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Lighthouse Desktop

· 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.

94

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.

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.

A forced reflow occurs when JavaScript queries geometric properties (such as offsetWidth) after styles have been invalidated by a change to the DOM state. This can result in poor performance. Learn more about forced reflows and possible mitigations.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:0.475 source:map[column:86058 line:21 type:source-location url:https://js.hs-analytics.net/analytics/1776813000000/5981609.js 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
In Java, communities help reconnect fragmented forests to help save the endange… div.article--slide > a > div.featured-image > img.attachment-large
/wp-content/uploads/sites/20/2025/06/18075520/Featured_In...276.6 KiB258.9 KiB
What singing lemurs can tell us about the origin of music div.article--slide > a > div.featured-image > img.attachment-large
/wp-content/uploads/sites/20/2025/01/08142549/MongabayExp...156.4 KiB142.0 KiB
Emmanuel de Merode at an airstrip near Salonga National Park in DRC in March 20… div.article--container > a > div.featured-image > img.attachment-large
/wp-content/uploads/sites/20/2026/04/10225923/drc_260324_...219.3 KiB110.5 KiB
Izzy Sasada and orangutan div.article--slide > a > div.featured-image > img.attachment-large
/wp-content/uploads/sites/20/2025/12/17132732/6_jungleSch...86.9 KiB72.5 KiB
Rangers at Gashaka Gumti National Park, Nigeria div.article--slide > a > div.featured-image > img.attachment-large
/wp-content/uploads/sites/20/2026/04/13183809/Mongabay_Fe...151.7 KiB69.5 KiB
div.article--container > a > div.featured-image > img.attachment-large div.article--container > a > div.featured-image > img.attachment-large
/wp-content/uploads/sites/20/2026/04/14211159/Caixa-d_agu...165.1 KiB56.3 KiB
Black rhinos are critically endangered. div.article--container > a > div.featured-image > img.attachment-medium
/wp-content/uploads/sites/20/2026/04/21162400/black-rhino...99.8 KiB45.8 KiB
Schaller with a peccary. Courtesy of the George B. Schaller Archive. div.article--container > a > div.featured-image > img.attachment-large
/wp-content/uploads/sites/20/2026/04/13210433/Art31_52830...131.2 KiB22.4 KiB
Ivonne Kienast at Dzanga Bai div.article--container > a > div.featured-image > img.attachment-thumbnail-medium
/wp-content/uploads/sites/20/2026/04/19152433/ivonne-kien...20.2 KiB8.9 KiB
The King River enters Macquarie Harbour, where decades of mining have contribut… div.article--container > a > div.featured-image > img.attachment-thumbnail-medium
/wp-content/uploads/sites/20/2026/04/16164414/4-King-Rive...18.1 KiB6.9 KiB
Rangers at Gashaka Gumti National Park, Nigeria div.column--60 > div.item-container > a > img.attachment-thumbnail-medium
/wp-content/uploads/sites/20/2026/04/13183809/Mongabay_Fe...18.1 KiB4.9 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-6-IMG
nodeLabel: Black rhinos are critically endangered.
path: 4,HTML,2,BODY,4,DIV,1,DIV,1,DIV,0,DIV,0,A,0,DIV,0,IMG
selector: div.article--container > a > div.featured-image > img.attachment-medium
snippet: <img src="https://imgs.mongabay.com/wp-content/uploads/sites/20/2026/04/21162400/bla…" class="attachment-medium size-medium wp-post-image" alt="Black rhinos are critically endangered." decoding="async" srcset="https://imgs.mongabay.com/wp-content/uploads/sites/20/2026/04/21162400/bla…" sizes="(max-width: 768px) 100vw, 768px">

Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.

Why this matters

Performance issues directly impact user engagement and conversion rates.

description: [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints help the browser establish a connection earlier in the page load, saving time when the first request for that origin is made. The following are the origins that the page preconnected to.
title: Preconnected origins
description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.
title: Preconnect candidates

Requests are blocking the page's initial render, which may delay LCP. Deferring or inlining can move these network requests out of the critical path.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer SizeDuration
/css2?family=Public+Sans:ital,wght@0,100..900;1,100..900&...997 B295 ms
news.mongabay.com/wp-includes/js/jquery/jquery.min.js31.0 KiB186 ms
news.mongabay.com/wp-includes/js/jquery/jquery-migrate.min.js5.1 KiB106 ms
cdn.knightlab.com/libs/soundcite/latest/css/player.css1.2 KiB250 ms
news.mongabay.com/wp-content/uploads/sites/20/tablepress-combined.min.css2.6 KiB66 ms
news.mongabay.com/wp-content/plugins/soliloquy/assets/css/soliloquy.css2.4 KiB
news.mongabay.com/wp-content/themes/mongabay_v2/css/dialog-polyfill.css494 B66 ms
news.mongabay.com/wp-content/themes/mongabay_v2/css/addtohomescreen.min.css5.2 KiB106 ms
news.mongabay.com/wp-content/plugins/progressive-wp/assets/styles/ui-offline.css348 B
news.mongabay.com/wp-content/themes/mongabay_v2/css/style.css12.3 KiB120 ms
news.mongabay.com/wp-content/themes/mongabay_v2/css/fontello.css1.1 KiB
news.mongabay.com/wp-content/themes/mongabay_v2/js/lib/slick/slick-theme.css956 B
news.mongabay.com/wp-content/themes/mongabay_v2/js/lib/slick/slick.css627 B
news.mongabay.com/wp-includes/css/dist/editor/style.min.css10.3 KiB226 ms
news.mongabay.com/wp-includes/css/dist/block-editor/style.min.css16.7 KiB266 ms
news.mongabay.com/wp-includes/css/dist/patterns/style.min.css746 B146 ms
news.mongabay.com/wp-includes/css/dist/components/style.min.css14.7 KiB266 ms
news.mongabay.com/wp-includes/css/dist/preferences/style.min.css447 B146 ms
/wp-content/plugins/drop-shadow-boxes/block/blocks.style....1.4 KiB
news.mongabay.com/wp-content/plugins/drop-shadow-boxes/css/dropshadowboxes.css1.5 KiB
news.mongabay.com/wp-includes/css/dist/reusable-blocks/style.min.css407 B146 ms

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.hs-analytics.net/analytics/1776813000000/5981609.js300.0 s42.3 KiB
/wp-content/uploads/sites/20/2026/04/10225923/drc_260324_...432000.0 s219.7 KiB
js.hubspot.com/web-interactives-embed.js600.0 s27.9 KiB
/wp-content/uploads/sites/20/2026/04/14211159/Caixa-d_agu...432000.0 s165.6 KiB
js.hs-banner.com/v2/5981609/banner.js300.0 s24.1 KiB
/wp-content/uploads/sites/20/2026/04/13183809/Mongabay_Fe...432000.0 s152.2 KiB
/wp-content/uploads/sites/20/2026/04/13210433/Art31_52830...432000.0 s131.7 KiB
www.google-analytics.com/analytics.js7200.0 s20.9 KiB
cdn.onesignal.com/sdks/OneSignalPageSDKES6.js?v=151607259200.0 s68.7 KiB
/wp-content/uploads/sites/20/2025/12/17132732/6_jungleSch...432000.0 s87.3 KiB
/wp-content/uploads/sites/20/2026/04/21092350/CBD-0021-SS...432000.0 s83.1 KiB
/wp-content/uploads/sites/20/2026/04/15120913/Photo-5-yfc...432000.0 s80.9 KiB
scripts.clarity.ms/0.8.59/clarity.js86400.0 s26.2 KiB
/wp-content/uploads/sites/20/2023/09/07134900/cow-netherl...432000.0 s67.0 KiB
/cdn-cgi/challenge-platform/h/b/scripts/jsd/0b8fb825cb67/...14400.0 s12.8 KiB
onesignal.com/sdks/OneSignalSDKStyles.css?v=23600.0 s9.5 KiB
/wp-content/uploads/sites/20/2024/07/09170628/Mario-Luna-...432000.0 s46.3 KiB
/wp-content/uploads/sites/20/2026/04/20215137/Screenshot-...432000.0 s32.5 KiB
/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312...86400.0 s10.7 KiB
/wp-content/uploads/sites/20/2026/04/17205612/WhatsApp-Im...432000.0 s21.7 KiB
/wp-content/uploads/sites/20/2026/04/19152433/ivonne-kien...432000.0 s20.5 KiB
/wp-content/uploads/sites/20/2026/04/20095612/img-481-1-3...432000.0 s18.7 KiB
/wp-content/uploads/sites/20/2026/04/16164414/4-King-Rive...432000.0 s18.4 KiB
/wp-content/uploads/sites/20/2026/04/13183809/Mongabay_Fe...432000.0 s18.4 KiB
cdn.knightlab.com/libs/soundcite/latest/js/soundcite.min.js14400.0 s3.7 KiB
/wp-content/uploads/sites/20/2026/02/25151442/Mongabay_Th...432000.0 s15.4 KiB
/wp-content/uploads/sites/20/2026/04/21211556/IMG_3726-35...432000.0 s13.4 KiB
/wp-content/uploads/sites/20/2026/02/17151209/Mongabay_Fe...432000.0 s13.4 KiB
/wp-content/uploads/sites/20/2026/04/20191807/AP261075150...432000.0 s13.2 KiB
/wp-content/uploads/sites/20/2026/03/24175738/Mongabay_Th...432000.0 s13.2 KiB
/wp-content/uploads/sites/20/2024/07/24194057/City-coyote...432000.0 s13.1 KiB
/wp-content/uploads/sites/20/2026/04/21042848/blue-flycat...432000.0 s12.9 KiB
/wp-content/uploads/sites/20/2026/03/13145116/Mongabay_Th...432000.0 s12.0 KiB
/api/v1/sync/3a782913-6b68-46c5-999b-565ead3bc689/web?cal...3600.0 s2.2 KiB
/wp-content/uploads/sites/20/2026/04/17012030/4.-Old-male...432000.0 s8.8 KiB
/wp-content/uploads/sites/20/2026/04/14102130/IMG_0208-35...432000.0 s8.2 KiB
js.hs-scripts.com/5981609.js?integration=WordPress&ver=11.3.1690.0 s1.0 KiB
/wp-content/uploads/sites/20/2026/04/21092243/CBD-0020-SS...432000.0 s5.9 KiB
cdn.knightlab.com/libs/soundcite/latest/css/player.css14400.0 s1.2 KiB
js-na1.hs-scripts.com/5981609.js0.0 ms827 B
cdn.onesignal.com/sdks/OneSignalSDK.js259200.0 s3.6 KiB
static.getclicky.com/js604800.0 s5.3 KiB

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
news.mongabay.com/wp-content/themes/mongabay_v2/fonts/fontello.woff2?9230497515 ms
news.mongabay.com/wp-content/themes/mongabay_v2/fonts/Rowan-Regular.woff15 ms

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

Redirects introduce additional delays before the page can be loaded. Learn how to avoid page redirects.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 259 ms
URLTime Spent
mongabay.com/259 ms
news.mongabay.com/0.0 ms

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 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: 40 ms 41.2 KiB
URLTransfer SizeEst Savings
news.mongabay.com/wp-includes/css/dist/block-editor/style.min.css16.6 KiB16.6 KiB
news.mongabay.com/wp-includes/css/dist/components/style.min.css14.6 KiB14.6 KiB
news.mongabay.com/wp-includes/css/dist/editor/style.min.css10.2 KiB10.1 KiB

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 2.4 KiB
URLTransfer SizeEst Savings
news.mongabay.com/wp-content/themes/mongabay_v2/css/style.css12.3 KiB2.4 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 3.9 KiB
URLTransfer SizeEst Savings
news.mongabay.com/wp-content/themes/mongabay_v2/js/lib/dialog-polyfill.js8.4 KiB3.9 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: 0.0 ms 344.9 KiB
URLTransfer SizeEst Savings
www.googletagmanager.com/gtag/js?id=G-ZHFVHJ3CMZ&cx=c&gtm=4e64k0h2154.5 KiB108.1 KiB
www.googletagmanager.com/gtag/js?id=G-C5E5Q186GT&cx=c&gtm=4e64k0h2158.6 KiB66.8 KiB
www.googletagmanager.com/gtag/js?id=G-ZHFVHJ3CMZ154.7 KiB63.4 KiB
www.googletagmanager.com/gtag/js?id=UA-12973256-1116.3 KiB62.8 KiB
cdn.onesignal.com/sdks/OneSignalPageSDKES6.js?v=15160768.2 KiB43.8 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
imgs.mongabay.com/wp-content/uploads/sites/20/2026/04/20095538/img-50-scaled.jpg828.7 KiB
imgs.mongabay.com/wp-content/uploads/sites/20/2026/04/20095531/img-15-scaled.jpg582.7 KiB
imgs.mongabay.com/wp-content/uploads/sites/20/2026/04/20095546/img-31-scaled.jpg532.9 KiB
imgs.mongabay.com/wp-content/uploads/sites/20/2026/04/20095603/img-29-scaled.jpg499.1 KiB
/wp-content/uploads/sites/20/2026/04/20095611/img-481-sca...467.8 KiB
/wp-content/uploads/sites/20/2025/06/18075520/Featured_In...277.2 KiB
imgs.mongabay.com/wp-content/uploads/sites/20/2026/04/20095621/img-40-scaled.jpg267.0 KiB
/wp-content/uploads/sites/20/2026/04/10225923/drc_260324_...219.7 KiB
/wp-content/uploads/sites/20/2026/04/14211159/Caixa-d_agu...165.6 KiB
www.googletagmanager.com/gtag/js?id=G-C5E5Q186GT&cx=c&gtm=4e64k0h2158.6 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
Rangers at Gashaka Gumti National Park, Nigeria div.column--60 > div.item-container > a > img.attachment-thumbnail-medium
/wp-content/uploads/sites/20/2026/04/13183809/Mongabay_Fe...
div.column--40 > div.item-container > a > img.attachment-thumbnail-medium div.column--40 > div.item-container > a > img.attachment-thumbnail-medium
/wp-content/uploads/sites/20/2026/04/21211556/IMG_3726-35...
A coyote in Chicago. Image courtesy of Cook County Coyote Project. div.container > div.item-container > a > img.attachment-thumbnail-medium
/wp-content/uploads/sites/20/2024/07/24194057/City-coyote...
div.container > div.branding > a.theme-light > img div.container > div.branding > a.theme-light > img
/wp-content/themes/mongabay_v2/img/logo/mongabay_logo_new...
div.container > div.branding > a.theme-light > img div.container > div.branding > a.theme-light > img
/wp-content/themes/mongabay_v2/img/logo/mongabay_logo_new...

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

●Max Potential First Input Delay 80 ms
●Layout shift culprits
●Optimize DOM size
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●User Timing marks and measures 10 user timings
●JavaScript execution time 0.6 s
●Minimizes main-thread work 1.5 s
●Avoid long main-thread tasks 2 long tasks found
●Avoid non-composited animations 1 animated element found
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 70 ms
●Server Backend Latencies 100 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 90 ms
●Avoid large layout shifts 1 layout shift found
○INP breakdown
80

Accessibility

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

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
Videos div.container > ul.main-menu > li > a
Podcasts div.container > ul.main-menu > li > a
Articles div.container > ul.main-menu > li > a
Short News div.container > ul.main-menu > li > a
Feature Stories div.container > ul.main-menu > li > a
The Latest div.container > ul.main-menu > li > a
Explore All div.container > ul.main-menu > li > a
About div.footer > ul.footer-links > li > a
Team div.footer > ul.footer-links > li > a
Contact div.footer > ul.footer-links > li > a
Donate div.footer > ul.footer-links > li > a
Subscribe page div.footer > ul.footer-links > li > a
Submissions div.footer > ul.footer-links > li > a
Privacy Policy div.footer > ul.footer-links > li > a
Terms of Use div.footer > ul.footer-links > li > a
Advertising div.footer > ul.footer-links > li > a
Wild Madagascar div.footer > ul.footer-links > li > a
For Kids div.footer > ul.footer-links > li > a
Mongabay.org div.footer > ul.footer-links > li > a
Reforestation App div.footer > ul.footer-links > li > a
Planetary Health Check div.footer > ul.footer-links > li > a
Conservation Effectiveness div.footer > ul.footer-links > li > a
Mongabay Data Studio div.footer > ul.footer-links > li > a
Latest div.container > div.column--20 > div.section-title > h4
Aimee Gabay div.article--container > a > div.post-meta > span.byline
21 Apr 2026 div.article--container > a > div.post-meta > span.date
Joseph Lee div.article--container > a > div.post-meta > span.byline
21 Apr 2026 div.article--container > a > div.post-meta > span.date
Spoorthy Raman div.article--container > a > div.post-meta > span.byline
21 Apr 2026 div.article--container > a > div.post-meta > span.date
Jen Miller, Kelly Guilbeau div.article--container > a > div.post-meta > span.byline
21 Apr 2026 div.article--container > a > div.post-meta > span.date
Alexandra Talty div.article--container > a > div.post-meta > span.byline
21 Apr 2026 div.article--container > a > div.post-meta > span.date
Luh De Suriyani div.article--container > a > div.post-meta > span.byline
21 Apr 2026 div.article--container > a > div.post-meta > span.date
Top stories div.container > div.column--60 > div.section-title > h4
Gerald Flynn div.article--container > a > div.post-meta > span.byline
20 Apr 2026 div.article--container > a > div.post-meta > span.date
Rhett Ayers Butler, David Akana div.article--container > a > div.post-meta > span.byline
19 Apr 2026 div.article--container > a > div.post-meta > span.date
Keith Anthony Fabro div.article--container > a > div.post-meta > span.byline
17 Apr 2026 div.article--container > a > div.post-meta > span.date
Stefan Lovgren div.article--container > a > div.post-meta > span.byline
16 Apr 2026 div.article--container > a > div.post-meta > span.date
More specials div.section--series-more > div.container > div.section-title > h4
Mike DiGirolamo div.article--container > div.title > div.post-meta > span.byline
14 Apr 2026 div.article--container > div.title > div.post-meta > span.date
Julia Lima, Gustavo Fonseca, Letícia Klein div.article--container > a > div.post-meta > span.byline
30 Mar 2026 div.article--container > a > div.post-meta > span.date
Thamys Trindade, Felipe Rosa, Julia Lima div.article--container > a > div.post-meta > span.byline
14 Mar 2026 div.article--container > a > div.post-meta > span.date
Romi Castagnino div.article--container > a > div.post-meta > span.byline
25 Feb 2026 div.article--container > a > div.post-meta > span.date
Rizky Maulana Yanuar, Sandy Watt div.article--container > a > div.post-meta > span.byline
18 Feb 2026 div.article--container > a > div.post-meta > span.date
News formats div.grid--4 > div > div.section-title > h4
About div.grid--4 > div > div.section-title > h4
External links div.grid--4 > div > div.section-title > h4
Social media div.grid--4 > div > div.section-title > h4

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
Asia’s longest free-flowing river contaminated by arsenic linked to Myanmar min… div.article--container > a > div.title > h3
Primate Planet div.section--highlight > div.container > div.in-column > h3
More specials div.section--series-more > div.container > div.section-title > h4
Coexisting with America’s growing urban coyote population is easier than you th… div.in-column > div.article--container > div.title > h3.text-center
Lab-made jaguar: Is cloning a solution to extinction? div.article--container > a > div.title > h3
Feature story div.featured-image > div.article--container-headline > div.title > h5
Translucent microsnail discovered in Cambodia: Photo of the week div.shorts > div.article--container > div.title > h3
News formats div.grid--4 > div > div.section-title > h4

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.container > div.branding > a.theme-light > img div.container > div.branding > a.theme-light > img
div.container > div.branding > a.theme-light > img div.container > div.branding > a.theme-light > 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
header.header > div.container > div.branding > a.theme-light header.header > div.container > div.branding > a.theme-light
header.header > div.container > div.menu-container > a#site-search header.header > div.container > div.menu-container > a#site-search
div.container > div.column--40 > div.item-container > a div.container > div.column--40 > div.item-container > a
footer.footer > div.container > div.branding > a.theme-light footer.footer > div.container > div.branding > a.theme-light

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

Best practices

Disabling zooming is problematic for users with low vision who rely on screen magnification to properly see the contents of a web page. Learn more about the viewport meta tag.

Why this matters

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

Source: MDN Permissions-Policy

Failing Elements
head > meta head > meta

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.no-js html.no-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
●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
●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
●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
○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.
○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
SharedStorage
news.mongabay.com/cdn-cgi/challenge-platform/scripts/jsd/main.js
StorageType.persistent is deprecated. Please use standardized navigator.storage instead.
news.mongabay.com/cdn-cgi/challenge-platform/scripts/jsd/main.js
Fledge
news.mongabay.com/cdn-cgi/challenge-platform/scripts/jsd/main.js
●Uses HTTPS
●Avoids third-party cookies
●Allows users to paste into input fields
●Avoids requesting the geolocation permission on page load
●Avoids requesting the notification permission on page load
●Displays images with correct aspect ratio
●Serves images with appropriate resolution
●Page has the HTML doctype
●Properly defines charset
●No browser errors logged to the console
●No issues in the `Issues` panel in Chrome Devtools
●Ensure CSP is effective against XSS attacks
●Use a strong HSTS policy
●Ensure proper origin isolation with COOP
●Mitigate clickjacking with XFO or CSP
●Mitigate DOM-based XSS with Trusted Types
●Detected JavaScript libraries
●Page has valid source maps
○Redirects HTTP traffic to HTTPS
77

SEO

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

Content Best Practices

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
news.mongabay.com/aboutLearn more
/2026/04/once-lost-now-found-five-missing-bird-species-re...here

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.container > div.branding > a.theme-light > img div.container > div.branding > a.theme-light > img
div.container > div.branding > a.theme-light > img div.container > div.branding > a.theme-light > img

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

Crawling and Indexing

Search engines may use `href` attributes on links to crawl websites. Ensure that the `href` attribute of anchor elements links to an appropriate destination, so more pages of the site can be discovered. Learn how to make links crawlable

Why this matters

Performance issues directly impact user engagement and conversion rates.

Uncrawlable Link
dialog#shorts-dialog > div.dialog-content > div.dialog-header > a.back dialog#shorts-dialog > div.dialog-content > div.dialog-header > a.back
dialog#shorts-dialog > div.dialog-content > div.dialog-header > a.close dialog#shorts-dialog > div.dialog-content > div.dialog-header > a.close
Share Short div.dialog-content > div#shorts-overview > div.dialog-footer > a.theme--button
Email div#shorts-share > div.container > div.grid--4 > a.email

To appear in search results, crawlers need access to your app.

○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
●robots.txt is valid
●Document has a valid `hreflang`
●Document has a valid `rel=canonical`

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