio-area > img.ratio-image a.default-card-snippet > div.default-card-media > div.standard-ratio-area > img.ratio-image
/quality-65-cache-1-2-25/USATF/media/USATF/Event%20Logos/...42.3 KiB41.8 KiB
USA Track & Field div.header-logo-segment > div.extra-large-center-margin-wrap > a.header-home-link > img.ratio-image
/format-png-quality-65-cache-1-2-25/USATF/media/USATF/Def...25.4 KiB24.1 KiB
a.default-card-snippet > div.default-card-media > div.standard-ratio-area > img.ratio-image a.default-card-snippet > div.default-card-media > div.standard-ratio-area > img.ratio-image
/mode-crop-w-304-h-243-quality-65-cache-1-2-25/USATF/medi...19.2 KiB16.7 KiB
NCSA ATF div.pushdown-promo-margin-wrap > a.CMSBanner > div.pushdown-promo-image-area > img.ratio-image
www.usatf.org/getmedia/e4f50bfd-02d1-493a-b4b8-715f791d627b/usatf-ads-320x10021.9 KiB16.7 KiB
a.default-card-snippet > div.default-card-media > div.standard-ratio-area > img.ratio-image a.default-card-snippet > div.default-card-media > div.standard-ratio-area > img.ratio-image
/mode-crop-w-304-h-243-quality-65-cache-1-2-25/USATF/medi...17.0 KiB14.5 KiB
a.default-card-snippet > div.default-card-media > div.standard-ratio-area > img.ratio-image a.default-card-snippet > div.default-card-media > div.standard-ratio-area > img.ratio-image
/mode-crop-w-304-h-243-quality-65-cache-1-2-25/USATF/medi...15.3 KiB12.8 KiB
section.immersive-column-section > div.columns-snippet > div.immersive-covered-column > div.background-image-snippet section.immersive-column-section > div.columns-snippet > div.immersive-covered-column > div.background-image-snippet
/ext--jpeg-mode-crop-quality-65-cache-1-2-25-w-960-h-589/...103.7 KiB11.6 KiB
a.default-card-snippet > div.default-card-media > div.standard-ratio-area > img.ratio-image a.default-card-snippet > div.default-card-media > div.standard-ratio-area > img.ratio-image
/mode-crop-w-304-h-243-quality-65-cache-1-2-25/USATF/medi...12.9 KiB10.4 KiB
div.featured-athletes-section-card > div.featured-athletes-section-card-image-container > div.featured-athletes-section-card-image-outer > div.featured-athletes-section-card-image-inner div.featured-athletes-section-card > div.featured-athletes-section-card-image-container > div.featured-athletes-section-card-image-outer > div.featured-athletes-section-card-image-inner
/USATF/media/USATF/BioPhotos/Athlete Bios/Rachel-Richeson...49.3 KiB6.6 KiB
li > button.block-link > div.wide-ratio-area > img.ratio-image li > button.block-link > div.wide-ratio-area > img.ratio-image
/mode-crop-w-302-h-170-quality-65-format-jpg-cache-1-2-25...13.7 KiB5.3 KiB
li > button.block-link > div.wide-ratio-area > img.ratio-image li > button.block-link > div.wide-ratio-area > img.ratio-image
/mode-crop-w-302-h-170-quality-65-format-jpg-cache-1-2-25...13.4 KiB5.0 KiB

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: 984 ms
URLTime Spent
usatf.org/984 ms
www.usatf.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.

ElementLayout shift score
ELITE ATHLETES / HIGH PERFORMANCE PARA TRACK & FIELD TEAM USATF STORE UPCOMING … form#form > div.overflow-wrap > div.transform-wrap > section.olympic-home-hero-section
0.211
ELITE ATHLETES / HIGH PERFORMANCE div.olympic-home-hero-section-content > div.olympic-home-hero-section-link-container > div.olympic-home-hero-section-button-container > a.button-block
0.000

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

Minifying JavaScript files can reduce payload sizes and script parse time. Learn how to minify JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 370 ms 113.9 KiB
URLTransfer SizeEst Savings
cdn.ai12z.net/pkg/ai12z@latest/dist/esm/index-CjSLTZFw.js73.1 KiB35.9 KiB
cdn.ai12z.net/pkg/ai12z@latest/dist/esm/ai12z-category_2.entry.js66.2 KiB20.1 KiB
cdn.ai12z.net/pkg/ai12z@latest/dist/esm/index-DrTyKvbY.js53.8 KiB16.0 KiB
cdn.ai12z.net/pkg/ai12z@latest/dist/esm/response-adapter-SyQT2Pr3.js27.9 KiB15.4 KiB
cdn.ai12z.net/pkg/ai12z@latest/dist/esm/processCarouselData-CgoPoIF_.js40.7 KiB14.7 KiB
cdn.ai12z.net/pkg/ai12z@latest/dist/esm/parseHelper-B4cZLEeX.js25.5 KiB6.9 KiB
cdn.ai12z.net/pkg/ai12z@latest/dist/esm/utils-qg8o2dBJ.js10.4 KiB2.6 KiB
cdn.ai12z.net/pkg/ai12z@latest/dist/esm/chat-avatar_6.entry.js9.0 KiB2.3 KiB

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: 150 ms 46.2 KiB
URLTransfer SizeEst Savings
www.usatf.org/CMSTemplates/USATF/styles/site.css?v=2835.1 KiB32.7 KiB
cdn.curator.io/5.0/curator.embed.css14.3 KiB13.6 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: 1.7 s 692.0 KiB
URLTransfer SizeEst Savings
acsbapp.com/apps/app/dist/js/app.js224.0 KiB117.7 KiB
www.googletagmanager.com/gtag/js?id=G-Q286FMRQ1P&cx=c&_slc=1176.5 KiB75.5 KiB
www.googletagmanager.com/gtm.js?id=GTM-KD3QML4130.4 KiB64.5 KiB
cdn.curator.io/5.0/curator.embed.js103.2 KiB63.2 KiB
connect.facebook.net/en_US/bundle/sdk.js/78.9 KiB54.6 KiB
cdn.ai12z.net/pkg/ai12z@latest/dist/esm/ai12z-category_2.entry.js66.2 KiB53.9 KiB
cdn.ai12z.net/pkg/ai12z@latest/dist/esm/index-CjSLTZFw.js73.1 KiB43.8 KiB
www.usatf.org/CMSTemplates/USATF/scripts/main-script.js?v=2749.1 KiB38.8 KiB
www.usatf.org/cmstemplates/usatf/assets/swiper/package/swiper-bundle.min.js38.9 KiB37.9 KiB
connect.facebook.net/en_US/fbevents.js105.0 KiB36.7 KiB
cdn.ai12z.net/pkg/ai12z@latest/dist/esm/index-DrTyKvbY.js53.7 KiB30.4 KiB
/signals/config/990614502211933?v=2.9.385&r=stable&domain...121.6 KiB29.6 KiB
cdn.ai12z.net/pkg/ai12z@latest/dist/esm/processCarouselData-CgoPoIF_.js40.7 KiB25.0 KiB
cdn.ai12z.net/pkg/ai12z@latest/dist/esm/response-adapter-SyQT2Pr3.js27.9 KiB20.1 KiB

Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to reduce Javascript execution time.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTotal CPU TimeScript EvaluationScript Parse
www.usatf.org/2.4 s53 ms13 ms
Unattributable2.1 s260 ms0.0 ms
cdn.curator.io/5.0/curator.embed.js1.1 s638 ms40 ms
acsbapp.com/apps/app/dist/js/app.js657 ms464 ms90 ms
/signals/config/990614502211933?v=2.9.385&r=stable&domain...592 ms508 ms84 ms
connect.facebook.net/en_US/fbevents.js588 ms482 ms75 ms
cdn.ai12z.net/pkg/ai12z@latest/dist/esm/index-DrTyKvbY.js406 ms191 ms2.1 ms
www.googletagmanager.com/gtag/js?id=G-Q286FMRQ1P&cx=c&_slc=1359 ms275 ms82 ms
www.googletagmanager.com/gtm.js?id=GTM-KD3QML4319 ms250 ms44 ms
ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js?v=26291 ms204 ms21 ms
www.google-analytics.com/analytics.js255 ms209 ms17 ms
www.usatf.org/CMSTemplates/USATF/scripts/main-script.js?v=27216 ms72 ms21 ms
connect.facebook.net/en_US/bundle/sdk.js/135 ms105 ms29 ms
use.typekit.net/uge0znf.js101 ms97 ms2.1 ms
tools.luckyorange.com/core/lo.js?site-id=a4790d4a95 ms83 ms12 ms
cdn.curator.io/published/db3c831d-5313-4b09-ad01-7d5e6df88127.js78 ms76 ms0.6 ms
cdn.ai12z.net/pkg/ai12z@latest/dist/esm/scriptStyleLoader-C_wSk9Fd.js68 ms64 ms0.1 ms
tags.srv.stackadapt.com/events.js59 ms47 ms2.3 ms

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.

CategoryTime Spent
Script Evaluation4.2 s
Other3.1 s
Style & Layout1.5 s
Script Parsing & Compilation620 ms
Rendering461 ms
Parse HTML & CSS135 ms
Garbage Collection117 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 reasonFailure type
The page has an unload handler in the main frame.Actionable

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.

URLTransfer Size
/USATF/media/USATF/Banners-Advertisements/2025_Summer_Mer...12.9 MiB
/USATF/media/USATF/BioPhotos/Athlete Bios/AliciaMonson-3-...478.5 KiB
pbs.twimg.com/media/HQwYEvgWIAEEnGO.jpg:medium330.3 KiB
pbs.twimg.com/media/HP7qoP1WoAAf3LU.jpg:medium293.8 KiB
pbs.twimg.com/media/HPUPHnvbMAAD46b.jpg:medium249.2 KiB
acsbapp.com/apps/app/dist/js/app.js229.3 KiB
pbs.twimg.com/media/HQwbBTJXsAAGi2p.jpg:medium222.1 KiB
pbs.twimg.com/media/HP3Yg8fW4AAtq4P.jpg:medium205.5 KiB
pbs.twimg.com/media/HPUaFNAbMAA0hwM.jpg:medium190.2 KiB
www.googletagmanager.com/gtag/js?id=G-Q286FMRQ1P&cx=c&_slc=1176.5 KiB

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
Image posted by usatf to twitter div.crt-post-content > div.crt-image > div.crt-image-c > img.crt-post-image
pbs.twimg.com/media/HP7qoP1WoAAf3LU.jpg:medium
Image posted by usatf to twitter div.crt-post-content > div.crt-image > div.crt-image-c > img.crt-post-image
pbs.twimg.com/media/HP3Yg8fW4AAtq4P.jpg:medium
Image posted by usatf to twitter div.crt-post-content > div.crt-image > div.crt-image-c > img.crt-post-image
pbs.twimg.com/media/HQwYEvgWIAEEnGO.jpg:medium
Image posted by usatf to twitter div.crt-post-content > div.crt-image > div.crt-image-c > img.crt-post-image
pbs.twimg.com/media/HPUaFNAbMAA0hwM.jpg:medium

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

●Optimize DOM size
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●Avoid long main-thread tasks 20 long tasks found
●Network Requests
●Network Round Trip Times 80 ms
●Server Backend Latencies 230 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 290 ms
○INP breakdown
○User Timing marks and measures
○Avoid non-composited animations
80

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

When a button doesn't have an accessible name, screen readers announce it as "button", making it unusable for users who rely on screen readers. Learn how to make buttons more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.extra-large-center-margin-wrap > ul.header-button-list > li.header-search > button.header-button div.extra-large-center-margin-wrap > ul.header-button-list > li.header-search > button.header-button
div.extra-large-center-margin-wrap > ul.header-button-list > li.header-menu > button.header-button div.extra-large-center-margin-wrap > ul.header-button-list > li.header-menu > button.header-button

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
a.default-card-snippet > div.default-card-media > div.standard-ratio-area > img.ratio-image a.default-card-snippet > div.default-card-media > div.standard-ratio-area > img.ratio-image
a.default-card-snippet > div.default-card-media > div.standard-ratio-area > img.ratio-image a.default-card-snippet > div.default-card-media > div.standard-ratio-area > img.ratio-image
a.default-card-snippet > div.default-card-media > div.standard-ratio-area > img.ratio-image a.default-card-snippet > div.default-card-media > div.standard-ratio-area > img.ratio-image
a.default-card-snippet > div.default-card-media > div.standard-ratio-area > img.ratio-image a.default-card-snippet > div.default-card-media > div.standard-ratio-area > img.ratio-image
div.media-feature-column > button.block-link > div.wide-ratio-area > img.ratio-image div.media-feature-column > button.block-link > div.wide-ratio-area > img.ratio-image
li > button.block-link > div.wide-ratio-area > img.ratio-image li > button.block-link > div.wide-ratio-area > img.ratio-image
li > button.block-link > div.wide-ratio-area > img.ratio-image li > button.block-link > div.wide-ratio-area > img.ratio-image
li > button.block-link > div.wide-ratio-area > img.ratio-image li > button.block-link > div.wide-ratio-area > img.ratio-image
li > button.block-link > div.wide-ratio-area > img.ratio-image li > button.block-link > div.wide-ratio-area > img.ratio-image
a.default-card-snippet > div.default-card-media > div.standard-ratio-area > img.ratio-image a.default-card-snippet > div.default-card-media > div.standard-ratio-area > img.ratio-image
a.default-card-snippet > div.default-card-media > div.standard-ratio-area > img.ratio-image a.default-card-snippet > div.default-card-media > div.standard-ratio-area > img.ratio-image
a.default-card-snippet > div.default-card-media > div.standard-ratio-area > img.ratio-image a.default-card-snippet > div.default-card-media > div.standard-ratio-area > img.ratio-image
li > a.block-link > div.six-five-ratio-area > img.ratio-image li > a.block-link > div.six-five-ratio-area > img.ratio-image
li > a.block-link > div.six-five-ratio-area > img.ratio-image li > a.block-link > div.six-five-ratio-area > img.ratio-image
li > a.block-link > div.six-five-ratio-area > img.ratio-image li > a.block-link > div.six-five-ratio-area > img.ratio-image
li > a.block-link > div.six-five-ratio-area > img.ratio-image li > a.block-link > div.six-five-ratio-area > img.ratio-image
li > a.block-link > div.standard-ratio-area > img.ratio-image li > a.block-link > div.standard-ratio-area > img.ratio-image
li > a.block-link > div.standard-ratio-area > img.ratio-image li > a.block-link > div.standard-ratio-area > img.ratio-image
li > a.block-link > div.standard-ratio-area > img.ratio-image li > a.block-link > div.standard-ratio-area > img.ratio-image
li > a.block-link > div.standard-ratio-area > img.ratio-image li > a.block-link > div.standard-ratio-area > img.ratio-image
li > a.block-link > div.standard-ratio-area > img.ratio-image li > a.block-link > div.standard-ratio-area > img.ratio-image
li > a.block-link > div.standard-ratio-area > img.ratio-image li > a.block-link > div.standard-ratio-area > img.ratio-image
li > a.block-link > div.standard-ratio-area > img.ratio-image li > a.block-link > div.standard-ratio-area > img.ratio-image
li > a.block-link > div.standard-ratio-area > img.ratio-image li > a.block-link > div.standard-ratio-area > img.ratio-image
li > a.block-link > div.standard-ratio-area > img.ratio-image li > a.block-link > div.standard-ratio-area > img.ratio-image
li > a.block-link > div.standard-ratio-area > img.ratio-image li > a.block-link > div.standard-ratio-area > img.ratio-image
li > a.block-link > div.standard-ratio-area > img.ratio-image li > a.block-link > div.standard-ratio-area > img.ratio-image
li > a.block-link > div.standard-ratio-area > img.ratio-image li > a.block-link > div.standard-ratio-area > img.ratio-image
li > a.block-link > div.standard-ratio-area > img.ratio-image li > a.block-link > div.standard-ratio-area > img.ratio-image
li > a.block-link > div.standard-ratio-area > img.ratio-image li > a.block-link > div.standard-ratio-area > img.ratio-image
li > a.block-link > div.standard-ratio-area > img.ratio-image li > a.block-link > div.standard-ratio-area > img.ratio-image

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
div.extra-large-center-margin-wrap > ul.four-grid-list > li > a.block-link div.extra-large-center-margin-wrap > ul.four-grid-list > li > a.block-link
div.extra-large-center-margin-wrap > ul.four-grid-list > li > a.block-link div.extra-large-center-margin-wrap > ul.four-grid-list > li > a.block-link
div.extra-large-center-margin-wrap > ul.four-grid-list > li > a.block-link div.extra-large-center-margin-wrap > ul.four-grid-list > li > a.block-link
div.extra-large-center-margin-wrap > ul.four-grid-list > li > a.block-link div.extra-large-center-margin-wrap > ul.four-grid-list > li > a.block-link
div.extra-large-center-margin-wrap > ul.footer-logo-list > li > a.block-link div.extra-large-center-margin-wrap > ul.footer-logo-list > li > a.block-link
div.extra-large-center-margin-wrap > ul.footer-logo-list > li > a.block-link div.extra-large-center-margin-wrap > ul.footer-logo-list > li > a.block-link
div.extra-large-center-margin-wrap > ul.footer-logo-list > li > a.block-link div.extra-large-center-margin-wrap > ul.footer-logo-list > li > a.block-link
div.extra-large-center-margin-wrap > ul.footer-logo-list > li > a.block-link div.extra-large-center-margin-wrap > ul.footer-logo-list > li > a.block-link
div.extra-large-center-margin-wrap > ul.footer-logo-list > li > a.block-link div.extra-large-center-margin-wrap > ul.footer-logo-list > li > a.block-link
div.extra-large-center-margin-wrap > ul.footer-logo-list > li > a.block-link div.extra-large-center-margin-wrap > ul.footer-logo-list > li > a.block-link
div.extra-large-center-margin-wrap > ul.footer-logo-list > li > a.block-link div.extra-large-center-margin-wrap > ul.footer-logo-list > li > a.block-link
div.extra-large-center-margin-wrap > ul.footer-logo-list > li > a.block-link div.extra-large-center-margin-wrap > ul.footer-logo-list > li > a.block-link
div.extra-large-center-margin-wrap > ul.footer-logo-list > li > a.block-link div.extra-large-center-margin-wrap > ul.footer-logo-list > li > a.block-link
div.half-width-logo-container > ul.footer-logo-list > li > a.block-link div.half-width-logo-container > ul.footer-logo-list > li > a.block-link
div.half-width-logo-container > ul.footer-logo-list > li > a.block-link div.half-width-logo-container > ul.footer-logo-list > li > a.block-link
div.half-width-logo-container > ul.footer-logo-list > li > a.block-link div.half-width-logo-container > ul.footer-logo-list > li > a.block-link
div.half-width-logo-container > ul.footer-logo-list > li > a.block-link div.half-width-logo-container > ul.footer-logo-list > li > a.block-link
div.half-width-logo-container > ul.footer-logo-list > li > a.block-link div.half-width-logo-container > ul.footer-logo-list > li > a.block-link
div.half-width-logo-container > ul.footer-logo-list > li > a.block-link div.half-width-logo-container > ul.footer-logo-list > li > a.block-link

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.

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
USATF div.crt-post-c > div.crt-post-header > div.crt-post-fullname > a
https://t.co/yCXtdDxTBW article.crt-post > div.crt-post-c > div.crt-post-text > a
@USATF div.crt-post-c > div.crt-post-footer > span.crt-post-username > a
USATF div.crt-post-c > div.crt-post-header > div.crt-post-fullname > a
#ZurichDL article.crt-post > div.crt-post-c > div.crt-post-text > a
#TeamUSATF article.crt-post > div.crt-post-c > div.crt-post-text > a
@USATF div.crt-post-c > div.crt-post-footer > span.crt-post-username > a
USATF div.crt-post-c > div.crt-post-header > div.crt-post-fullname > a
@USATF div.crt-post-c > div.crt-post-footer > span.crt-post-username > a
USATF div.crt-post-c > div.crt-post-header > div.crt-post-fullname > a
@allysonfelix article.crt-post > div.crt-post-c > div.crt-post-text > a
@TeamUSA article.crt-post > div.crt-post-c > div.crt-post-text > a
@USATF div.crt-post-c > div.crt-post-footer > span.crt-post-username > a
USATF div.crt-post-c > div.crt-post-header > div.crt-post-fullname > a
#OTD article.crt-post > div.crt-post-c > div.crt-post-text > a
#TeamUSATF article.crt-post > div.crt-post-c > div.crt-post-text > a
https://t.co/WWdRtXgfna article.crt-post > div.crt-post-c > div.crt-post-text > a
@USATF div.crt-post-c > div.crt-post-footer > span.crt-post-username > a
USATF div.crt-post-c > div.crt-post-header > div.crt-post-fullname > a
https://t.co/7kUbzdSwEQ article.crt-post > div.crt-post-c > div.crt-post-text > a
@USATF div.crt-post-c > div.crt-post-footer > span.crt-post-username > a
USATF div.crt-post-c > div.crt-post-header > div.crt-post-fullname > a
@LA28 article.crt-post > div.crt-post-c > div.crt-post-text > a
@TrackTownUSA article.crt-post > div.crt-post-c > div.crt-post-text > a
@TeamUSA article.crt-post > div.crt-post-c > div.crt-post-text > a
https://t.co/YznhsfS8K9 article.crt-post > div.crt-post-c > div.crt-post-text > a
@USATF div.crt-post-c > div.crt-post-footer > span.crt-post-username > a
USATF div.crt-post-c > div.crt-post-header > div.crt-post-fullname > a
@WAU20Champs article.crt-post > div.crt-post-c > div.crt-post-text > a
#USU20Champs article.crt-post > div.crt-post-c > div.crt-post-text > a
#WorldAthleticsU20. article.crt-post > div.crt-post-c > div.crt-post-text > a
@USATF div.crt-post-c > div.crt-post-footer > span.crt-post-username > a
USATF div.crt-post-c > div.crt-post-header > div.crt-post-fullname > a
@WAU20Champs article.crt-post > div.crt-post-c > div.crt-post-text > a
#TeamUSATF article.crt-post > div.crt-post-c > div.crt-post-text > a
#WorldAthleticsU20 article.crt-post > div.crt-post-c > div.crt-post-text > a
https://t.co/bCsN5Asmkv article.crt-post > div.crt-post-c > div.crt-post-text > a
@USATF div.crt-post-c > div.crt-post-footer > span.crt-post-username > a
USATF div.crt-post-c > div.crt-post-header > div.crt-post-fullname > a
#TeamUSATF article.crt-post > div.crt-post-c > div.crt-post-text > a
@WAU20Champs article.crt-post > div.crt-post-c > div.crt-post-text > a
#WAOregon26 article.crt-post > div.crt-post-c > div.crt-post-text > a
#WorldAthleticsU20 article.crt-post > div.crt-post-c > div.crt-post-text > a
https://t.co/FsbScQfAFv article.crt-post > div.crt-post-c > div.crt-post-text > a
@USATF div.crt-post-c > div.crt-post-footer > span.crt-post-username > a
USATF div.crt-post-c > div.crt-post-header > div.crt-post-fullname > a
#TeamUSATF article.crt-post > div.crt-post-c > div.crt-post-text > a
#WorldAthleticsU20 article.crt-post > div.crt-post-c > div.crt-post-text > a
https://t.co/5as5uWeBAA article.crt-post > div.crt-post-c > div.crt-post-text > a
@USATF div.crt-post-c > div.crt-post-footer > span.crt-post-username > a
USATF div.crt-post-c > div.crt-post-header > div.crt-post-fullname > a
#TeamUSATF article.crt-post > div.crt-post-c > div.crt-post-text > a
#WAOregon26 article.crt-post > div.crt-post-c > div.crt-post-text > a
#WorldAthleticsU20 article.crt-post > div.crt-post-c > div.crt-post-text > a
https://t.co/IReAoNjEGZ article.crt-post > div.crt-post-c > div.crt-post-text > a
@USATF div.crt-post-c > div.crt-post-footer > span.crt-post-username > a

These are opportunities to improve the legibility of your content.

Internationalization and localization

If a page doesn't specify a `lang` attribute, a screen reader assumes that the page is in the default language that the user chose when setting up the screen reader. If the page isn't actually in the default language, then the screen reader might not announce the page's text correctly. Learn more about the `lang` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
html.wf-brandongrotesque-i4-active html.wf-brandongrotesque-i4-active

These are opportunities to improve the interpretation of your content by users in different locales.

Best practices

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
html.wf-brandongrotesque-i4-active html.wf-brandongrotesque-i4-active

These items highlight common accessibility best practices.

Visible text labels that do not match the accessible name can result in a confusing experience for screen reader users. Learn more about accessible names.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Ask me anything div > div.pt-0 > div.pointer-events-auto > button.rounded-full
○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]` values are valid
●`[aria-*]` attributes have valid values
●`[aria-*]` attributes are valid and not misspelled
●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.
●`button`, `link`, and `menuitem` elements have accessible names
●ARIA attributes are used as specified for the element's role
●`[aria-hidden="true"]` elements do not contain focusable descendents
●Elements use only permitted ARIA attributes
●ARIA `tooltip` elements have accessible names
●Document has a `<title>` element
●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
●Touch targets have sufficient size and spacing.
●`[lang]` attributes have a valid value
●Heading elements appear in a sequentially-descending order
●Deprecated ARIA roles were not used
●All heading elements contain content.
●Identical links have the same purpose.
○`[accesskey]` values are unique
○Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
○ARIA input fields have accessible names
○ARIA `meter` elements have accessible names
○ARIA `progressbar` elements have accessible names
○`[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 `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 a valid value for its `[lang]` attribute
○`<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
○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.
62

Best Practices

User Experience

Preventing input pasting is a bad practice for the UX, and weakens security by blocking password managers.Learn more about user-friendly input fields.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Type your message here div.flex-1 > div.grow-wrap > div.textarea > textarea#message-input

Image natural dimensions should be proportional to the display size and the pixel ratio to maximize image clarity. Learn how to provide responsive images.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLDisplayed sizeActual sizeExpected size
NCSA ATF div.pushdown-promo-margin-wrap > a.CMSBanner > div.pushdown-promo-image-area > img.ratio-image
www.usatf.org/getmedia/e4f50bfd-02d1-493a-b4b8-715f791d627b/usatf-ads-320x100320 x 100320 x 100480 x 150

Browser Compatibility

Specifying a doctype prevents the browser from switching to quirks-mode. Learn more about the doctype declaration.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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
Unload event listeners are deprecated and will be removed.
/ScriptResource.axd?d=NJmAwtEo3Ipnlaxl6CMhvgs0FMXLI5J6QTK... line 4, col 57515
●Uses HTTPS
●Avoids third-party cookies
●Avoids requesting the geolocation permission on page load
●Avoids requesting the notification permission on page load
●Displays images with correct aspect ratio
●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 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
77

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 destinationLink Text
www.usatf.org/news/2025/an-americas-record-at-the-paralympics-is-just-one-READ MORE
www.usatf.org/news/2026/taylor-s-historic-u20-triple-earns-him-usatf-athleREAD 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
a.default-card-snippet > div.default-card-media > div.standard-ratio-area > img.ratio-image a.default-card-snippet > div.default-card-media > div.standard-ratio-area > img.ratio-image
a.default-card-snippet > div.default-card-media > div.standard-ratio-area > img.ratio-image a.default-card-snippet > div.default-card-media > div.standard-ratio-area > img.ratio-image
a.default-card-snippet > div.default-card-media > div.standard-ratio-area > img.ratio-image a.default-card-snippet > div.default-card-media > div.standard-ratio-area > img.ratio-image
a.default-card-snippet > div.default-card-media > div.standard-ratio-area > img.ratio-image a.default-card-snippet > div.default-card-media > div.standard-ratio-area > img.ratio-image
div.media-feature-column > button.block-link > div.wide-ratio-area > img.ratio-image div.media-feature-column > button.block-link > div.wide-ratio-area > img.ratio-image
li > button.block-link > div.wide-ratio-area > img.ratio-image li > button.block-link > div.wide-ratio-area > img.ratio-image
li > button.block-link > div.wide-ratio-area > img.ratio-image li > button.block-link > div.wide-ratio-area > img.ratio-image
li > button.block-link > div.wide-ratio-area > img.ratio-image li > button.block-link > div.wide-ratio-area > img.ratio-image
li > button.block-link > div.wide-ratio-area > img.ratio-image li > button.block-link > div.wide-ratio-area > img.ratio-image
a.default-card-snippet > div.default-card-media > div.standard-ratio-area > img.ratio-image a.default-card-snippet > div.default-card-media > div.standard-ratio-area > img.ratio-image
a.default-card-snippet > div.default-card-media > div.standard-ratio-area > img.ratio-image a.default-card-snippet > div.default-card-media > div.standard-ratio-area > img.ratio-image
a.default-card-snippet > div.default-card-media > div.standard-ratio-area > img.ratio-image a.default-card-snippet > div.default-card-media > div.standard-ratio-area > img.ratio-image
li > a.block-link > div.six-five-ratio-area > img.ratio-image li > a.block-link > div.six-five-ratio-area > img.ratio-image
li > a.block-link > div.six-five-ratio-area > img.ratio-image li > a.block-link > div.six-five-ratio-area > img.ratio-image
li > a.block-link > div.six-five-ratio-area > img.ratio-image li > a.block-link > div.six-five-ratio-area > img.ratio-image
li > a.block-link > div.six-five-ratio-area > img.ratio-image li > a.block-link > div.six-five-ratio-area > img.ratio-image
li > a.block-link > div.standard-ratio-area > img.ratio-image li > a.block-link > div.standard-ratio-area > img.ratio-image
li > a.block-link > div.standard-ratio-area > img.ratio-image li > a.block-link > div.standard-ratio-area > img.ratio-image
li > a.block-link > div.standard-ratio-area > img.ratio-image li > a.block-link > div.standard-ratio-area > img.ratio-image
li > a.block-link > div.standard-ratio-area > img.ratio-image li > a.block-link > div.standard-ratio-area > img.ratio-image
li > a.block-link > div.standard-ratio-area > img.ratio-image li > a.block-link > div.standard-ratio-area > img.ratio-image
li > a.block-link > div.standard-ratio-area > img.ratio-image li > a.block-link > div.standard-ratio-area > img.ratio-image
li > a.block-link > div.standard-ratio-area > img.ratio-image li > a.block-link > div.standard-ratio-area > img.ratio-image
li > a.block-link > div.standard-ratio-area > img.ratio-image li > a.block-link > div.standard-ratio-area > img.ratio-image
li > a.block-link > div.standard-ratio-area > img.ratio-image li > a.block-link > div.standard-ratio-area > img.ratio-image
li > a.block-link > div.standard-ratio-area > img.ratio-image li > a.block-link > div.standard-ratio-area > img.ratio-image
li > a.block-link > div.standard-ratio-area > img.ratio-image li > a.block-link > div.standard-ratio-area > img.ratio-image
li > a.block-link > div.standard-ratio-area > img.ratio-image li > a.block-link > div.standard-ratio-area > img.ratio-image
li > a.block-link > div.standard-ratio-area > img.ratio-image li > a.block-link > div.standard-ratio-area > img.ratio-image
li > a.block-link > div.standard-ratio-area > img.ratio-image li > a.block-link > div.standard-ratio-area > img.ratio-image
li > a.block-link > div.standard-ratio-area > img.ratio-image li > a.block-link > div.standard-ratio-area > img.ratio-image

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`

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