Skip to content
https://allaboutbirds.org

Lighthouse Mobile

· 0 checks — Mobile Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.
SCORE
0
GRADE
FIX
0
REVIEW
0
PASS
0
INFO
0

Detailed Report

Audit breakdown by category with detailed findings.

29

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.hsforms.net/forms/current.js300.0 s192.8 KiB
/signals/config/312467769453103?v=2.9.303&r=stable&domain...1200.0 s130.5 KiB
connect.facebook.net/en_US/fbevents.js1200.0 s96.6 KiB
/pagead/managed/js/activeview/current/ufs_web_display.js3600.0 s73.1 KiB
/pagead/managed/js/activeview/current/ufs_web_display.js3600.0 s73.1 KiB
/beacon/i55685555557im3uc3n3n3v091568254/cornell_lab_prod...120.0 s46.4 KiB
js.hs-analytics.net/analytics/1776901200000/95627.js300.0 s43.1 KiB
js.hubspot.com/web-interactives-embed.js600.0 s28.5 KiB
js.hs-banner.com/95627.js300.0 s18.6 KiB
www.google-analytics.com/analytics.js7200.0 s20.9 KiB
s0.2mdn.net/879366/dfa7banner_html_inpage_rendering_lib_200_268.js86400.0 s38.2 KiB
/signals/config/612522650098583?v=2.9.303&r=stable&domain...1200.0 s16.4 KiB
js.hscta.net/cta/current.js600.0 s7.1 KiB
static.hotjar.com/c/hotjar-6450235.js?sv=760.0 s6.5 KiB
s0.2mdn.net/dfp/418345/5144585034/1776110820130/320x50/images/bg1.png86400.0 s15.4 KiB
s0.2mdn.net/dfp/418345/5144585034/1776110820130/320x50/images/bg2.png86400.0 s11.2 KiB
s0.2mdn.net/dfp/418345/5144585034/1776110820130/320x50/images/bg3.png86400.0 s9.6 KiB
s0.2mdn.net/dfp/418345/5144585034/1776110820130/320x50/images/copy2.png86400.0 s4.4 KiB
allaboutbirds.disqus.com/count.js300.0 s1.5 KiB
s0.2mdn.net/dfp/418345/5144585034/1776110820130/320x50/index.js86400.0 s2.7 KiB
js.hs-scripts.com/95627.js90.0 s1.0 KiB
s0.2mdn.net/dfp/418345/5144585034/1776110820130/320x50/images/logo2.png86400.0 s2.6 KiB
s0.2mdn.net/dfp/418345/5144585034/1776110820130/320x50/images/copy1.png86400.0 s2.3 KiB
pagead2.googlesyndication.com/pagead/js/r20260422/r20110914/abg_lite_fy2021.js1209600.0 s8.4 KiB
pagead2.googlesyndication.com/pagead/js/r20260422/r20110914/abg_lite_fy2021.js1209600.0 s8.4 KiB
www.google-analytics.com/plugins/ua/ecommerce.js3600.0 s928 B
s.adroll.com/j/pre/index.js0.0 ms733 B
/consent/check/JSPA53GTXRHSPCQ5KRHY4P?pv=11686126063.7625...0.0 ms652 B
s0.2mdn.net/dfp/418345/5144585034/1776110820130/320x50/images/cta.png86400.0 s687 B
/pagead/js/r20260422/r20110914/client/window_focus_fy2021.js1209600.0 s1.2 KiB
/tr/?id=312467769453103&ev=PageView&dl=https%3A%2F%2Fwww....0.0 ms16 B
/tr/?id=612522650098583&ev=PageView&dl=https%3A%2F%2Fwww....0.0 ms16 B
/pagead/managed/js/activeview/current/ufs_web_display.js3600.0 s0 B
/pagead/managed/js/activeview/current/ufs_web_display.js3600.0 s0 B
s0.2mdn.net/879366/dfa7banner_html_inpage_rendering_lib_200_268.js86400.0 s0 B
pagead2.googlesyndication.com/pagead/js/r20260422/r20110914/abg_lite_fy2021.js1209600.0 s0 B
pagead2.googlesyndication.com/pagead/js/r20260422/r20110914/abg_lite_fy2021.js1209600.0 s0 B
s0.2mdn.net/dfp/418345/5144585034/1776110820130/320x50/images/bg1.png86400.0 s0 B
s0.2mdn.net/dfp/418345/5144585034/1776110820130/320x50/index.js86400.0 s0 B
s0.2mdn.net/dfp/418345/5144585034/1776110820130/320x50/images/bg2.png86400.0 s0 B
s0.2mdn.net/dfp/418345/5144585034/1776110820130/320x50/images/bg3.png86400.0 s0 B
s0.2mdn.net/dfp/418345/5144585034/1776110820130/320x50/images/copy2.png86400.0 s0 B
/pagead/js/r20260422/r20110914/client/window_focus_fy2021.js1209600.0 s0 B
s0.2mdn.net/dfp/418345/5144585034/1776110820130/320x50/images/logo2.png86400.0 s0 B
s0.2mdn.net/dfp/418345/5144585034/1776110820130/320x50/images/copy1.png86400.0 s0 B
s0.2mdn.net/dfp/418345/5144585034/1776110820130/320x50/images/cta.png86400.0 s0 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
/wp-content/plugins/clo-lightbox/fonts/gibson/woff2/Gibso...100 ms
/wp-content/plugins/clo-lightbox/fonts/gibson/woff2/Gibso...100 ms
/wp-content/plugins/clo-lightbox/fonts/gibson/woff2/Gibso...100 ms
/wp-content/plugins/clo-lightbox/fonts/gibson/woff2/Gibso...95 ms
/wp-content/plugins/clo-lightbox/fonts/gibson/woff2/Gibso...90 ms
/news/wp-content/themes/birdpress3/styles/fonts/gibson/wo...40 ms
/news/wp-content/themes/birdpress3/styles/fonts/gibson/wo...40 ms
/news/wp-content/themes/birdpress3/styles/fonts/gibson/wo...30 ms
/news/wp-content/themes/birdpress3/styles/fonts/suissewor...30 ms
/news/wp-content/themes/birdpress3/styles/fonts/gibson/wo...25 ms
/news/wp-content/themes/birdpress3/styles/fonts/gibson/wo...25 ms
/news/wp-content/themes/birdpress3/styles/fonts/suissewor...25 ms
/news/wp-content/themes/birdpress3/styles/fonts/fontaweso...25 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:source label:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:127.819 source:map[column:27323 line:2 type:source-location url:https://www.allaboutbirds.org/news/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 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:58.544 source:map[type:text value:[unattributed]]] map[reflowTime:0.477 source:map[column:5993 line:0 type:source-location url:https://www.allaboutbirds.org/news/wp-content/themes/birdpress3/scripts/scripts.min.js?ver=1773922077 urlProvider:network]] map[reflowTime:117.799 source:map[column:49615 line:1 type:source-location url:https://www.allaboutbirds.org/news/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 urlProvider:network]] map[reflowTime:0.466 source:map[column:51395 line:1 type:source-location url:https://www.allaboutbirds.org/news/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 urlProvider:network]] map[reflowTime:9.077 source:map[column:49637 line:1 type:source-location url:https://www.allaboutbirds.org/news/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 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-DIV
nodeLabel: main#main-content > article#article > header#hero-wrapper > div.hero-background
path: 1,HTML,1,BODY,2,DIV,2,MAIN,0,ARTICLE,0,HEADER,2,DIV
selector: main#main-content > article#article > header#hero-wrapper > div.hero-background
snippet: <div class="hero-background article-header hide-for-print mobile-stack media-image-rot…" style="background-image: url(&quot;https://www.allaboutbirds.org/news/wp-content/upload…&quot;);">

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer SizeDuration
/beacon/i55685555557im3uc3n3n3v091568254/cornell_lab_prod...46.4 KiB1.3 s
/news/wp-content/themes/birdpress3/scripts/jquery.nanogal...67.4 KiB308 ms
www.allaboutbirds.org/news/wp-includes/js/jquery/jquery-migrate.min.js?ver=3.4.15.2 KiB
www.allaboutbirds.org/news/wp-includes/js/jquery/jquery.min.js?ver=3.7.131.2 KiB154 ms
/news/wp-content/themes/birdpress3/styles/nanogallery2.mi...5.2 KiB154 ms
/news/wp-content/themes/birdpress3-aab/styles/style.css?v...12.0 KiB154 ms
/news/wp-content/themes/birdpress3/styles/style.css?ver=1...124.4 KiB1.2 s
/news/wp-includes/css/dist/block-library/style.min.css?ve...16.2 KiB
/news/wp-content/plugins/events-calendar-pro/build/css/tr...741 B
/news/wp-content/themes/birdpress3/styles/fonts/clo-webfo...932 B

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
common feeder birds and their favorite foods. Illustration by Justine Lee Hirte… div.article-item-container > div.article-item-media > figure.article-item-media-ratio > img
/news/wp-content/uploads/2013/10/CommonFeederBirds-ID-768...122.4 KiB110.7 KiB
A black and white bird with a small, sharp bill perches on a tree that has bark… div.article-item-container > div.article-item-media > figure.article-item-media-ratio > img
/news/wp-content/uploads/2025/04/314690121-Downy_Woodpeck...102.6 KiB89.2 KiB
A blue, gray and black bird sits on a peanut-filled bird feeder and holds a pea… div.article-item-container > div.article-item-media > figure.article-item-media-ratio > img
/news/wp-content/uploads/2024/08/BLue_Jay-Melissa_Rowell-...90.0 KiB76.7 KiB
A blue/purple bird at a suet feeder. div.article-item-container > div.article-item-media > figure.article-item-media-ratio > img
/news/wp-content/uploads/2009/04/Common_Grackle-Ronald_Zi...74.3 KiB61.0 KiB
gray, white and yellow birds at a feeder div.article-item-container > div.article-item-media > figure.article-item-media-ratio > img
/news/wp-content/uploads/2018/06/Yellow-rumped_Warblers-L...66.7 KiB54.3 KiB
div.article-item-container > div.article-item-media > figure.article-item-media-ratio > img div.article-item-container > div.article-item-media > figure.article-item-media-ratio > img
/news/wp-content/uploads/2023/02/Acorn_Woodpecker-Sulivan...62.0 KiB50.6 KiB
White-throated Sparrow by Kevin Pero/Macaulay Library. div.article-item-container > div.article-item-media > figure.article-item-media-ratio > img
/news/wp-content/uploads/2023/01/WTSparrow-Merlin-FI2-768...61.4 KiB50.0 KiB
body.jar > div#google_image_div > a#aw0 > img.img_ad body.jar > div#google_image_div > a#aw0 > img.img_ad
tpc.googlesyndication.com/simgad/1040256087588931185256.7 KiB44.5 KiB
a woodpecker clings to the side of a tree div.article-item-container > div.article-item-media > figure.article-item-media-ratio > img
/news/wp-content/uploads/2025/12/BBR_TreeTrunkBirds_1-1.3...45.1 KiB36.8 KiB
Living Bird Spring 2026 div.article-item-container > div.article-item-media > figure.article-item-media-ratio > img
www.allaboutbirds.org/news/wp-content/uploads/2026/03/spring2026_fe-768x576.jpg43.0 KiB35.1 KiB
A Black-and-white Warbler sits quietly and recovers after hitting a window. Pho… div.article-item-container > div.article-item-media > figure.article-item-media-ratio > img
www.allaboutbirds.org/news/wp-content/uploads/2009/04/BWWarbler-768x432.jpg46.7 KiB28.9 KiB
a group of small binoculars arranged against a white background div.article-item-container > div.article-item-media > figure.article-item-media-ratio > img
/news/wp-content/uploads/2023/08/Bino-group-1.33-768x576.jpg29.8 KiB24.3 KiB
Birds can show color variations for different reasons. This Red-breasted Nuthat… div.article-item-container > div.article-item-media > figure.article-item-media-ratio > img
www.allaboutbirds.org/news/wp-content/uploads/2009/04/RBNuthatch.jpg38.8 KiB21.0 KiB
body.jar > div#google_image_div > a#aw0 > img.img_ad body.jar > div#google_image_div > a#aw0 > img.img_ad
tpc.googlesyndication.com/simgad/882280130896839679620.3 KiB8.0 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: 2.0 s
URLTime Spent
allaboutbirds.org/899 ms
www.allaboutbirds.org/785 ms
www.allaboutbirds.org/news/330 ms
www.allaboutbirds.org/news/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: 770 ms 143.9 KiB
URLTransfer SizeEst Savings
/news/wp-content/themes/birdpress3/styles/style.css?ver=1...124.1 KiB117.8 KiB
/news/wp-includes/css/dist/block-library/style.min.css?ve...15.8 KiB15.6 KiB
/news/wp-content/themes/birdpress3-aab/styles/style.css?v...11.7 KiB10.5 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: 2.3 s 866.8 KiB
URLTransfer SizeEst Savings
/pagead/managed/js/gpt/m202604200101/pubads_impl.js?cb=31...187.7 KiB96.8 KiB
js.hsforms.net/forms/current.js185.5 KiB74.5 KiB
www.googletagmanager.com/gtag/js?id=G-CYH8S0R99B&cx=c&gtm=4e64k1173.5 KiB70.0 KiB
www.googletagmanager.com/gtag/js?id=G-QR4NVXZ8BM&cx=c&gtm=4e64k1177.7 KiB68.3 KiB
www.googletagmanager.com/gtag/destination?id=AW-967503916&cx=c&gtm=4e64k1133.9 KiB67.3 KiB
www.googletagmanager.com/gtag/js?id=G-2XDSXZH15K&cx=c&gtm=4e64k1157.6 KiB65.5 KiB
www.googletagmanager.com/gtm.js?id=GTM-P7854M175.0 KiB64.3 KiB
www.googletagmanager.com/gtag/js?id=AW-16469910333&cx=c&gtm=4e64k1141.2 KiB59.7 KiB
code.jquery.com/ui/1.12.1/jquery-ui.min.js66.2 KiB57.5 KiB
/news/wp-content/themes/birdpress3/scripts/jquery.nanogal...67.1 KiB38.5 KiB
/signals/config/312467769453103?v=2.9.303&r=stable&domain...130.4 KiB35.7 KiB
connect.facebook.net/en_US/fbevents.js96.5 KiB32.3 KiB
/pagead/managed/js/activeview/current/ufs_web_display.js73.1 KiB31.8 KiB
/pagead/managed/js/activeview/current/ufs_web_display.js73.1 KiB31.7 KiB
/news/wp-content/themes/birdpress3/scripts/foundation.min...38.5 KiB27.0 KiB
script.hotjar.com/modules.6a0f3932cb1341a35c18.js56.1 KiB23.6 KiB
s.adroll.com/j/roundtrip.js28.4 KiB22.4 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
/pagead/managed/js/gpt/m202604200101/pubads_impl.js?cb=31...1.2 s899 ms83 ms
Unattributable1.0 s74 ms0.0 ms
www.allaboutbirds.org/news/1.0 s54 ms8.7 ms
www.allaboutbirds.org/news/wp-includes/js/jquery/jquery.min.js?ver=3.7.11.0 s391 ms7.0 ms
/pagead/managed/js/activeview/current/ufs_web_display.js659 ms495 ms57 ms
js.hs-analytics.net/analytics/1776901200000/95627.js566 ms434 ms8.7 ms
www.googletagmanager.com/gtm.js?id=GTM-P7854M528 ms412 ms51 ms
script.hotjar.com/modules.6a0f3932cb1341a35c18.js517 ms454 ms18 ms
/news/wp-content/themes/birdpress3/scripts/jquery.nanogal...370 ms83 ms22 ms
www.googletagmanager.com/gtag/js?id=G-CYH8S0R99B&cx=c&gtm=4e64k1354 ms295 ms51 ms
www.googletagmanager.com/gtag/js?id=G-QR4NVXZ8BM&cx=c&gtm=4e64k1349 ms291 ms55 ms
js.hsforms.net/forms/current.js329 ms225 ms84 ms
/signals/config/312467769453103?v=2.9.303&r=stable&domain...276 ms240 ms35 ms
www.googletagmanager.com/gtag/js?id=G-2XDSXZH15K&cx=c&gtm=4e64k1267 ms219 ms45 ms
www.googletagmanager.com/gtag/js?id=AW-16469910333&cx=c&gtm=4e64k1252 ms199 ms50 ms
/beacon/i55685555557im3uc3n3n3v091568254/cornell_lab_prod...199 ms174 ms17 ms
/news/wp-content/themes/birdpress3/scripts/foundation.min...165 ms42 ms20 ms
www.googletagmanager.com/gtag/destination?id=AW-967503916&cx=c&gtm=4e64k1151 ms122 ms28 ms
connect.facebook.net/en_US/fbevents.js146 ms107 ms38 ms
www.googletagservices.com/tag/js/gpt.js71 ms62 ms8.0 ms
s.adroll.com/j/roundtrip.js63 ms53 ms6.7 ms
/safeframe/1-0-45/html/container.html59 ms0.1 ms0.0 ms
js.hubspot.com/web-interactives-embed.js57 ms45 ms9.2 ms
/signals/config/612522650098583?v=2.9.303&r=stable&domain...57 ms45 ms9.1 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 Evaluation5.7 s
Other1.7 s
Style & Layout1.4 s
Script Parsing & Compilation762 ms
Parse HTML & CSS202 ms
Garbage Collection184 ms
Rendering117 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
Pages with WebSocket cannot enter back/forward cache.Pending browser support

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
/wp-content/uploads/2026/04/bow_costas-hummingbird-2x3_v3...653.4 KiB
/news/wp-content/uploads/2024/02/50787721-Coopers_Hawk-Ev...593.9 KiB
js.hsforms.net/forms/current.js192.8 KiB
/pagead/managed/js/gpt/m202604200101/pubads_impl.js?cb=31...187.7 KiB
www.googletagmanager.com/gtag/js?id=G-QR4NVXZ8BM&cx=c&gtm=4e64k1177.8 KiB
www.googletagmanager.com/gtm.js?id=GTM-P7854M175.4 KiB
www.googletagmanager.com/gtag/js?id=G-CYH8S0R99B&cx=c&gtm=4e64k1173.5 KiB
www.googletagmanager.com/gtag/js?id=G-2XDSXZH15K&cx=c&gtm=4e64k1157.7 KiB
www.googletagmanager.com/gtag/js?id=AW-16469910333&cx=c&gtm=4e64k1141.3 KiB
www.googletagmanager.com/gtag/destination?id=AW-967503916&cx=c&gtm=4e64k1133.9 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
Cornell Lab | All About Birds div.website-identity > div.lab-logo > a > img.hide-for-medium
/news/wp-content/uploads/2024/02/clo_allaboutbirds_short.svg
Cornell Lab div#frigatebird-wrapper > div.frigatebird-row > div.frigatebird-column > img.logo
/wp-content/plugins/clo-lightbox/logos/clo_birdsoftheworl...

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

●Layout shift culprits
●Optimize DOM size
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●Minify JavaScript
●User Timing marks and measures 15 user timings
●Avoid long main-thread tasks 20 long tasks found
●Avoid non-composited animations 24 animated elements found
●Network Requests
●Network Round Trip Times 120 ms
●Server Backend Latencies 160 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 210 ms
●Avoid large layout shifts 1 layout shift found
○INP breakdown
100

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.

○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
●Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
●`[aria-hidden="true"]` elements do not contain focusable descendents
●Elements use only permitted ARIA attributes
●Background and foreground colors have a sufficient contrast ratio
●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
●Skip links are focusable.
●Document has a main landmark.
●Deprecated ARIA roles were not used
●Uses ARIA roles only on compatible elements
●Identical links have the same purpose.
○`[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
○`<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
○`<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.
○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.
○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.
58

Best Practices

Trust and Safety

All sites should be protected with HTTPS, even ones that don't handle sensitive data. This includes avoiding mixed content, where some resources are loaded over HTTP despite the initial request being served over HTTPS. HTTPS prevents intruders from tampering with or passively listening in on the communications between your app and your users, and is a prerequisite for HTTP/2 and many new web platform APIs. Learn more about HTTPS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Insecure URLRequest Resolution
www.allaboutbirds.org/news/Allowed

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
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
/news/wp-content/plugins/disqus-comment-system/public/js/... line 37, col 16
Could not find 'disqus_thread' container to load DISQUS. This is usually the result of a WordPress theme conflicting with the DISQUS plugin. Try switching your site to a Classic Theme, or contact DISQUS support for help.
●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 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
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.

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
× body.home > section#frigatebird > div#frigatebird-container > a#frigatebird-close

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
●Links have descriptive text
●robots.txt is valid
●Image elements have `[alt]` attributes
●Document has a valid `hreflang`
●Document has a valid `rel=canonical`

Send Feedback