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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.

34

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
cdn.unenvironment.org/2026-04/54973305839_09c4e582cb_k%20%282%29.jpg1800.0 s1.5 MiB
/s3fs-public/styles/article_billboard_image/public/2023-0...1800.0 s681.8 KiB
/s3fs-public/styles/topics_content_promo/public/2026-04/I...1800.0 s473.8 KiB
/styles/topics_content_promo/s3/2026-04/coral-reef.jpg?it...1800.0 s347.2 KiB
/styles/topics_content_promo/s3/2026-03/peter-mitchell-lZ...1800.0 s332.3 KiB
/styles/topics_content_promo/s3/2026-04/AFP__20260215_96J...1800.0 s306.5 KiB
/s3fs-public/styles/topics_content_promo/public/2026-04/I...1800.0 s276.2 KiB
/styles/topics_content_promo/s3/2026-03/green 1400x630.pn...1800.0 s262.5 KiB
/styles/topics_content_promo/s3/2024-04/Louise Mabulo Cac...1800.0 s193.2 KiB
/s3fs-public/styles/topics_content_promo/public/2025-05/2...1800.0 s160.6 KiB
t.contentsquare.net/uxa/9f13e54095441.js0.0 ms128.7 KiB
/styles/topics_content_promo/s3/2026-04/art002e008486orig...1800.0 s125.2 KiB
www.unep.org/themes/custom/UNEP_3Spot/js/main.js?tduw5w1800.0 s103.3 KiB
connect.facebook.net/en_US/fbevents.js1200.0 s96.6 KiB
connect.facebook.net/en_US/bundle/sdk.js/1200.0 s77.8 KiB
www.unep.org/themes/custom/UNEP_3Spot/css/master.css?tduw5w1800.0 s73.6 KiB
/signals/config/949353062541573?v=2.9.303&r=stable&domain...1200.0 s44.4 KiB
www.instagram.com/embed.js1200.0 s33.8 KiB
www.unep.org/core/assets/vendor/jquery/jquery.min.js?v=3.7.11800.0 s30.8 KiB
platform.twitter.com/widgets.js1800.0 s27.3 KiB
cdn.mouseflow.com/projects/05364eea-c592-43cd-84d8-bfac4aace6cf.js86400.0 s53.3 KiB
www.google-analytics.com/analytics.js7200.0 s20.9 KiB
www.unep.org/themes/custom/UNEP_3Spot/img/SDG_Wheel_Transparent_WEB.png1800.0 s11.9 KiB
www.unep.org/cdn-cgi/challenge-platform/h/b/scripts/jsd/0b8fb825cb67/main.js?14400.0 s11.1 KiB
www.unep.org/core/misc/drupal.js?v=10.6.71800.0 s6.3 KiB
connect.facebook.net/en_US/sdk.js#xfbml=1&version=v2.61200.0 s5.1 KiB
www.unep.org/cdn-cgi/scripts/7d0fa10a/cloudflare-static/rocket-loader.min.js2872.0 s3.9 KiB
script.crazyegg.com/pages/scripts/0126/2475.js300.0 s2.7 KiB
www.unep.org/themes/custom/UNEP_3Spot/css/print.css?tduw5w1800.0 s2.4 KiB
www.unep.org/themes/custom/UNEP_3Spot/js/app.js?tduw5w1800.0 s1.9 KiB
www.unep.org/themes/custom/UNEP_3Spot/css/easy-responsive-tabs.css1800.0 s1.0 KiB
www.unep.org/themes/custom/UNEP_3Spot/css/slick-theme.css1800.0 s876 B
embedr.flickr.com/assets/client-code.js7200.0 s882 B
www.unep.org/themes/custom/UNEP_3Spot/css/d8.css?tduw5w1800.0 s727 B
/themes/contrib/stable/css/system/components/hidden.modul...1800.0 s683 B
www.unep.org/themes/custom/UNEP_3Spot/css/slick.css1800.0 s598 B
www.unep.org/core/misc/drupal.init.js?v=10.6.71800.0 s540 B
embedr.flickr.com/assets/embedr-loader.js300.0 s461 B
www.unep.org/themes/custom/UNEP_3Spot/css/sdg_modal.css1800.0 s468 B
www.unep.org/core/misc/drupalSettingsLoader.js?v=10.6.71800.0 s460 B
www.unep.org/modules/contrib/poll/css/poll.theme.css?tduw5w1800.0 s358 B
/themes/contrib/stable/css/system/components/system-statu...1800.0 s357 B
/themes/contrib/stable/css/system/components/system-statu...1800.0 s345 B
www.unep.org/themes/contrib/stable/css/system/components/js.module.css?tduw5w1800.0 s290 B
www.unep.org/themes/contrib/stable/css/system/components/align.module.css?tduw5w1800.0 s286 B
www.unep.org/themes/contrib/stable/css/views/views.module.css?tduw5w1800.0 s285 B
/themes/contrib/stable/css/system/components/clearfix.mod...1800.0 s281 B
/themes/contrib/stable/css/system/components/tablesort.mo...1800.0 s269 B
www.unep.org/modules/contrib/paragraphs/css/paragraphs.unpublished.css?tduw5w1800.0 s242 B
/themes/contrib/stable/css/system/components/reset-appear...1800.0 s240 B
www.unep.org/modules/contrib/poll/css/poll.base.css?tduw5w1800.0 s237 B
/themes/contrib/stable/css/system/components/system-statu...1800.0 s220 B
/themes/contrib/stable/css/system/components/item-list.mo...1800.0 s216 B
/themes/contrib/stable/css/system/components/container-in...1800.0 s215 B
/themes/contrib/stable/css/system/components/position-con...1800.0 s215 B
/themes/contrib/stable/css/system/components/resize.modul...1800.0 s211 B
/themes/contrib/stable/css/system/components/nowrap.modul...1800.0 s168 B
/themes/contrib/stable/css/system/components/details.modu...1800.0 s167 B
/themes/contrib/stable/css/system/components/fieldgroup.m...1800.0 s147 B
/tr/?id=949353062541573&ev=PageView&dl=https%3A%2F%2Fwww....0.0 ms16 B
/a?v=3&t=l&pid=841809553&rv=64h1&tag_exp=0~115938465~1159...0.0 ms11 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
/ajax/libs/font-awesome/4.7.0/fonts/fontawesome-webfont.w...75 ms
fonts.gstatic.com/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff230 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLResource SizeEst Savings
div.home_left_column > div.home_cell > div.home_cell_image > img div.home_left_column > div.home_cell > div.home_cell_image > img
cdn.unenvironment.org/2026-04/54973305839_09c4e582cb_k%20%282%29.jpg1.5 MiB1.4 MiB
Sustainable Development Goals A clean and healthy environment is required to a… div.parallax_banner > div > div#block-homepagesdgparallaxen > section.parallax_block
/s3fs-public/styles/article_billboard_image/public/2023-0...681.1 KiB537.5 KiB
COP 15 - Brazil div.home_stories_item > div.home_stories_item_image > a > img
/s3fs-public/styles/topics_content_promo/public/2026-04/I...473.2 KiB434.8 KiB
Coral reef div.home_stories_item > div.home_stories_item_image > a > img
/styles/topics_content_promo/s3/2026-04/coral-reef.jpg?it...346.6 KiB308.2 KiB
div.home_left_column > div.home_cell > div.home_cell_image > img div.home_left_column > div.home_cell > div.home_cell_image > img
/styles/topics_content_promo/s3/2026-03/peter-mitchell-lZ...331.6 KiB293.3 KiB
A woman walks among tree stumps div.home_stories_item > div.home_stories_item_image > a > img
/styles/topics_content_promo/s3/2026-04/AFP__20260215_96J...305.8 KiB267.5 KiB
Inside UNEP's compound div.home_stories_item > div.home_stories_item_image > a > img
/s3fs-public/styles/topics_content_promo/public/2026-04/I...275.5 KiB237.2 KiB
div.home_right_column > div.home_cell > div.home_cell_image > img div.home_right_column > div.home_cell > div.home_cell_image > img
/styles/topics_content_promo/s3/2026-03/green 1400x630.pn...261.9 KiB223.5 KiB
div.home_right_column > div.home_cell > div.home_cell_image > img div.home_right_column > div.home_cell > div.home_cell_image > img
/styles/topics_content_promo/s3/2024-04/Louise Mabulo Cac...192.5 KiB154.2 KiB
A silhouette of a woman with a baby on her back, appears to touch a plant div.home_stories_item > div.home_stories_item_image > a > img
/s3fs-public/styles/topics_content_promo/public/2025-05/2...160.0 KiB121.7 KiB
Un astronauta observa la Tierra desde una nave espacial. div.home_stories_item > div.home_stories_item_image > a > img
/styles/topics_content_promo/s3/2026-04/art002e008486orig...124.6 KiB86.3 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-0-IMG
nodeLabel: div.home_left_column > div.home_cell > div.home_cell_image > img
path: 5,HTML,1,BODY,10,DIV,4,DIV,6,DIV,2,DIV,0,DIV,1,DIV,0,DIV,16,DIV,0,DIV,0,IMG
selector: div.home_left_column > div.home_cell > div.home_cell_image > img
snippet: <img src="https://cdn.unenvironment.org/2026-04/54973305839_09c4e582cb_k%20%282%29.j…">

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.unep.org/themes/custom/UNEP_3Spot/css/master.css?tduw5w73.6 KiB834 ms
cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.2/css/all.css19.9 KiB1.3 s
www.unep.org/themes/custom/UNEP_3Spot/css/d8.css?tduw5w727 B
www.unep.org/modules/contrib/paragraphs/css/paragraphs.unpublished.css?tduw5w242 B
fonts.googleapis.com/css?family=Permanent+Marker373 B
www.unep.org/modules/contrib/poll/css/poll.base.css?tduw5w237 B
/css?family=Roboto:100,300,400,500,600,700|Noto+Sans:400|...2.3 KiB822 ms
www.unep.org/modules/contrib/poll/css/poll.theme.css?tduw5w358 B
www.unep.org/themes/contrib/stable/css/views/views.module.css?tduw5w285 B
/themes/contrib/stable/css/system/components/system-statu...357 B
/themes/contrib/stable/css/system/components/details.modu...167 B
/themes/contrib/stable/css/system/components/system-statu...345 B
/themes/contrib/stable/css/system/components/reset-appear...240 B
/themes/contrib/stable/css/system/components/system-statu...220 B
/themes/contrib/stable/css/system/components/item-list.mo...216 B
www.unep.org/themes/contrib/stable/css/system/components/js.module.css?tduw5w290 B
www.unep.org/themes/contrib/stable/css/system/components/align.module.css?tduw5w286 B
/themes/contrib/stable/css/system/components/tablesort.mo...269 B
cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.css6.4 KiB991 ms
/themes/contrib/stable/css/system/components/clearfix.mod...281 B
/themes/contrib/stable/css/system/components/resize.modul...211 B
/themes/contrib/stable/css/system/components/hidden.modul...683 B
/themes/contrib/stable/css/system/components/fieldgroup.m...147 B
/themes/contrib/stable/css/system/components/nowrap.modul...168 B
/themes/contrib/stable/css/system/components/container-in...215 B
/themes/contrib/stable/css/system/components/position-con...215 B
www.unep.org/themes/custom/UNEP_3Spot/css/sdg_modal.css468 B
www.unep.org/themes/custom/UNEP_3Spot/css/slick.css598 B
www.unep.org/themes/custom/UNEP_3Spot/css/slick-theme.css876 B
www.unep.org/themes/custom/UNEP_3Spot/css/easy-responsive-tabs.css1.0 KiB

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: 882 ms
URLTime Spent
unep.org/882 ms
www.unep.org/0.0 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: 0.0 ms 89.7 KiB
URLTransfer SizeEst Savings
www.unep.org/themes/custom/UNEP_3Spot/css/master.css?tduw5w73.6 KiB70.6 KiB
cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.2/css/all.css19.3 KiB19.2 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: 2.6 s 548.4 KiB
URLTransfer SizeEst Savings
t.contentsquare.net/uxa/9f13e54095441.js128.2 KiB99.6 KiB
www.googleoptimize.com/optimize.js?id=OPT-N2XPZHC108.9 KiB68.3 KiB
www.googletagmanager.com/gtag/js?id=G-1DQHHGHPWR&cx=c&gtm=4e64h1150.7 KiB66.0 KiB
www.googletagmanager.com/gtm.js?id=GTM-KGV3SQ175.7 KiB60.8 KiB
www.googletagmanager.com/gtag/js?id=G-CMH16JZ1F1&cx=c&gtm=4e64h1176.3 KiB57.8 KiB
connect.facebook.net/en_US/bundle/sdk.js/77.6 KiB54.4 KiB
cdn.mouseflow.com/projects/05364eea-c592-43cd-84d8-bfac4aace6cf.js52.6 KiB45.2 KiB
connect.facebook.net/en_US/fbevents.js96.5 KiB33.7 KiB
platform.instagram.com/en_US/embeds.js33.7 KiB33.1 KiB
/pages/versioned/common-scripts/4ce8c7df8d425cc5046457682...55.1 KiB29.4 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
Unattributable620 ms26 ms0.0 ms
www.unep.org/cdn-cgi/challenge-platform/scripts/jsd/main.js548 ms476 ms9.2 ms
www.googletagmanager.com/gtm.js?id=GTM-KGV3SQ526 ms458 ms54 ms
www.googletagmanager.com/gtag/js?id=G-CMH16JZ1F1&cx=c&gtm=4e64h1466 ms382 ms46 ms
www.unep.org/283 ms48 ms2.0 ms
/pages/versioned/common-scripts/4ce8c7df8d425cc5046457682...281 ms247 ms14 ms
use.fontawesome.com/releases/v6.5.2/js/all.js256 ms79 ms164 ms
www.unep.org/themes/custom/UNEP_3Spot/js/main.js?tduw5w250 ms183 ms61 ms
www.googletagmanager.com/gtag/js?id=G-1DQHHGHPWR&cx=c&gtm=4e64h1232 ms186 ms45 ms
www.unep.org/cdn-cgi/scripts/7d0fa10a/cloudflare-static/rocket-loader.min.js171 ms126 ms2.9 ms
/signals/config/949353062541573?v=2.9.303&r=stable&domain...164 ms143 ms21 ms
connect.facebook.net/en_US/fbevents.js152 ms109 ms41 ms
t.contentsquare.net/uxa/9f13e54095441.js125 ms81 ms40 ms
platform.twitter.com/widgets.js125 ms90 ms10 ms
connect.facebook.net/en_US/bundle/sdk.js/95 ms68 ms25 ms
www.googleoptimize.com/optimize.js?id=OPT-N2XPZHC69 ms42 ms27 ms
static.ads-twitter.com/uwt.js61 ms56 ms3.4 ms
www.google-analytics.com/analytics.js59 ms43 ms3.9 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 Evaluation3.0 s
Other793 ms
Script Parsing & Compilation626 ms
Style & Layout263 ms
Parse HTML & CSS101 ms
Garbage Collection84 ms
Rendering13 ms

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 3.3 KiB
URLTransfer SizeEst Savings
cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.2/css/all.css19.9 KiB3.3 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 4.9 KiB
URLTransfer SizeEst Savings
www.unep.org/core/misc/drupal.js?v=10.6.76.3 KiB4.9 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
cdn.unenvironment.org/2026-04/54973305839_09c4e582cb_k%20%282%29.jpg1.5 MiB
/s3fs-public/styles/article_billboard_image/public/2023-0...681.8 KiB
use.fontawesome.com/releases/v6.5.2/js/all.js502.1 KiB
/s3fs-public/styles/topics_content_promo/public/2026-04/I...473.8 KiB
/styles/topics_content_promo/s3/2026-04/coral-reef.jpg?it...347.2 KiB
/styles/topics_content_promo/s3/2026-03/peter-mitchell-lZ...332.3 KiB
/styles/topics_content_promo/s3/2026-04/AFP__20260215_96J...306.5 KiB
/s3fs-public/styles/topics_content_promo/public/2026-04/I...276.2 KiB
/styles/topics_content_promo/s3/2026-03/green 1400x630.pn...262.5 KiB
/styles/topics_content_promo/s3/2024-04/Louise Mabulo Cac...193.2 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.home_left_column > div.home_cell > div.home_cell_image > img div.home_left_column > div.home_cell > div.home_cell_image > img
cdn.unenvironment.org/2026-04/54973305839_09c4e582cb_k%20%282%29.jpg
div.home_left_column > div.home_cell > div.home_cell_image > img div.home_left_column > div.home_cell > div.home_cell_image > img
/styles/topics_content_promo/s3/2026-03/peter-mitchell-lZ...
div.home_right_column > div.home_cell > div.home_cell_image > img div.home_right_column > div.home_cell > div.home_cell_image > img
/styles/topics_content_promo/s3/2026-03/green 1400x630.pn...
div.home_right_column > div.home_cell > div.home_cell_image > img div.home_right_column > div.home_cell > div.home_cell_image > img
/styles/topics_content_promo/s3/2024-04/Louise Mabulo Cac...

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

●Layout shift culprits
●Optimize DOM size
●Forced reflow
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●User Timing marks and measures 557 user timings
●Avoid long main-thread tasks 19 long tasks found
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 130 ms
●Server Backend Latencies 480 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 80 ms
○INP breakdown
○Avoid non-composited animations
○Avoid large layout shifts
77

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

Assistive technologies, like screen readers, can't interpret ARIA attributes with invalid names. Learn more about valid ARIA attributes.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
body.en body.en
Senior Management Team div > nav#block-footergovernanceleadership > ul > li
Committee of Permanent Representatives div > nav#block-footergovernanceleadership > ul > li
Environment Assembly - UNEA div > nav#block-footergovernanceleadership > ul > li
Overview div > nav#block-footerfundingpartners > ul > li
Civil Society div > nav#block-footerfundingpartners > ul > li
Member States div > nav#block-footerfundingpartners > ul > li
Private Sector div > nav#block-footerfundingpartners > ul > li
Environment Fund div > nav#block-footerfundingpartners > ul > li
Global Environment Facility div > nav#block-footerfundingpartners > ul > li
Green Climate Fund div > nav#block-footerfundingpartners > ul > li
Centres collaborating with UNEP div > nav#block-footerfundingpartners > ul > li
Divisions and Offices div > nav#block-footerstructure > ul > li
Evaluation Office div > nav#block-footerstructure > ul > li
Secretariats and Conventions div > nav#block-footerstructure > ul > li
Annual Report div > nav#block-footerkeydocuments > ul > li
Knowledge Repository div > nav#block-footerkeydocuments > ul > li
Global Framework on Chemicals div > nav#block-footerkeydocuments > ul > li
Kunming-Montreal Global Biodiversity Framework div > nav#block-footerkeydocuments > ul > li
Medium Term Strategy, Programme of Work and Budget div > nav#block-footerkeydocuments > ul > li
Frequently Asked Questions div > nav#block-footerresources > ul > li
Environment and Social Safeguards div > nav#block-footerresources > ul > li
Intergovernmental Negotiating Committee (INC) on Plastic Pollution div > nav#block-footerresources > ul > li
Policies & Strategies div > nav#block-footerresources > ul > li
Projects – Open Data Portal div > nav#block-footerresources > ul > li
Sustainability at UNEP div > nav#block-footerresources > ul > li
Sustainable Development Goals div > nav#block-footerresources > ul > li
World Environment Situation Room div > nav#block-footerresources > ul > li
International Days div > nav#block-footercampaigns > ul > li
Beat Pollution div > nav#block-footercampaigns > ul > li
Champions of the Earth div > nav#block-footercampaigns > ul > li
Young Champions of the Earth div > nav#block-footercampaigns > ul > li
Goodwill Ambassadors and Patrons div > nav#block-footercampaigns > ul > li
UN Decade on Ecosystem Restoration div > nav#block-footercampaigns > ul > li
UNEP at 50 div > nav#block-footercampaigns > ul > li
Media Centre div > nav#block-footermedia > ul > li
Social Media div > nav#block-footermedia > ul > li
News, Stories & Speeches div > nav#block-footermedia > ul > li
Job Vacancies div > nav#block-footerworkwithus > ul > li
Calls for Proposals div > nav#block-footerworkwithus > ul > li

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.

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
SEE MORE div.home > div.home_stories > div.more_news_link > a
GOVERNANCE & LEADERSHIP div.new_footer_column > div > nav#block-footergovernanceleadership > h2#block-footergovernanceleadership-menu
Senior Management Team nav#block-footergovernanceleadership > ul > li > a
Committee of Permanent Representatives nav#block-footergovernanceleadership > ul > li > a
Environment Assembly - UNEA nav#block-footergovernanceleadership > ul > li > a
FUNDING & PARTNERS div.new_footer_column > div > nav#block-footerfundingpartners > h2#block-footerfundingpartners-menu
Overview nav#block-footerfundingpartners > ul > li > a
Civil Society nav#block-footerfundingpartners > ul > li > a
Member States nav#block-footerfundingpartners > ul > li > a
Private Sector nav#block-footerfundingpartners > ul > li > a
Environment Fund nav#block-footerfundingpartners > ul > li > a
Global Environment Facility nav#block-footerfundingpartners > ul > li > a
Green Climate Fund nav#block-footerfundingpartners > ul > li > a
Centres collaborating with UNEP nav#block-footerfundingpartners > ul > li > a
STRUCTURE div.new_footer_column > div > nav#block-footerstructure > h2#block-footerstructure-menu
Divisions and Offices nav#block-footerstructure > ul > li > a
Evaluation Office nav#block-footerstructure > ul > li > a
Secretariats and Conventions nav#block-footerstructure > ul > li > a
KEY DOCUMENTS div.new_footer_column > div > nav#block-footerkeydocuments > h2#block-footerkeydocuments-menu
Annual Report nav#block-footerkeydocuments > ul > li > a
Knowledge Repository nav#block-footerkeydocuments > ul > li > a
Global Framework on Chemicals nav#block-footerkeydocuments > ul > li > a
Kunming-Montreal Global Biodiversity Framework nav#block-footerkeydocuments > ul > li > a
Medium Term Strategy, Programme of Work and Budget nav#block-footerkeydocuments > ul > li > a
RESOURCES div.new_footer_column > div > nav#block-footerresources > h2#block-footerresources-menu
Frequently Asked Questions nav#block-footerresources > ul > li > a
Environment and Social Safeguards nav#block-footerresources > ul > li > a
Intergovernmental Negotiating Committee (INC) on Plastic Pollution nav#block-footerresources > ul > li > a
Policies & Strategies nav#block-footerresources > ul > li > a
Projects – Open Data Portal nav#block-footerresources > ul > li > a
Sustainability at UNEP nav#block-footerresources > ul > li > a
Sustainable Development Goals nav#block-footerresources > ul > li > a
World Environment Situation Room nav#block-footerresources > ul > li > a
ADVOCACY div.new_footer_column > div > nav#block-footercampaigns > h2#block-footercampaigns-menu
International Days nav#block-footercampaigns > ul > li > a
Beat Pollution nav#block-footercampaigns > ul > li > a
Champions of the Earth nav#block-footercampaigns > ul > li > a
Young Champions of the Earth nav#block-footercampaigns > ul > li > a
Goodwill Ambassadors and Patrons nav#block-footercampaigns > ul > li > a
UN Decade on Ecosystem Restoration nav#block-footercampaigns > ul > li > a
UNEP at 50 nav#block-footercampaigns > ul > li > a
MEDIA div.new_footer_column > div > nav#block-footermedia > h2#block-footermedia-menu
Media Centre nav#block-footermedia > ul > li > a
Social Media nav#block-footermedia > ul > li > a
News, Stories & Speeches nav#block-footermedia > ul > li > a
WORK WITH US div.new_footer_column > div > nav#block-footerworkwithus > h2#block-footerworkwithus-menu
Job Vacancies nav#block-footerworkwithus > ul > li > a
Calls for Proposals nav#block-footerworkwithus > ul > li > a
SUBSCRIBE TO THE UNEP NEWSLETTER div.footer_left > div.footer_left_level_1 > div.newsletter_signup > a
© 2026 UNEP Terms of Use Privacy Report Project Concern Report Scam Contact Us div.footer_left > div.footer_left_level_2 > div.menu_2 > p.terms
Terms of Use div.footer_left_level_2 > div.menu_2 > p.terms > a
Privacy div.footer_left_level_2 > div.menu_2 > p.terms > a
Report Project Concern div.footer_left_level_2 > div.menu_2 > p.terms > a
Report Scam div.footer_left_level_2 > div.menu_2 > p.terms > a
Contact Us div.footer_left_level_2 > div.menu_2 > p.terms > a

These are opportunities to improve the legibility of your content.

Navigation

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Op-ed from Jason Momoa: Coral reefs are nearing extinction. 2026 must mark a tu… div.home_stories_item > div.home_stories_item_text > a > h3

These are opportunities to improve keyboard navigation in your application.

Names and labels

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.home_left_column > div.home_cell > div.home_cell_image > img div.home_left_column > div.home_cell > div.home_cell_image > img
div.home_left_column > div.home_cell > div.home_cell_image > img div.home_left_column > div.home_cell > div.home_cell_image > img
div.home_right_column > div.home_cell > div.home_cell_image > img div.home_right_column > div.home_cell > div.home_cell_image > img
div.home_right_column > div.home_cell > div.home_cell_image > img div.home_right_column > div.home_cell > div.home_cell_image > img

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.mobile_header > div.main_nav > div.logo > a div.mobile_header > div.main_nav > div.logo > a

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

Best practices

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.js html.js

These items highlight common accessibility best practices.

○Interactive controls are keyboard focusable
○Interactive elements indicate their purpose and state
○The page has a logical tab order
○Visual order on the page follows DOM order
○User focus is not accidentally trapped in a region
○The user's focus is directed to new content added to the page
○HTML5 landmark elements are used to improve navigation
○Offscreen content is hidden from assistive technology
○Custom controls have associated labels
○Custom controls have ARIA roles
●`[aria-*]` attributes match their roles
●`[aria-hidden="true"]` is not present on the document `<body>`
●`[role]`s have all required `[aria-*]` attributes
●`[role]` values are valid
●`[aria-*]` attributes have valid values
●`[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
●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.
●Deprecated ARIA roles were not used
●ARIA IDs are unique
○`[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 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
○Buttons have an accessible name
○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
○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
○Form elements have associated labels
○Links are distinguishable without relying on color.
○The document does not use `<meta http-equiv="refresh">`
○`<object>` elements have alternate text
○Select elements have associated label elements.
○Skip links are focusable.
○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
○`[lang]` attributes have a valid value
○`<video>` elements contain a `<track>` element with `[kind="captions"]`
○Tables have different content in the summary attribute and `<caption>`.
○All heading elements contain content.
○Uses ARIA roles only on compatible elements
○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.
77

Best Practices

General

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / WarningSource
SharedStorage
www.unep.org/cdn-cgi/challenge-platform/scripts/jsd/main.js
StorageType.persistent is deprecated. Please use standardized navigator.storage instead.
www.unep.org/cdn-cgi/challenge-platform/scripts/jsd/main.js
Fledge
www.unep.org/cdn-cgi/challenge-platform/scripts/jsd/main.js
AttributionReporting
connect.facebook.net/en_US/fbevents.js line 279, col 769

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
inc522025.sched.com/js/embed.js line 66, col 6
Uncaught TypeError: Cannot read properties of null (reading 'parentNode')
unea7.sched.com/js/embed.js line 66, col 6
Uncaught TypeError: Cannot read properties of null (reading 'parentNode')

Source maps translate minified code to the original source code. This helps developers debug in production. In addition, Lighthouse is able to provide further insights. Consider deploying source maps to take advantage of these benefits. Learn more about source maps.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL
www.unep.org/themes/custom/UNEP_3Spot/js/main.js?tduw5w
●Uses HTTPS
●Avoids third-party cookies
●Allows users to paste into input fields
●Avoids requesting the geolocation permission on page load
●Avoids requesting the notification permission on page load
●Displays images with correct aspect ratio
●Serves images with appropriate resolution
●Page has the HTML doctype
●Properly defines charset
●No issues in the `Issues` panel in Chrome Devtools
●Ensure CSP is effective against XSS attacks
●Use a strong HSTS policy
●Ensure proper origin isolation with COOP
●Mitigate DOM-based XSS with Trusted Types
●Detected JavaScript libraries
○Redirects HTTP traffic to HTTPS
○Mitigate clickjacking with XFO or CSP
85

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.unep.org/news-and-storiesSEE 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
div.home_left_column > div.home_cell > div.home_cell_image > img div.home_left_column > div.home_cell > div.home_cell_image > img
div.home_left_column > div.home_cell > div.home_cell_image > img div.home_left_column > div.home_cell > div.home_cell_image > img
div.home_right_column > div.home_cell > div.home_cell_image > img div.home_right_column > div.home_cell > div.home_cell_image > img
div.home_right_column > div.home_cell > div.home_cell_image > img div.home_right_column > div.home_cell > div.home_cell_image > img

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

○Structured data is valid
●Page isn’t blocked from indexing
●Document has a `<title>` element
●Document has a meta description
●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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