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

Audit breakdown by category with detailed findings.

73

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
js.stripe.com/v3/120.0 s221.2 KiB
hcaptcha.com/1/api.js?onload=captchaLoad&render=explicit300.0 s85.8 KiB
/sdk/js?client-id=Afbm69ig8nMRLmZKS-QoONq7qIHPqlpYJ1l3vyx...3600.0 s98.0 KiB
assets.edfcdn.org/assets/global/dist/js/utilities.min.js?v=20260422073600.0 s85.3 KiB
cdn.fundraiseup.com/widget/AQBHBSYR0.0 ms65.5 KiB
m.stripe.network/out-4.5.45.js300.0 s14.1 KiB
/sites/default/files/styles/3_2_1008_672_focal_point/publ...1209600.0 s116.2 KiB
scripts.clarity.ms/0.8.59/clarity.js86400.0 s26.2 KiB
/sites/default/files/styles/3_2_1008_672_focal_point/publ...1209600.0 s93.1 KiB
/sites/default/files/styles/3_2_1008_672_focal_point/publ...1209600.0 s76.5 KiB
/sites/default/files/styles/3_2_1008_672_focal_point/publ...1209600.0 s67.6 KiB
assets.edfcdn.org/assets/global/dist/js/assets/signups.min.js?v=20260422233600.0 s7.5 KiB
assets.edfcdn.org/assets/global/dist/js/assets/cookieconsent.min.js600.0 s6.4 KiB
/cdn-cgi/challenge-platform/h/b/d/9f086d1edd7837e5/177690...0.0 ms5.7 KiB
assets.edfcdn.org/assets/donation_starter/dist/js/donation_starter.min.js600.0 s5.7 KiB
/cdn-cgi/challenge-platform/h/b/d/9f086d03791737e5/177690...0.0 ms4.8 KiB
/sites/default/files/styles/3_2_1008_672_focal_point/publ...1209600.0 s47.6 KiB
/sites/default/files/styles/3_2_1008_672_focal_point/publ...1209600.0 s46.6 KiB
/sites/default/files/styles/1_1_394_394_focal_point/publi...1209600.0 s42.7 KiB
assets.edfcdn.org/assets/global/dist/js/css/cookieconsent.css600.0 s4.5 KiB
/sites/default/files/styles/3_2_504_336_focal_point/publi...1209600.0 s37.7 KiB
/sites/default/files/styles/3_2_504_336_focal_point/publi...1209600.0 s37.1 KiB
/sites/default/files/styles/3_2_1008_672_focal_point/publ...1209600.0 s35.7 KiB
assets.edfcdn.org/assets/mailchimp/dist/js/signup.min.js600.0 s3.5 KiB
/sites/default/files/styles/3_2_504_336_focal_point/publi...1209600.0 s30.7 KiB
/sites/default/files/styles/1_1_394_394_focal_point/publi...1209600.0 s29.8 KiB
/sites/default/files/js/js_t6Gpq-JUyC8ONfgYv1oJLR49qonCRR...1209600.0 s29.3 KiB
/sites/default/files/styles/3_2_504_336_focal_point/publi...1209600.0 s28.7 KiB
/sites/default/files/styles/4_3_540_405_focal_point/publi...1209600.0 s28.1 KiB
/sites/default/files/styles/1_1_394_394_focal_point/publi...1209600.0 s27.2 KiB
script.crazyegg.com/pages/scripts/0011/2468.js?493583300.0 s2.7 KiB
assets.edfcdn.org/assets/fundraise_up/dist/js/fundraise_up.min.js600.0 s2.7 KiB
/sites/default/files/styles/1_1_394_394_focal_point/publi...1209600.0 s22.9 KiB
/sites/default/files/styles/1_1_394_394_focal_point/publi...1209600.0 s20.8 KiB
/sites/default/files/styles/4_3_540_405_focal_point/publi...1209600.0 s19.0 KiB
/sites/default/files/css/css_CEvqf4ZT1oBdc4-6iOOd6J192mD0...1209600.0 s18.4 KiB
/sites/default/files/styles/1_1_394_394_focal_point/publi...1209600.0 s17.3 KiB
/sites/default/files/styles/4_3_540_405_focal_point/publi...1209600.0 s17.1 KiB
/sites/default/files/styles/2_1_366_183_focal_point/publi...1209600.0 s15.9 KiB
/sites/default/files/styles/4_3_540_405_focal_point/publi...1209600.0 s15.2 KiB
/sites/default/files/styles/1_1_394_394_focal_point/publi...1209600.0 s14.8 KiB
/sites/default/files/styles/1_1_394_394_focal_point/publi...1209600.0 s12.5 KiB
assets.edfcdn.org/assets/donation_starter/dist/css/donation_starter.min.css600.0 s1.3 KiB
/sites/default/files/styles/2_1_366_183_focal_point/publi...1209600.0 s10.8 KiB
/sites/default/files/styles/2_1_366_183_focal_point/publi...1209600.0 s9.6 KiB
/sites/default/files/styles/2_1_732_366_focal_point/publi...1209600.0 s9.2 KiB
/sites/default/files/styles/2_1_366_183_focal_point/publi...1209600.0 s8.8 KiB
/sites/default/files/styles/2_1_366_183_focal_point/publi...1209600.0 s8.2 KiB
/sites/default/files/styles/2_1_366_183_focal_point/publi...1209600.0 s7.6 KiB
/sites/default/files/styles/2_1_366_183_focal_point/publi...1209600.0 s7.6 KiB
/sites/default/files/styles/2_1_366_183_focal_point/publi...1209600.0 s7.2 KiB
/sites/default/files/styles/2_1_366_183_focal_point/publi...1209600.0 s6.4 KiB
assets.edfcdn.org/assets/global/dist/js/assets/homepage.min.js?v=20260422233600.0 s652 B
/sites/default/files/styles/2_1_366_183_focal_point/publi...1209600.0 s3.9 KiB
cdn.fundraiseup.com/embed-data/elements-global/AQBHBSYR.js0.0 ms364 B
assets.edfcdn.org/assets/fundraise_up/dist/css/fundraise_up.min.css600.0 s391 B
www.edf.org/themes/edf2020/images/source/site-logo.svg1209600.0 s3.1 KiB
www.edf.org/themes/edf2020/images/icons/Molecule.svg1209600.0 s3.0 KiB
www.edf.org/themes/edf2020/images/icons/Handshake.svg1209600.0 s2.5 KiB
challenges.cloudflare.com/cdn-cgi/challenge-platform/h/b/cmg/10.0 ms208 B
challenges.cloudflare.com/cdn-cgi/challenge-platform/h/b/cmg/10.0 ms208 B
/sites/default/files/styles/hidden/public/2021-06/NBS_her...300.0 s210 B
www.edf.org/themes/edf2020/images/icons/Justice.svg1209600.0 s1.8 KiB
www.edf.org/themes/edf2020/images/icons/Building.svg1209600.0 s1.7 KiB
www.edf.org/themes/edf2020/images/icons/Bar-graph.svg1209600.0 s1.4 KiB
www.edf.org/themes/edf2020/images/icons/Culture.svg1209600.0 s1.4 KiB
/sites/default/files/css/css_mIZjsccq_aPU1p6hZuB3pRH7D0tW...1209600.0 s1.4 KiB
www.edf.org/themes/edf2020/images/source/watermark-logo.svg1209600.0 s1.4 KiB
www.edf.org/themes/edf2020/images/source/edf-logomark-white-outline.svg1209600.0 s1.3 KiB
/browser/v1/input/metrics?k=97a33aa010f59c9472d2db76b210a...0.0 ms126 B
/sites/default/files/css/css_r3xo6xvgWFsxYqud2vo2O-P4yton...1209600.0 s1.2 KiB
www.edf.org/themes/edf2020/images/optimized/logo--vital-signs.svg1209600.0 s1.1 KiB
www.edf.org/themes/edf2020/images/source/hero-thumbnail-overlay.svg1209600.0 s1.0 KiB
/browser/v1/input/metrics?k=97a33aa010f59c9472d2db76b210a...0.0 ms84 B
www.edf.org/themes/edf2020/images/source/hero-two-swooshes.svg1209600.0 s742 B
/browser/v1/input/metrics?k=97a33aa010f59c9472d2db76b210a...0.0 ms61 B
/browser/v1/input/metrics?k=97a33aa010f59c9472d2db76b210a...0.0 ms60 B
/browser/v1/input/metrics?k=97a33aa010f59c9472d2db76b210a...0.0 ms60 B
/browser/v1/input/metrics?k=97a33aa010f59c9472d2db76b210a...0.0 ms60 B
/browser/v1/input/metrics?k=97a33aa010f59c9472d2db76b210a...0.0 ms60 B
/browser/v1/input/metrics?k=97a33aa010f59c9472d2db76b210a...0.0 ms60 B
/browser/v1/input/metrics?k=97a33aa010f59c9472d2db76b210a...0.0 ms59 B
/browser/v1/input/metrics?k=97a33aa010f59c9472d2db76b210a...0.0 ms59 B
/browser/v1/input/metrics?k=97a33aa010f59c9472d2db76b210a...0.0 ms59 B
js.stripe.com/v3/120.0 s59 B
www.edf.org/themes/edf2020/images/source/arrow-right.svg1209600.0 s458 B
www.edf.org/themes/edf2020/images/optimized/close--circle.svg1209600.0 s362 B
www.edf.org/themes/edf2020/images/source/arrow-right-white.svg1209600.0 s280 B
www.edf.org/themes/edf2020/images/optimized/arrow-right-black.svg1209600.0 s272 B
www.edf.org/themes/edf2020/images/optimized/arrow-right-white.svg1209600.0 s253 B
/sites/default/files/styles/hidden/public/2023-05/reducin...1209600.0 s197 B
/sites/default/files/styles/hidden/public/2023-05/MSAT-la...1209600.0 s173 B
/sites/default/files/styles/hidden/public/2025-07/methane...1209600.0 s167 B
/sites/default/files/styles/hidden/public/2023-05/GettyIm...1209600.0 s157 B
/sites/default/files/styles/hidden/public/2020-08/annual-...1209600.0 s153 B
/sites/default/files/styles/hidden/public/2023-05/gettyim...1209600.0 s153 B
/sites/default/files/styles/hidden/public/2023-05/hydroge...1209600.0 s147 B
m.stripe.network/out-4.5.45.js300.0 s0 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:0.155758] map[node:map[boundingRect:map[bottom:1933 height:1139 left:0 right:1350 top:794 width:1350] lhId:page-5-DIV nodeLabel:We are Environmental Defense Fund We are a global nonprofit organization tackl… path:1,HTML,1,BODY,3,DIV,10,MAIN,0,DIV,0,DIV,1,ARTICLE,1,DIV selector:div.layout-content > div > article.layout__container > div.c-block snippet:<div class="c-block c-block--home-impact block block-layout-builder block-inline-block…"> type:node] score:0.155319] map[node:map[boundingRect:map[bottom:97 height:97 left:210 right:1090 top:0 width:880] lhId:page-1-UL nodeLabel:Our work Our impact About us Get involved News and stories path:1,HTML,1,BODY,3,DIV,2,HEADER,2,UL selector:body.not-logged-in > div.dialog-off-canvas-main-canvas > header#block-topnav-edf2020 > ul#TopnavVerticals snippet:<ul class="c-site-nav__list topnav-verticals" id="TopnavVerticals"> type:node] score:0.000439]]

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:7.068 source:map[column:218206 line:3 type:source-location url:https://assets.edfcdn.org/assets/global/dist/js/utilities.min.js?v=2026042207 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:109.133 source:map[type:text value:[unattributed]]] map[reflowTime:0.474 source:map[column:51681 line:1 type:source-location url:https://cdnjs.cloudflare.com/ajax/libs/jquery/3.6.0/jquery.min.js urlProvider:network]] map[reflowTime:3.004 source:map[column:17939 line:0 type:source-location url:https://assets.edfcdn.org/assets/global/dist/js/assets/signups.min.js?v=2026042223 urlProvider:network]] map[reflowTime:5.19 source:map[column:149924 line:2 type:source-location url:https://cdn.fundraiseup.com/widget/AQBHBSYR urlProvider:network]] map[reflowTime:0.301 source:map[column:17535 line:85 type:source-location url:https://static.fundraiseup.com/elements-vendors.c590dd34e4f5ac29.js urlProvider:network]] map[reflowTime:7.068 source:map[column:217397 line:2 type:source-location url:https://assets.edfcdn.org/assets/global/dist/js/utilities.min.js?v=2026042207 urlProvider:network]]]

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-IMG
nodeLabel: Earth from space
path: 1,HTML,1,BODY,3,DIV,10,MAIN,0,DIV,0,DIV,1,ARTICLE,0,DIV,0,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,0,FIGURE,0,DIV,0,DIV,0,PICTURE,10,IMG
selector: div.visual-holder > div > picture > img
snippet: <img loading="eager" width="504" height="336" src="https://www.edf.org/sites/default/files/styles/3_2_1008_672_focal_point/pu…" alt="Earth from space">

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.

More than 4 preconnect connections were found. These should be used sparingly and only to the most important origins.
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.

URLTransfer SizeDuration
assets.edfcdn.org/assets/global/dist/js/utilities.min.js?v=202604220785.3 KiB283 ms
/sites/default/files/css/css_mIZjsccq_aPU1p6hZuB3pRH7D0tW...1.4 KiB
/sites/default/files/css/css_CEvqf4ZT1oBdc4-6iOOd6J192mD0...18.4 KiB
/sites/default/files/css/css_r3xo6xvgWFsxYqud2vo2O-P4yton...1.2 KiB

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.

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
A fishing boat at the dock. div.visual-holder > div > picture > img
/sites/default/files/styles/3_2_1008_672_focal_point/publ...93.0 KiB38.5 KiB
A fishing boat at the dock. div.thumbnails-container > div.thumbnails > button.change-slide > img
/sites/default/files/styles/3_2_504_336_focal_point/publi...36.9 KiB33.0 KiB
Bird's-eye view of a coastal marsh in Oregon figure.issues-card-img-container > div > picture > img
/sites/default/files/styles/1_1_394_394_focal_point/publi...42.5 KiB32.8 KiB
Earth from space div.visual-holder > div > picture > img
/sites/default/files/styles/3_2_1008_672_focal_point/publ...76.4 KiB31.6 KiB
Earth from space div.thumbnails-container > div.thumbnails > button.change-slide > img
/sites/default/files/styles/3_2_504_336_focal_point/publi...30.6 KiB26.7 KiB
smokestacks billowing pollution into a blue sky dotted with white clouds div.thumbnails-container > div.thumbnails > button.change-slide > img
/sites/default/files/styles/3_2_504_336_focal_point/publi...28.6 KiB24.7 KiB
Person in lab preparing instrument for MethaneSAT methane-tracking satellite figure.issues-card-img-container > div > picture > img
/sites/default/files/styles/1_1_394_394_focal_point/publi...29.6 KiB20.0 KiB
smokestacks billowing pollution into a blue sky dotted with white clouds div.visual-holder > div > picture > img
/sites/default/files/styles/3_2_1008_672_focal_point/publ...47.4 KiB19.7 KiB
Blue hydrogen tank with "H2 Hydrogen" on it figure.issues-card-img-container > div > picture > img
/sites/default/files/styles/1_1_394_394_focal_point/publi...27.0 KiB17.4 KiB
Close up of hands holding wheat in a field figure.issues-card-img-container > div > picture > img
/sites/default/files/styles/1_1_394_394_focal_point/publi...22.8 KiB14.1 KiB
Fisherman on fishing boat figure.issues-card-img-container > div > picture > img
/sites/default/files/styles/1_1_394_394_focal_point/publi...20.6 KiB12.8 KiB
A cover crop's green leaves emerge among dry wheat stems after the harvest, wit… article > div > picture > img
/sites/default/files/styles/4_3_540_405_focal_point/publi...28.0 KiB12.6 KiB
Fundraising Campaign logo. div.widget-campaign > div.campaign > div.campaign-header > img.campaign-header-logo
ucarecdn.com/8533051b-2715-47b2-a169-a490733e6a90/-/resize/x50/-/format/auto/5.9 KiB4.4 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: 239 ms
URLTime Spent
edf.org/239 ms
www.edf.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
We are Environmental Defense Fund We are a global nonprofit organization tackl… div.layout-content > div > article.layout__container > div.c-block
0.155
Our work Our impact About us Get involved News and stories body.not-logged-in > div.dialog-off-canvas-main-canvas > header#block-topnav-edf2020 > ul#TopnavVerticals
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

Diagnostics

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: 110 ms 875.6 KiB
URLTransfer SizeEst Savings
static.fundraiseup.com/checkout.621abe447e62aa70.js411.0 KiB246.1 KiB
js.stripe.com/v3/220.8 KiB145.6 KiB
js.stripe.com/v3/220.8 KiB134.4 KiB
static.fundraiseup.com/checkout-sentry-vendor.dda4c7629502a974.js111.7 KiB86.6 KiB
www.googletagmanager.com/gtag/js?id=DC-4390944130.6 KiB53.0 KiB
static.fundraiseup.com/checkout-vendors.78ab7844d94042df.js105.2 KiB50.0 KiB
/sdk/js?client-id=Afbm69ig8nMRLmZKS-QoONq7qIHPqlpYJ1l3vyx...95.8 KiB44.1 KiB
admin-pipeline.upsun-us-2.observability-pipeline.blackfire.io/js/probe.js96.3 KiB31.9 KiB
pay.google.com/gp/p/js/pay.js68.3 KiB30.2 KiB
assets.edfcdn.org/assets/global/dist/js/utilities.min.js?v=202604220784.7 KiB27.6 KiB
/pages/versioned/common-scripts/d4db359b93044eca900e8363b...55.3 KiB26.1 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
assets.edfcdn.org/assets/global/dist/js/utilities.min.js?v=2026042207450 ms214 ms6.1 ms
Unattributable371 ms12 ms0.0 ms
static.fundraiseup.com/checkout-vendors.78ab7844d94042df.js312 ms267 ms13 ms
www.edf.org/293 ms6.6 ms1.7 ms
js.stripe.com/v3/230 ms167 ms46 ms
cdn.fundraiseup.com/widget/AQBHBSYR195 ms179 ms5.1 ms
admin-pipeline.upsun-us-2.observability-pipeline.blackfire.io/js/probe.js179 ms139 ms2.2 ms
static.fundraiseup.com/checkout-sentry-vendor.dda4c7629502a974.js120 ms101 ms6.8 ms
static.fundraiseup.com/donation-form.41b66f2219e57ec2.js106 ms92 ms2.5 ms
/pages/versioned/common-scripts/d4db359b93044eca900e8363b...103 ms99 ms3.0 ms
static.fundraiseup.com/checkout.621abe447e62aa70.js93 ms3.3 ms85 ms
/sdk/js?client-id=Afbm69ig8nMRLmZKS-QoONq7qIHPqlpYJ1l3vyx...93 ms80 ms9.4 ms
scripts.clarity.ms/0.8.59/clarity.js72 ms70 ms1.7 ms
static.fundraiseup.com/elementsApi.f3d559d9c515427c.js68 ms58 ms8.4 ms
static.fundraiseup.com/checkout-locale6.7a0737cf8a6e3f72.js51 ms49 ms1.5 ms
www.googletagmanager.com/gtag/js?id=DC-439094451 ms43 ms7.3 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 Evaluation1.9 s
Other647 ms
Style & Layout297 ms
Script Parsing & Compilation256 ms
Rendering55 ms
Garbage Collection47 ms
Parse HTML & CSS30 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
Pages with cache-control:no-store header cannot enter back/forward cache.Actionable
Pages that use WebXR are not currently eligible for back/forward cache.Actionable
Pages whose main resource has cache-control:no-store cannot enter back/forward cache.Not actionable
Back/forward cache is disabled because some JavaScript network request received resource with Cache-Control: no-store header.Not actionable
SharedWorkerWithNoActiveClientNot 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 3.0 KiB
URLTransfer SizeEst Savings
.fun-widget-backdrop-holder { inset: 0 !important; width: 100% !important; … } …4.0 KiB3.0 KiB

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: 0.0 ms 2.0 KiB
URLTransfer SizeEst Savings
inline: (()=>{ function getAllData…4.2 KiB2.0 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: 0.0 ms 66.4 KiB
URLTransfer SizeEst Savings
code,pre{font-family:Courier New,DejaVu Sans Mono,monospace} …38.0 KiB27.5 KiB
*,*::before,*::after{box-sizing:border-box} …25.9 KiB23.4 KiB
/sites/default/files/css/css_CEvqf4ZT1oBdc4-6iOOd6J192mD0...18.3 KiB15.5 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.

URLTransfer Size
static.fundraiseup.com/checkout.621abe447e62aa70.js411.2 KiB
/c/608aad5179420c705eec42fb9cc5400dcd50c11207eea1a4b009e2...376.6 KiB
/cdn-cgi/challenge-platform/h/b/flow/ov1/859148713:177689...280.9 KiB
/cdn-cgi/challenge-platform/h/b/flow/ov1/859148713:177689...280.4 KiB
/v3/fingerprinted/js/controller-with-preconnect-785818987...269.9 KiB
www.edf.org/252.9 KiB
js.stripe.com/v3/221.2 KiB
js.stripe.com/v3/fingerprinted/js/shared-1bfc9b084984c8982d86dcd061025785.js185.3 KiB
/captcha/v1/7d7b8b396198c8eb285d18bbc376e49a41bb440a/stat...164.9 KiB
static.fundraiseup.com/elements-langs-vendors.86315bee0669542d.js139.7 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
Environmental Defense Fund Logo header#block-topnav-edf2020 > div.logo-holder > a.site-logo__link > img.site-logo
www.edf.org/themes/edf2020/images/source/site-logo.svg
Environmental Defense Fund Logo div.first-columns > div.column > a > img.site-logo
www.edf.org/themes/edf2020/images/source/site-logo.svg

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

●Max Potential First Input Delay 130 ms
●Optimize DOM size
●Font display
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●User Timing marks and measures 18 user timings
●Avoid long main-thread tasks 6 long tasks found
●Avoid non-composited animations 9 animated elements found
●Network Requests
●Network Round Trip Times 180 ms
●Server Backend Latencies 580 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 0 ms
○INP breakdown
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.

ARIA

ARIA dialog elements without accessible names may prevent screen readers users from discerning the purpose of these elements. Learn how to make ARIA dialog elements more accessible.

Why this matters

Informational: a Permissions-Policy directive showing feature -> allowed origins.

Source: MDN Permissions-Policy

Failing Elements
We use cookies to personalize content and ads, to provide social media features… body.not-logged-in > div#cc--main > div#cc_div > div#cm

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

○Interactive controls are keyboard focusable
○Interactive elements indicate their purpose and state
○The page has a logical tab order
○Visual order on the page follows DOM order
○User focus is not accidentally trapped in a region
○The user's focus is directed to new content added to the page
○HTML5 landmark elements are used to improve navigation
○Offscreen content is hidden from assistive technology
○Custom controls have associated labels
○Custom controls have ARIA roles
●`[aria-*]` attributes match their roles
●`[aria-hidden="true"]` is not present on the document `<body>`
●`[role]`s have all required `[aria-*]` attributes
●`[role]` values are valid
●`[aria-*]` attributes have valid values
●`[aria-*]` attributes are valid and not misspelled
●Buttons have an accessible name
●Image elements have `[alt]` attributes
●Input buttons have discernible text.
●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
●Background and foreground colors have a sufficient contrast ratio
●`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
●Definition list items are wrapped in `<dl>` elements
●Document has a `<title>` element
●`<frame>` or `<iframe>` elements have a title
●`<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.
●Heading elements appear in a sequentially-descending order
●Document has a main landmark.
●Deprecated ARIA roles were not used
●Uses ARIA roles only on compatible elements
○`[accesskey]` values are unique
○`button`, `link`, and `menuitem` elements have accessible names
○ARIA input fields have accessible names
○ARIA `meter` elements have accessible names
○ARIA `progressbar` elements have accessible names
○Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
○`[role]`s are contained by their required parent element
○Elements with the `role=text` attribute do not have focusable descendents.
○ARIA toggle fields have accessible names
○ARIA `tooltip` elements have accessible names
○ARIA `treeitem` elements have accessible names
○The page contains a heading, skip link, or landmark region
○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.
○`[lang]` attributes have a valid value
○`<video>` elements contain a `<track>` element with `[kind="captions"]`
○Tables have different content in the summary attribute and `<caption>`.
○All heading elements contain content.
○Image elements do not have `[alt]` attributes that are redundant text.
○Identical links have the same purpose.
○Elements with visible text labels have matching accessible names.
○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 / WarningSource
Unload event listeners are deprecated and will be removed.
assets.edfcdn.org/assets/global/dist/js/utilities.min.js?v=2026042207 line 2, col 77474
●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 DOM-based XSS with Trusted Types
●Detected JavaScript libraries
●Page has valid source maps
○Redirects HTTP traffic to HTTPS
○Mitigate clickjacking with XFO or CSP
92

SEO

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

Content Best Practices

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Link destinationLink Text
www.edf.org/protectLearn 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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