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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.

52

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
/Areas/GFO/assets/js/libraries-generated.js?v=bfae96857af...14400.0 s286.7 KiB
www.gatesfoundation.org/assets/fonts/NotoSans-ExtraCondensed-BlackItalic.woff214400.0 s199.7 KiB
www.gatesfoundation.org/assets/fonts/NotoSerif-Condensed-LightItalic.woff214400.0 s195.8 KiB
www.gatesfoundation.org/assets/fonts/NotoSans-ExtraCondensed-Black.woff214400.0 s193.9 KiB
www.gatesfoundation.org/assets/fonts/NotoSerif-Condensed-Light.woff214400.0 s173.7 KiB
www.gatesfoundation.org/assets/fonts/NotoSans-CondensedSemiBoldItalic.woff214400.0 s173.3 KiB
www.gatesfoundation.org/assets/fonts/NotoSans-CondensedMediumItalic.woff214400.0 s173.0 KiB
www.gatesfoundation.org/assets/fonts/NotoSans-CondensedBoldItalic.woff214400.0 s172.9 KiB
www.gatesfoundation.org/assets/fonts/NotoSans-CondensedItalic.woff214400.0 s172.6 KiB
www.gatesfoundation.org/assets/fonts/NotoSans-CondensedLightItalic.woff214400.0 s170.6 KiB
www.gatesfoundation.org/assets/fonts/NotoSans-CondensedBold.woff214400.0 s167.7 KiB
www.gatesfoundation.org/assets/fonts/NotoSans-Condensed.woff214400.0 s167.5 KiB
www.gatesfoundation.org/assets/fonts/NotoSans-CondensedSemiBold.woff214400.0 s167.3 KiB
www.gatesfoundation.org/assets/fonts/NotoSans-CondensedMedium.woff214400.0 s167.1 KiB
www.gatesfoundation.org/assets/fonts/NotoSans-CondensedLight.woff214400.0 s166.8 KiB
www.gatesfoundation.org/assets/fonts/NotoSerif-LightItalic.woff214400.0 s145.2 KiB
www.gatesfoundation.org/assets/fonts/NotoSerif-SemiBoldItalic.woff214400.0 s141.7 KiB
www.gatesfoundation.org/assets/fonts/NotoSerif-MediumItalic.woff214400.0 s141.4 KiB
www.gatesfoundation.org/assets/fonts/NotoSerif-Italic.woff214400.0 s133.7 KiB
www.gatesfoundation.org/assets/fonts/NotoSerif-Light.woff214400.0 s133.5 KiB
www.gatesfoundation.org/assets/fonts/NotoSerifDisplay-Medium.woff214400.0 s129.4 KiB
www.gatesfoundation.org/assets/fonts/NotoSerif-Medium.woff214400.0 s128.6 KiB
www.gatesfoundation.org/assets/fonts/NotoSerif-SemiBold.woff214400.0 s128.5 KiB
www.gatesfoundation.org/assets/fonts/NotoSerif-Regular.woff214400.0 s123.0 KiB
/-/media/gfo/5ideas_articles/articles/20251208-three-insi...604800.0 s540.3 KiB
/Areas/GFO/assets/css/index-generated.css?v=bfae96857aff7...14400.0 s58.9 KiB
/-/media/gfo/5ideas_articles/articles/20241118-improved-f...604800.0 s354.7 KiB
/Areas/GFO/assets/js/index-generated.js?v=bfae96857aff7ee...14400.0 s47.0 KiB
/-/media/gfo/3about/1ourstory/home_ourstory_pga1287486_fc...604800.0 s183.4 KiB
/-/media/gfo/5ideas_articles/articles/20250822-digital-ed...604800.0 s182.2 KiB
www.gatesfoundation.org/assets/fonts/NotoSerif-BoldItalic.woff214400.0 s26.3 KiB
/-/media/gfo/5ideas_articles/articles/20260115-core-missi...604800.0 s170.8 KiB
/-/media/gfo/2home/how-we-work.png?rev=de12196b805e442699...604800.0 s170.0 KiB
/-/media/gfo/5ideas_articles/articles/20260310-investing-...604800.0 s169.0 KiB
www.gatesfoundation.org/assets/fonts/NotoSerif-bold.woff214400.0 s23.7 KiB
www.gatesfoundation.org/assets/fonts/NotoSerif-Bold.woff214400.0 s23.6 KiB
/-/media/gfo/2home/our-story.png?rev=cf4e13999a0d49009f04...604800.0 s159.6 KiB
/-/media/gfo/5ideas_articles/portraits-of-potential/pohp-...604800.0 s149.7 KiB
/-/media/gfo/2home/our-role.png?rev=9eb9d0761ea34bac93765...604800.0 s147.6 KiB
/-/media/gfo/5ideas_articles/articles/20260312-senegal-bi...604800.0 s143.7 KiB
/-/media/gfo/5ideas_articles/articles/20251104-lagos-busi...604800.0 s141.6 KiB
/-/media/gfo/5ideas_articles/goalkeepers/thumbnail_gk25-l...604800.0 s139.2 KiB
/-/media/gfo/5ideas_articles/articles/20250917-pepfar-imp...604800.0 s136.6 KiB
/-/media/gfo/5ideas_articles/articles/20251003-global-fun...604800.0 s133.2 KiB
/-/media/gfo/5ideas_articles/articles/20250624-new-medica...604800.0 s128.3 KiB
/-/media/gfo/2home/mm752953.jpg?rev=fd8ec2786d7f4a05b351f...604800.0 s124.0 KiB
/-/media/gfo/5ideas_articles/articles/20260212-obgyn-expe...604800.0 s121.8 KiB
/-/media/gfo/5ideas_articles/articles/20260128-future-of-...604800.0 s115.0 KiB
/-/media/gfo/4our-work/programs/global-health/gh_malaria_...604800.0 s114.7 KiB
/-/media/gfo/5ideas_articles/articles/20260312-senegal-bi...604800.0 s107.0 KiB
/-/media/gfo/5ideas_articles/articles/20251020-polio-outb...604800.0 s100.5 KiB
/-/media/gfo/5ideas_articles/articles/20251118-cabo-verde...604800.0 s98.1 KiB
/-/media/gfo/5ideas_articles/articles/20260324-how-a-comm...604800.0 s95.8 KiB
/assets/js/email-signup-generated.js?v=bfae96857aff7eec6d...14400.0 s5.2 KiB
/assets/css/text-over-media-generated.css?v=bfae96857aff7...14400.0 s2.4 KiB
/assets/css/email-signup-generated.css?v=bfae96857aff7eec...14400.0 s2.4 KiB
/assets/css/half-gate-hero-generated.css?v=bfae96857aff7e...14400.0 s2.0 KiB
/assets/js/text-over-media-generated.js?v=bfae96857aff7ee...14400.0 s2.0 KiB
/assets/js/text-over-carousel-generated.js?v=bfae96857aff...14400.0 s1.8 KiB
/assets/js/half-gate-hero-generated.js?v=bfae96857aff7eec...14400.0 s1.7 KiB
/assets/css/text-over-carousel-generated.css?v=bfae96857a...14400.0 s1.1 KiB
/assets/js/tabbed-content-carousel-generated.js?v=bfae968...14400.0 s1.1 KiB
/assets/css/tabbed-content-carousel-generated.css?v=bfae9...14400.0 s1.1 KiB
/-/media/gfo/5ideas_articles/portraits-of-potential/pohp-...604800.0 s6.7 KiB
www.gatesfoundation.org/assets/js/oldBrowser.js14400.0 s466 B
www.gstatic.com/recaptcha/api2/logo_48.png604800.0 s2.3 KiB
/-/media/logos/gf-primary-parchment-logo_4by1-ratio-fixed...604800.0 s2.1 KiB
/-/media/logos/gf-primary-weathered-slate-logo_4by1-ratio...604800.0 s2.1 KiB
www.gstatic.com/recaptcha/api2/info_2x.png604800.0 s689 B
www.gstatic.com/recaptcha/api2/refresh_2x.png604800.0 s624 B
www.gstatic.com/recaptcha/api2/audio_2x.png604800.0 s554 B

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
fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff235 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:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:42.093 source:map[column:8495 line:11 type:source-location url:https://www.gatesfoundation.org/ 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:0.227 source:map[column:10703 line:9 type:source-location url:https://www.gatesfoundation.org/Areas/GFO/assets/js/index-generated.js?v=bfae96857aff7eec6d2db67b0638233e72f1b687 urlProvider:network]] map[reflowTime:38.166 source:map[column:871773 line:0 type:source-location url:https://www.gatesfoundation.org/Areas/GFO/assets/js/libraries-generated.js?v=bfae96857aff7eec6d2db67b0638233e72f1b687 urlProvider:network]] map[reflowTime:1.332 source:map[column:871480 line:0 type:source-location url:https://www.gatesfoundation.org/Areas/GFO/assets/js/libraries-generated.js?v=bfae96857aff7eec6d2db67b0638233e72f1b687 urlProvider:network]] map[reflowTime:0.156 source:map[column:871542 line:0 type:source-location url:https://www.gatesfoundation.org/Areas/GFO/assets/js/libraries-generated.js?v=bfae96857aff7eec6d2db67b0638233e72f1b687 urlProvider:network]] map[reflowTime:0.18 source:map[column:871610 line:0 type:source-location url:https://www.gatesfoundation.org/Areas/GFO/assets/js/libraries-generated.js?v=bfae96857aff7eec6d2db67b0638233e72f1b687 urlProvider:network]] map[reflowTime:0.461 source:map[column:872998 line:0 type:source-location url:https://www.gatesfoundation.org/Areas/GFO/assets/js/libraries-generated.js?v=bfae96857aff7eec6d2db67b0638233e72f1b687 urlProvider:network]] map[reflowTime:1.117 source:map[column:871795 line:0 type:source-location url:https://www.gatesfoundation.org/Areas/GFO/assets/js/libraries-generated.js?v=bfae96857aff7eec6d2db67b0638233e72f1b687 urlProvider:network]] map[reflowTime:0.454 source:map[column:76113 line:9 type:source-location url:https://www.gatesfoundation.org/Areas/GFO/assets/js/index-generated.js?v=bfae96857aff7eec6d2db67b0638233e72f1b687 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.

URLResource SizeEst Savings
Goalkeepers Report 2025 section.article-promo > figure.article-promo__media > div.js-make-clickable-element > img.image-element
/-/media/gfo/5ideas_articles/articles/20251208-three-insi...539.4 KiB516.7 KiB
Why smallholder farmers are investing in a new kind of tilapia section.article-promo > figure.article-promo__media > div.js-make-clickable-element > img
/-/media/gfo/5ideas_articles/articles/20241118-improved-f...354.1 KiB308.6 KiB
A repository of education certificates in a Nigerian school. section.article-promo > figure.article-promo__media > div.js-make-clickable-element > img.image-element
/-/media/gfo/5ideas_articles/articles/20250822-digital-ed...181.8 KiB159.1 KiB
div.grouped-cta-cards__items > div.cta-card > div.cta-card__image > img div.grouped-cta-cards__items > div.cta-card > div.cta-card__image > img
/-/media/gfo/2home/how-we-work.png?rev=de12196b805e442699...169.5 KiB151.7 KiB
section.horizontal-cta-card > div.horizontal-cta-card__inner > div.horizontal-cta-card__media > img.image-element section.horizontal-cta-card > div.horizontal-cta-card__inner > div.horizontal-cta-card__media > img.image-element
/-/media/gfo/3about/1ourstory/home_ourstory_pga1287486_fc...183.0 KiB149.4 KiB
Dr. Stellah Bosire (middle) walks along the railroad tracks with the members of… section.article-promo > figure.article-promo__media > div.js-make-clickable-element > img.image-element
/-/media/gfo/5ideas_articles/articles/20260310-investing-...168.7 KiB145.9 KiB
div.grouped-cta-cards__items > div.cta-card > div.cta-card__image > img div.grouped-cta-cards__items > div.cta-card > div.cta-card__image > img
/-/media/gfo/2home/our-story.png?rev=cf4e13999a0d49009f04...159.2 KiB141.4 KiB
Rose sits quietly on her mother Annie Sackie’s lap after receiving the oral pol… figure > section.text-over-media__container > picture.picture-element > img.image-element
/-/media/gfo/5ideas_articles/articles/20260115-core-missi...170.4 KiB130.2 KiB
div.grouped-cta-cards__items > div.cta-card > div.cta-card__image > img div.grouped-cta-cards__items > div.cta-card > div.cta-card__image > img
/-/media/gfo/2home/our-role.png?rev=9eb9d0761ea34bac93765...147.3 KiB129.4 KiB
Fatoumata Cisse teaches in a classroom that is part of the Associates in Resear… section.article-promo > figure.article-promo__media > div.js-make-clickable-element > img.image-element
/-/media/gfo/5ideas_articles/articles/20260312-senegal-bi...143.4 KiB120.6 KiB
Olayinka Dada, Financial Service Provider Advisor, at the Lagos Business School… section.article-promo > figure.article-promo__media > div.js-make-clickable-element > img.image-element
/-/media/gfo/5ideas_articles/articles/20251104-lagos-busi...141.2 KiB118.5 KiB
Goalkeepers 2025 section.article-promo > figure.article-promo__media > div.js-make-clickable-element > img.image-element
/-/media/gfo/5ideas_articles/goalkeepers/thumbnail_gk25-l...138.8 KiB116.1 KiB
Emilie Leeflang, Alie Leeflang, and Maddie Leeflang pose for a portrait outside… section.article-promo > figure.article-promo__media > div.js-make-clickable-element > img.image-element
/-/media/gfo/5ideas_articles/articles/20250917-pepfar-imp...136.2 KiB113.5 KiB
From L to R: Evaline Kibuchi, Robinah Babirye with her son, and Semiye Michael … section.article-promo > figure.article-promo__media > div.js-make-clickable-element > img.image-element
/-/media/gfo/5ideas_articles/articles/20251003-global-fun...132.8 KiB110.1 KiB
Christine Muteria with her son in Wote, Kenya. section.article-promo > figure.article-promo__media > div.js-make-clickable-element > img.image-element
/-/media/gfo/5ideas_articles/articles/20250624-new-medica...127.9 KiB105.2 KiB
Prof. Dr. Hadiza Shehu Galadanci exits her home before setting off for work at … section.article-promo > figure.article-promo__media > div.js-make-clickable-element > img.image-element
/-/media/gfo/5ideas_articles/articles/20260212-obgyn-expe...121.3 KiB98.6 KiB
Hussain Aleaziz, a staff member of the Gates Foundation, chats with conference … section.article-promo > figure.article-promo__media > div.js-make-clickable-element > img.image-element
/-/media/gfo/5ideas_articles/articles/20260128-future-of-...114.6 KiB91.9 KiB
Partners of Human Potential div.half-gate-hero__container > figure.half-gate-hero__media > picture.picture-element > img.image-element
/-/media/gfo/5ideas_articles/portraits-of-potential/pohp-...149.3 KiB90.2 KiB
Student Fatou Ndiaye poses for a portrait in a classroom that is part of the As… section.article-promo > figure.article-promo__media > div.js-make-clickable-element > img.image-element
/-/media/gfo/5ideas_articles/articles/20260312-senegal-bi...106.5 KiB83.8 KiB
section.horizontal-cta-card > div.horizontal-cta-card__inner > div.horizontal-cta-card__media > img.image-element section.horizontal-cta-card > div.horizontal-cta-card__inner > div.horizontal-cta-card__media > img.image-element
/-/media/gfo/4our-work/programs/global-health/gh_malaria_...114.3 KiB80.7 KiB
2025 marks a heartbreaking milestone: for the first time this century, child de… figure > section.text-over-media__container > picture.picture-element > img.image-element
/-/media/gfo/2home/mm752953.jpg?rev=fd8ec2786d7f4a05b351f...123.5 KiB77.6 KiB
Evans Lablah, a UNICEF immunization specialist, outside the Bong County cold st… section.article-promo > figure.article-promo__media > div.js-make-clickable-element > img.image-element
/-/media/gfo/5ideas_articles/articles/20251020-polio-outb...100.2 KiB77.5 KiB
Adéritow Gonçalves, medical entomologist with the National Institute of Public … section.article-promo > figure.article-promo__media > div.js-make-clickable-element > img.image-element
/-/media/gfo/5ideas_articles/articles/20251118-cabo-verde...97.8 KiB75.0 KiB
Researchers at at WITS RHI in South Africa at the M72 trial site. section.article-promo > figure.article-promo__media > div.js-make-clickable-element > img.image-element
/-/media/gfo/5ideas_articles/articles/20260324-how-a-comm...95.3 KiB72.6 KiB

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-7-IMG
nodeLabel: Rose sits quietly on her mother Annie Sackie’s lap after receiving the oral pol…
path: 1,HTML,1,BODY,3,DIV,1,MAIN,1,DIV,2,SECTION,0,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,FIGURE,0,SECTION,1,PICTURE,2,IMG
selector: figure > section.text-over-media__container > picture.picture-element > img.image-element
snippet: <img src="https://www.gatesfoundation.org/-/media/gfo/5ideas_articles/articles/20260…" class="image-element" alt="Rose sits quietly on her mother Annie Sackie’s lap after receiving the ora…" srcset="/-/media/gfo/5ideas_articles/articles/20260115-core-mission-child-health-s…">

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
www.gatesfoundation.org/assets/js/oldBrowser.js466 B
/Areas/GFO/assets/css/index-generated.css?v=bfae96857aff7...58.9 KiB498 ms
/assets/css/half-gate-hero-generated.css?v=bfae96857aff7e...2.0 KiB
/assets/css/email-signup-generated.css?v=bfae96857aff7eec...2.4 KiB
/assets/css/tabbed-content-carousel-generated.css?v=bfae9...1.1 KiB
/assets/css/text-over-carousel-generated.css?v=bfae96857a...1.1 KiB
/assets/css/text-over-media-generated.css?v=bfae96857aff7...2.4 KiB166 ms

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

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

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: 803 ms
URLTime Spent
gatesfoundation.org/803 ms
www.gatesfoundation.org/0.0 ms

Keep the server response time for the main document short because all other requests depend on it. Learn more about the Time to First Byte metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 789 ms
URLTime Spent
www.gatesfoundation.org/889 ms

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: 330 ms 51.6 KiB
URLTransfer SizeEst Savings
/Areas/GFO/assets/css/index-generated.css?v=bfae96857aff7...58.8 KiB51.6 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: 1.2 s 374.6 KiB
URLTransfer SizeEst Savings
/Areas/GFO/assets/js/libraries-generated.js?v=bfae96857af...286.3 KiB186.6 KiB
www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js361.8 KiB161.9 KiB
/Areas/GFO/assets/js/index-generated.js?v=bfae96857aff7ee...46.9 KiB26.0 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTotal CPU TimeScript EvaluationScript Parse
www.gatesfoundation.org/2.3 s1.0 s18 ms
www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js518 ms414 ms80 ms
/Areas/GFO/assets/js/libraries-generated.js?v=bfae96857af...492 ms43 ms82 ms
Unattributable436 ms5.8 ms0.0 ms
/Areas/GFO/assets/js/index-generated.js?v=bfae96857aff7ee...215 ms170 ms19 ms
js-agent.newrelic.com/nr-spa-1.313.1.min.js206 ms168 ms12 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 Evaluation1.9 s
Other944 ms
Style & Layout674 ms
Rendering350 ms
Script Parsing & Compilation223 ms
Parse HTML & CSS104 ms
Garbage Collection62 ms

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
/-/media/gfo/5ideas_articles/articles/20251208-three-insi...540.3 KiB
www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js362.4 KiB
www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js361.9 KiB
/-/media/gfo/5ideas_articles/articles/20241118-improved-f...354.7 KiB
/Areas/GFO/assets/js/libraries-generated.js?v=bfae96857af...286.7 KiB
www.gatesfoundation.org/assets/fonts/NotoSans-ExtraCondensed-BlackItalic.woff2199.7 KiB
www.googletagmanager.com/gtm.js?id=GTM-TK28RTV199.2 KiB
www.gatesfoundation.org/assets/fonts/NotoSerif-Condensed-LightItalic.woff2195.8 KiB
www.gatesfoundation.org/assets/fonts/NotoSans-ExtraCondensed-Black.woff2193.9 KiB
/-/media/gfo/3about/1ourstory/home_ourstory_pga1287486_fc...183.4 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
div.grouped-cta-cards__items > div.cta-card > div.cta-card__image > img div.grouped-cta-cards__items > div.cta-card > div.cta-card__image > img
/-/media/gfo/2home/our-role.png?rev=9eb9d0761ea34bac93765...
div.grouped-cta-cards__items > div.cta-card > div.cta-card__image > img div.grouped-cta-cards__items > div.cta-card > div.cta-card__image > img
/-/media/gfo/2home/how-we-work.png?rev=de12196b805e442699...
div.grouped-cta-cards__items > div.cta-card > div.cta-card__image > img div.grouped-cta-cards__items > div.cta-card > div.cta-card__image > img
/-/media/gfo/2home/our-story.png?rev=cf4e13999a0d49009f04...
Gates Foundation div.global-footer__container > div.global-footer__logo > a.global-footer__logo-link > img.global-footer__logo-image
/-/media/logos/gf-primary-parchment-logo_4by1-ratio-fixed...
Gates Foundation div.site-logo > a.site-logo__link > picture.site-logo__image > img
/-/media/logos/gf-primary-weathered-slate-logo_4by1-ratio...

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

●Layout shift culprits
●Optimize DOM size
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●Minify JavaScript
●Avoid long main-thread tasks 14 long tasks found
●Avoid non-composited animations 5 animated elements found
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 30 ms
●Server Backend Latencies 200 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Avoid large layout shifts 3 layout shifts found
○INP breakdown
○User Timing marks and measures
97

Accessibility

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

Contrast

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
This site is protected by reCAPTCHA and the Google Privacy Policy, and Terms of… div.email-signup__inner > form.sc-form > div.email-signup__terms > p

These are opportunities to improve the legibility of your content.

○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
●Image elements have `[alt]` attributes
●Form elements have associated labels
●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
●ARIA attributes are used as specified for the element's role
●`[aria-hidden="true"]` elements do not contain focusable descendents
●Elements use only permitted ARIA attributes
●Document has a `<title>` element
●`<html>` element has a `[lang]` attribute
●`<html>` element has a valid value for its `[lang]` attribute
●Links are distinguishable without relying on color.
●Links have a discernible name
●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
●Document has a main landmark.
●Deprecated ARIA roles were not used
●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
○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
○Elements with the `role=text` attribute do not have focusable descendents.
○ARIA toggle fields have accessible names
○ARIA `tooltip` elements have accessible names
○ARIA `treeitem` elements have accessible names
○The page contains a heading, skip link, or landmark region
○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
○Definition list items are wrapped in `<dl>` elements
○ARIA IDs are unique
○No form fields have multiple labels
○`<frame>` or `<iframe>` elements have a title
○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
○Input buttons have discernible text.
○`<input type="image">` elements have `[alt]` text
○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>`.
○All heading elements contain content.
○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.
96

Best Practices

General

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

SourceDescription
www.gatesfoundation.org/Areas/GFO/assets/css/ajax-loader.gif
Failed to load resource: the server responded with a status of 404 ()
●Uses HTTPS
●Avoids deprecated APIs
●Avoids third-party cookies
●Allows users to paste into input fields
●Avoids requesting the geolocation permission on page load
●Avoids requesting the notification permission on page load
●Displays images with correct aspect ratio
●Serves images with appropriate resolution
●Page has the HTML doctype
●Properly defines charset
●No issues in the `Issues` panel in Chrome Devtools
●Ensure CSP is effective against XSS attacks
●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
○Use a strong HSTS policy
92

SEO

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

Content Best Practices

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Link destinationLink Text
www.gatesfoundation.org/ideas/partners-human-potentialLearn more
www.gatesfoundation.org/about/our-roleLearn more
www.gatesfoundation.org/about/how-we-workLearn more
www.gatesfoundation.org/about/our-storyLearn more

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

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

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