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

Audit breakdown by category with detailed findings.

70

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
www.noaa.gov/themes/custom/noaa_guswds/dist/css/styles.css?tdvn913600.0 s614.6 KiB
/sites/default/files/styles/square_width_325/public/2021-...3600.0 s210.1 KiB
/sites/default/files/styles/square_width_325/public/2021-...3600.0 s186.7 KiB
/sites/default/files/styles/square_width_325/public/2021-...3600.0 s182.0 KiB
/sites/default/files/styles/square_width_325/public/2021-...3600.0 s143.7 KiB
/sites/default/files/styles/square_width_325/public/2021-...3600.0 s127.3 KiB
/sites/default/files/styles/square_width_325/public/2021-...3600.0 s107.7 KiB
/sites/default/files/styles/square_width_325/public/2021-...3600.0 s106.1 KiB
/sites/default/files/styles/square_width_325/public/2021-...3600.0 s101.8 KiB
/sites/default/files/styles/square_width_325/public/2021-...3600.0 s81.7 KiB
siteimproveanalytics.com/js/siteanalyze_6294131.js86400.0 s105.4 KiB
www.noaa.gov/core/assets/vendor/jquery.ui/themes/base/theme.css?tdvn913600.0 s17.7 KiB
www.noaa.gov/themes/custom/noaa_guswds/dist/css/back-to-top.css?tdvn913600.0 s17.7 KiB
/Universal-Federated-Analytics-Min.js?agency=DOC&subagenc...0.0 ms9.4 KiB
/sites/default/files/styles/square_width_160/public/2021-...3600.0 s7.8 KiB
/sites/default/files/styles/square_width_160/public/2021-...3600.0 s7.0 KiB
/sites/default/files/styles/square_width_160/public/2021-...3600.0 s6.7 KiB
www.noaa.gov/libraries/tooltipster/dist/css/tooltipster.bundle.min.css?tdvn913600.0 s6.7 KiB
/sites/default/files/styles/square_width_160/public/2021-...3600.0 s6.5 KiB
/sites/default/files/styles/square_width_160/public/2021-...3600.0 s6.4 KiB
/sites/default/files/styles/square_width_160/public/2021-...3600.0 s5.2 KiB
/sites/default/files/styles/square_width_160/public/2021-...3600.0 s5.1 KiB
www.noaa.gov/libraries/owlcarousel2/dist/assets/owl.carousel.css?tdvn913600.0 s5.0 KiB
/sites/default/files/styles/square_width_160/public/2021-...3600.0 s4.9 KiB
/sites/default/files/styles/square_width_160/public/2021-...3600.0 s4.6 KiB
www.noaa.gov/core/assets/vendor/jquery.ui/themes/base/dialog.css?tdvn913600.0 s2.1 KiB
www.noaa.gov/core/assets/vendor/jquery.ui/themes/base/core.css?tdvn913600.0 s1.9 KiB
www.noaa.gov/core/assets/vendor/jquery.ui/themes/base/controlgroup.css?tdvn913600.0 s1.8 KiB
www.noaa.gov/core/assets/vendor/jquery.ui/themes/base/button.css?tdvn913600.0 s1.7 KiB
www.noaa.gov/libraries/owlcarousel2/dist/assets/owl.theme.default.css?tdvn913600.0 s1.7 KiB
/modules/contrib/ckeditor5_plugin_pack/modules/ckeditor5_...3600.0 s1.6 KiB
www.noaa.gov/core/assets/vendor/jquery.ui/themes/base/resizable.css?tdvn913600.0 s1.5 KiB
www.noaa.gov/core/misc/components/ajax-progress.module.css?tdvn913600.0 s1.3 KiB
www.noaa.gov/core/misc/components/progress.module.css?tdvn913600.0 s1.2 KiB
www.noaa.gov/core/assets/vendor/jquery.ui/themes/base/checkboxradio.css?tdvn913600.0 s1.1 KiB
www.noaa.gov/core/modules/system/css/components/system-status-counter.css?tdvn913600.0 s1.1 KiB
www.noaa.gov/core/modules/system/css/components/js.module.css?tdvn913600.0 s1.0 KiB
/core/modules/system/css/components/system-status-report-...3600.0 s942 B
www.noaa.gov/core/modules/views/css/views.module.css?tdvn913600.0 s817 B
www.noaa.gov/core/modules/system/css/components/tablesort.module.css?tdvn913600.0 s747 B
www.noaa.gov/modules/contrib/citation_select/css/citation_select.css?tdvn913600.0 s704 B
www.noaa.gov/themes/custom/noaa_guswds/dist/images/us_flag_small.png3600.0 s683 B
www.noaa.gov/core/modules/system/css/components/item-list.module.css?tdvn913600.0 s670 B
/core/modules/system/css/components/container-inline.modu...3600.0 s657 B
www.noaa.gov/core/modules/system/css/components/resize.module.css?tdvn913600.0 s653 B
/core/modules/system/css/components/system-status-report-...3600.0 s638 B
/core/modules/system/css/components/reset-appearance.modu...3600.0 s632 B
www.noaa.gov/core/modules/system/css/components/details.module.css?tdvn913600.0 s509 B
www.noaa.gov/core/modules/system/css/components/nowrap.module.css?tdvn913600.0 s478 B
www.noaa.gov/core/modules/system/css/components/fieldgroup.module.css?tdvn913600.0 s477 B
/core/modules/system/css/components/position-container.mo...3600.0 s475 B
www.noaa.gov/modules/custom/noaa_core/css/touchpoints.css?tdvn913600.0 s448 B
www.noaa.gov/modules/contrib/paragraphs/css/paragraphs.unpublished.css?tdvn913600.0 s440 B
www.noaa.gov/core/modules/ckeditor5/css/ckeditor5.dialog.fix.css?tdvn913600.0 s438 B

Layout shifts occur when elements move absent any user interaction. Investigate the causes of layout shifts, such as elements being added, removed, or their fonts changing as the page loads.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:node label:Element subItemsHeading:map[key:extra] valueType:node] map[granularity:0.001 key:score label:Layout shift score subItemsHeading:map[key:cause valueType:text] valueType:numeric]]
items: [map[node:map[type:text value:Total] score:0.111765] map[node:map[boundingRect:map[bottom:672 height:600 left:65 right:1350 top:72 width:1285] lhId:page-0-IMG nodeLabel:iceberg path:1,HTML,1,BODY,3,DIV,0,DIV,1,DIV,2,DIV,0,DIV,0,DIV,0,DIV,0,IMG selector:div.c-field > div.c-field__content > div.c-field__item > img snippet:<img loading="eager" srcset="/sites/default/files/styles/background_landing_page_focus_area_height_402/…" sizes="100vw" width="1437" height="600" src="https://www.noaa.gov/sites/default/files/styles/background_landing_page_fo…" alt="iceberg"> type:node] score:0.111306] map[node:map[boundingRect:map[bottom:632 height:66 left:148 right:349 top:566 width:202] lhId:page-1-H1 nodeLabel:Climate path:1,HTML,1,BODY,3,DIV,0,DIV,1,DIV,2,DIV,1,HEADER,0,DIV,5,DIV,0,DIV,0,ARTICLE,0,DIV,0,DIV,0,DIV,0,H1 selector:div.c-field > div.c-field__content > div.c-field__item > h1 snippet:<h1> type:node] score:0.000365 subItems:map[items:[map[cause:Web font extra:map[type:url value:https://fonts.gstatic.com/s/nunitosans/v19/pe0TMImSLYBIv1o4X1M8ce2xCx3yop4tQpF_MeTm0lfGWVpNn64CL7U8upHZIbMV51Q42ptCp7t1R-tQKr51.woff2]] map[cause:Web font extra:map[type:url value:https://fonts.gstatic.com/s/nunitosans/v19/pe0RMImSLYBIv1o4X1M8cce4OdVisMz5nZRqy6cmmmU3t2FQWEAEOvV9wNvrwlNstMKW3Y6K5WMwd-laLZx3lE4.woff2]]] type:subitems]] map[node:map[boundingRect:map[bottom:932 height:44 left:1101 right:1329 top:888 width:228] lhId:page-10-BUTTON nodeLabel:Help improve this site path:1,HTML,1,BODY,93,DIV,0,BUTTON selector:body#top--zUOAQWbzbGs > div > button#fba-button snippet:<button id="fba-button" data-id="1f162941" class="fba-button fixed-tab-button usa-button fba-initialized" name="fba-button" aria-label="Help improve this site" aria-haspopup="dialog" aria-controls="fba-modal-1f162941" data-open-modal=""> type:node] score:9.4e-05 subItems:map[items:[map[cause:Web font extra:map[type:url value:https://www.noaa.gov/themes/custom/noaa_guswds/dist/fonts/e7bccfa631a0017f31da.woff2]] map[cause:Web font extra:map[type:url value:https://www.noaa.gov/themes/custom/noaa_guswds/dist/fonts/4a1efbe82eaa84ff89ed.woff2]]] type:subitems]]]

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:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:32.158 source:map[column:22 line:19 type:source-location url:https://www.noaa.gov/core/misc/drupal.init.js?v=10.6.5 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:33.896 source:map[type:text value:[unattributed]]] map[reflowTime:28.093 source:map[column:49615 line:1 type:source-location url:https://www.noaa.gov/core/assets/vendor/jquery/jquery.min.js?v=3.7.1 urlProvider:network]] map[reflowTime:0.234 source:map[column:50335 line:1 type:source-location url:https://www.noaa.gov/core/assets/vendor/jquery/jquery.min.js?v=3.7.1 urlProvider:network]] map[reflowTime:0.185 source:map[column:50393 line:1 type:source-location url:https://www.noaa.gov/core/assets/vendor/jquery/jquery.min.js?v=3.7.1 urlProvider:network]] map[reflowTime:0.139 source:map[column:50457 line:1 type:source-location url:https://www.noaa.gov/core/assets/vendor/jquery/jquery.min.js?v=3.7.1 urlProvider:network]] map[reflowTime:3.127 source:map[column:49637 line:1 type:source-location url:https://www.noaa.gov/core/assets/vendor/jquery/jquery.min.js?v=3.7.1 urlProvider:network]] map[reflowTime:0.245 source:map[column:51395 line:1 type:source-location url:https://www.noaa.gov/core/assets/vendor/jquery/jquery.min.js?v=3.7.1 urlProvider:network]] map[reflowTime:0.135 source:map[column:290 line:0 type:source-location url:https://www.noaa.gov/themes/custom/noaa_guswds/dist/js/universal.es6.js?tdvn91 urlProvider:network]]]

Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-0-IMG
nodeLabel: iceberg
path: 1,HTML,1,BODY,3,DIV,0,DIV,1,DIV,2,DIV,0,DIV,0,DIV,0,DIV,0,IMG
selector: div.c-field > div.c-field__content > div.c-field__item > img
snippet: <img loading="eager" srcset="/sites/default/files/styles/background_landing_page_focus_area_height_402/…" sizes="100vw" width="1437" height="600" src="https://www.noaa.gov/sites/default/files/styles/background_landing_page_fo…" alt="iceberg">

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
value: No additional origins are good candidates for preconnecting

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.noaa.gov/modules/contrib/google_tag/js/gtag.js?tdvn911.8 KiB
www.noaa.gov/core/misc/drupalSettingsLoader.js?v=10.6.51.1 KiB
/css?family=Source+Sans+Pro:300,300i,400,400i,600,600i,70...1.5 KiB66 ms
www.noaa.gov/themes/custom/noaa_guswds/dist/css/styles.css?tdvn91614.6 KiB614 ms
www.noaa.gov/themes/custom/noaa_guswds/dist/css/back-to-top.css?tdvn9117.7 KiB
www.noaa.gov/libraries/owlcarousel2/dist/assets/owl.carousel.css?tdvn915.0 KiB
www.noaa.gov/modules/custom/noaa_media_library/js/freezeframe.min.js?tdvn9124.9 KiB
www.noaa.gov/core/modules/system/css/components/tablesort.module.css?tdvn91747 B
www.noaa.gov/modules/contrib/google_tag/js/gtm.js?tdvn911.6 KiB
www.noaa.gov/core/assets/vendor/jquery.ui/themes/base/core.css?tdvn911.9 KiB
www.noaa.gov/libraries/tooltipster/dist/css/tooltipster.bundle.min.css?tdvn916.7 KiB
www.noaa.gov/core/modules/views/css/views.module.css?tdvn91817 B
/core/modules/system/css/components/system-status-report-...638 B
www.noaa.gov/modules/contrib/paragraphs/css/paragraphs.unpublished.css?tdvn91440 B
www.noaa.gov/core/modules/ckeditor5/css/ckeditor5.dialog.fix.css?tdvn91438 B
www.noaa.gov/libraries/owlcarousel2/dist/assets/owl.theme.default.css?tdvn911.7 KiB
www.noaa.gov/modules/custom/noaa_core/css/touchpoints.css?tdvn91448 B
/modules/contrib/ckeditor5_plugin_pack/modules/ckeditor5_...1.6 KiB
www.noaa.gov/modules/contrib/citation_select/css/citation_select.css?tdvn91704 B
www.noaa.gov/core/assets/vendor/jquery.ui/themes/base/theme.css?tdvn9117.7 KiB
/core/modules/system/css/components/system-status-report-...942 B
/core/modules/system/css/components/reset-appearance.modu...632 B
www.noaa.gov/core/modules/system/css/components/details.module.css?tdvn91509 B
www.noaa.gov/core/misc/components/ajax-progress.module.css?tdvn911.3 KiB
www.noaa.gov/core/modules/system/css/components/system-status-counter.css?tdvn911.1 KiB
www.noaa.gov/core/modules/system/css/components/fieldgroup.module.css?tdvn91477 B
/core/modules/system/css/components/position-container.mo...475 B
www.noaa.gov/core/modules/system/css/components/js.module.css?tdvn911.0 KiB
www.noaa.gov/core/modules/system/css/components/resize.module.css?tdvn91653 B
www.noaa.gov/core/modules/system/css/components/nowrap.module.css?tdvn91478 B
www.noaa.gov/core/modules/system/css/components/item-list.module.css?tdvn91670 B
/core/modules/system/css/components/container-inline.modu...657 B
www.noaa.gov/core/misc/components/progress.module.css?tdvn911.2 KiB
www.noaa.gov/core/assets/vendor/jquery.ui/themes/base/dialog.css?tdvn912.1 KiB
www.noaa.gov/core/assets/vendor/jquery.ui/themes/base/button.css?tdvn911.7 KiB
www.noaa.gov/core/assets/vendor/jquery.ui/themes/base/resizable.css?tdvn911.5 KiB
www.noaa.gov/core/assets/vendor/jquery.ui/themes/base/checkboxradio.css?tdvn911.1 KiB
www.noaa.gov/core/assets/vendor/jquery.ui/themes/base/controlgroup.css?tdvn911.8 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
www.noaa.gov/themes/custom/noaa_guswds/dist/fonts/4a1efbe82eaa84ff89ed.woff210 ms
www.noaa.gov/themes/custom/noaa_guswds/dist/fonts/e7bccfa631a0017f31da.woff25.0 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
Young children gather around a Van de Graaff machine, a metal structure with a … div.c-field > div.c-field__content > div.c-field__item > img
/sites/default/files/styles/square_width_325/public/2021-...209.5 KiB192.3 KiB
School of fish div.c-field > div.c-field__content > div.c-field__item > img
/sites/default/files/styles/square_width_325/public/2021-...186.1 KiB179.0 KiB
Ocean research platform div.c-field > div.c-field__content > div.c-field__item > img
/sites/default/files/styles/square_width_325/public/2021-...181.4 KiB174.3 KiB
Rocky coast div.c-field > div.c-field__content > div.c-field__item > img
/sites/default/files/styles/square_width_325/public/2021-...143.1 KiB136.1 KiB
sea turtle div.c-field > div.c-field__content > div.c-field__item > img
/sites/default/files/styles/square_width_325/public/2021-...126.7 KiB109.5 KiB
Satellite div.c-field > div.c-field__content > div.c-field__item > img
/sites/default/files/styles/square_width_325/public/2021-...101.3 KiB94.2 KiB
This graphic shows an electronic navigation chart imposed over a picture of a b… div.c-field > div.c-field__content > div.c-field__item > img
/sites/default/files/styles/square_width_325/public/2021-...107.1 KiB90.0 KiB
research airplane div.c-field > div.c-field__content > div.c-field__item > img
/sites/default/files/styles/square_width_325/public/2021-...105.6 KiB88.4 KiB
lightning in clouds div.c-field > div.c-field__content > div.c-field__item > img
/sites/default/files/styles/square_width_325/public/2021-...81.2 KiB74.2 KiB
collage student photo contest div.c-field > div.c-field__content > div.c-field__item > img
/sites/default/files/styles/landscape_width_650px_webp/pu...53.5 KiB43.3 KiB
A deep sea lizard sits on the ocean floor div.c-field > div.c-field__content > div.c-field__item > img
/sites/default/files/styles/landscape_width_650px_webp/pu...42.9 KiB31.9 KiB
A man in a red shirt splashes water on his face from a sculpted fountain in Rom… div.c-field > div.c-field__content > div.c-field__item > img
/sites/default/files/styles/landscape_width_650px_webp/pu...31.9 KiB22.8 KiB
Sunrise over Earth. div.c-field > div.c-field__content > div.c-field__item > img
/sites/default/files/styles/landscape_width_650px_webp/pu...21.9 KiB15.7 KiB
Education focus area icon div.c-field > div.c-field__content > div.c-field__item > img
/sites/default/files/styles/square_width_160/public/2021-...7.3 KiB6.3 KiB
Marine and Aviation focus area icon div.c-field > div.c-field__content > div.c-field__item > img
/sites/default/files/styles/square_width_160/public/2021-...6.6 KiB5.6 KiB
Charting focus area icon div.c-field > div.c-field__content > div.c-field__item > img
/sites/default/files/styles/square_width_160/public/2021-...6.3 KiB5.3 KiB
Satellites focus area icon div.c-field > div.c-field__content > div.c-field__item > img
/sites/default/files/styles/square_width_160/public/2021-...6.1 KiB5.0 KiB
Sanctuaries focus area icon div.c-field > div.c-field__content > div.c-field__item > img
/sites/default/files/styles/square_width_160/public/2021-...5.9 KiB4.9 KiB

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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 770 ms
URLTime Spent
climate.gov/498 ms
www.climate.gov/272 ms
www.noaa.gov/climate0.0 ms

These are the largest layout shifts observed on the page. Each table item represents a single layout shift, and shows the element that shifted the most. Below each item are possible root causes that led to the layout shift. Some of these layout shifts may not be included in the CLS metric value due to windowing. Learn how to improve CLS

Why this matters

Performance issues directly impact user engagement and conversion rates.

ElementLayout shift score
iceberg div.c-field > div.c-field__content > div.c-field__item > img
0.111
Climate div.c-field > div.c-field__content > div.c-field__item > h1
0.000
Help improve this site body#top--zUOAQWbzbGs > div > button#fba-button
0.000

Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

Diagnostics

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: 120 ms 231.2 KiB
URLTransfer SizeEst Savings
www.noaa.gov/modules/custom/noaa_weather/js/handlebars-v4.0.4.js?tdvn91155.8 KiB57.6 KiB
www.noaa.gov/core/misc/ajax.js?v=10.6.565.0 KiB45.6 KiB
www.noaa.gov/libraries/owlcarousel2/dist/owl.carousel.js?tdvn9187.9 KiB35.3 KiB
www.noaa.gov/core/misc/jquery.form.js?v=4.3.040.9 KiB19.0 KiB
www.noaa.gov/core/misc/drupal.js?v=10.6.520.6 KiB16.2 KiB
www.noaa.gov/core/misc/position.js?v=10.6.522.0 KiB11.9 KiB
touchpoints.app.cloud.gov/touchpoints/1f162941.js79.8 KiB9.6 KiB
www.noaa.gov/modules/custom/noaa_weather/js/noaa_weather.js?tdvn9121.3 KiB6.1 KiB
www.noaa.gov/core/misc/dialog/dialog.ajax.js?v=10.6.510.1 KiB6.0 KiB
www.noaa.gov/core/misc/displace.js?v=10.6.57.9 KiB5.7 KiB
www.noaa.gov/core/misc/message.js?v=10.6.58.2 KiB5.5 KiB
www.noaa.gov/core/misc/progress.js?v=10.6.55.1 KiB3.3 KiB
www.noaa.gov/core/misc/announce.js?v=10.6.54.2 KiB3.2 KiB
www.noaa.gov/core/misc/dialog/dialog.js?v=10.6.53.4 KiB2.1 KiB
www.noaa.gov/core/misc/dialog/dialog.position.js?v=10.6.54.2 KiB2.0 KiB
www.noaa.gov/libraries/superclick/src/js/superclick.js?tdvn917.1 KiB2.0 KiB

Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 450 ms 598.8 KiB
URLTransfer SizeEst Savings
www.noaa.gov/themes/custom/noaa_guswds/dist/css/styles.css?tdvn91613.6 KiB516.2 KiB
.fba-modal-dialog { font-family: Source Sans Pro Web, Helvetica Neue, Helvetica, Roboto, Arial, sa… } …52.1 KiB49.5 KiB
www.noaa.gov/core/assets/vendor/jquery.ui/themes/base/theme.css?tdvn9117.3 KiB16.9 KiB
www.noaa.gov/themes/custom/noaa_guswds/dist/css/back-to-top.css?tdvn9117.3 KiB16.3 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: 200 ms 791.3 KiB
URLTransfer SizeEst Savings
www.noaa.gov/themes/custom/noaa_guswds/dist/js/common.js?tdvn91125.8 KiB125.0 KiB
www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L&cx=c&gtm=4e64k1147.0 KiB105.8 KiB
www.noaa.gov/modules/custom/noaa_weather/js/handlebars-v4.0.4.js?tdvn91155.8 KiB103.3 KiB
siteimproveanalytics.com/js/siteanalyze_6294131.js104.7 KiB66.8 KiB
www.googletagmanager.com/gtm.js?id=GTM-MNK3D2L128.1 KiB64.8 KiB
www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L147.0 KiB63.9 KiB
www.noaa.gov/libraries/owlcarousel2/dist/owl.carousel.js?tdvn9187.9 KiB62.9 KiB
www.googletagmanager.com/gtag/js?id=G-FVJXY24VSZ148.0 KiB61.1 KiB
www.noaa.gov/libraries/tooltipster/dist/js/tooltipster.bundle.min.js?tdvn9139.0 KiB35.3 KiB
www.noaa.gov/core/assets/vendor/jquery/jquery.min.js?v=3.7.185.5 KiB34.9 KiB
www.noaa.gov/core/misc/ajax.js?v=10.6.565.0 KiB33.9 KiB
www.noaa.gov/core/misc/jquery.form.js?v=4.3.040.9 KiB33.4 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 9.5 KiB
URLTransfer SizeEst Savings
.fba-modal-dialog { font-family: Source Sans Pro Web, Helvetica Neue, Helvetica, Roboto, Arial, sa… } …52.1 KiB5.6 KiB
www.noaa.gov/core/assets/vendor/jquery.ui/themes/base/theme.css?tdvn9117.7 KiB3.8 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
www.noaa.gov/themes/custom/noaa_guswds/dist/css/styles.css?tdvn91614.6 KiB
/sites/default/files/styles/square_width_325/public/2021-...210.1 KiB
/sites/default/files/styles/square_width_325/public/2021-...186.7 KiB
/sites/default/files/styles/square_width_325/public/2021-...182.0 KiB
www.noaa.gov/modules/custom/noaa_weather/js/handlebars-v4.0.4.js?tdvn91156.4 KiB
www.googletagmanager.com/gtag/js?id=G-FVJXY24VSZ148.3 KiB
www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L147.1 KiB
www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L&cx=c&gtm=4e64k1147.0 KiB
/sites/default/files/styles/square_width_325/public/2021-...143.7 KiB
www.googletagmanager.com/gtm.js?id=GTM-MNK3D2L128.2 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
NOAA logo div.l-constrain > div#block-noaa-guswds-branding > a.c-site-logo > img.c-site-logo__image
www.noaa.gov/themes/custom/noaa_guswds/images/noaa_digital_logo.svg
National Oceanic and Atmospheric Administration logo header > h1#fba-form-title-1f162941 > div.margin-bottom-2 > img.form-header-logo-square
/uploads/form/logo/3708/logo_square_NOAA-logo.jpg
U.S. flag header.usa-banner__header > div.usa-banner__inner > div.grid-col-auto > img.usa-banner__header-flag
www.noaa.gov/themes/custom/noaa_guswds/dist/images/us_flag_small.png
U.S. flag footer.usa-banner__header > div.usa-banner__inner > div.grid-col-auto > img.usa-banner__header-flag
touchpoints.app.cloud.gov/img/us_flag_small.png

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

●Optimize DOM size
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●Max Potential First Input Delay 40 ms
●User Timing marks and measures 10 user timings
●JavaScript execution time 0.1 s
●Minimizes main-thread work 0.8 s
●Avoid long main-thread tasks 1 long task found
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 170 ms
●Server Backend Latencies 70 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 30 ms
○INP breakdown
○Avoid non-composited animations
93

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
From 1980 to August 2024, the U.S. has experienced 396 weather and climate disa… div.c-field > div.c-field__content > div.c-field__item > p
EDUCATION div.c-view__row > article.image-link > header > a
SANCTUARIES div.c-view__row > article.image-link > header > a
CHARTING div.c-view__row > article.image-link > header > a
MARINE & AVIATION div.c-view__row > article.image-link > header > a

These are opportunities to improve the legibility of your content.

Best practices

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
U.S. Department of Commerce header.l-header > div.l-constrain > div#block-noaa-guswds-branding > a.c-site-slogan

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
●`[aria-*]` attributes are valid and not misspelled
●Buttons have an accessible name
●Image elements have `[alt]` attributes
●Input buttons have discernible text.
●Form elements have associated labels
●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
●ARIA attributes are used as specified for the element's role
●`[aria-hidden="true"]` elements do not contain focusable descendents
●Elements use only permitted ARIA attributes
●Document has a `<title>` element
●`<html>` element has a `[lang]` attribute
●`<html>` element has a valid value for its `[lang]` attribute
●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
●Heading elements appear in a sequentially-descending order
●Skip links are focusable.
●Document has a main landmark.
●Deprecated ARIA roles were not used
●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 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
○`<frame>` or `<iframe>` elements have a title
○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
○`<input type="image">` elements have `[alt]` text
○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.
○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.
○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.
○`<td>` elements in a large `<table>` have one or more table headers.
96

Best Practices

General

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Description
TypeError: $ is not a function at <anonymous>:1:199 at <anonymous>:1:365 at https://www.googletagmanager.com/gtm.js?id=GTM-MNK3D2L:763:429 at vR (https://www.googletagmanager.com/gtm.js?id=GTM-MNK3D2L:765:31) at Nd.uR (https://www.googletagmanager.com/gtm.js?id=GTM-MNK3D2L:762:92) at Nd.<anonymous> (https://www.googletagmanager.com/gtm.js?id=GTM-MNK3D2L:306:187) at k.apply (https://www.googletagmanager.com/gtm.js?id=GTM-MNK3D2L:235:466) at gb (https://www.googletagmanager.com/gtm.js?id=GTM-MNK3D2L:198:719) at fb (https://www.googletagmanager.com/gtm.js?id=GTM-MNK3D2L:198:470) at Nd.<anonymous> (https://www.googletagmanager.com/gtm.js?id=GTM-MNK3D2L:259:473)
●Uses HTTPS
●Avoids deprecated APIs
●Avoids third-party cookies
●Allows users to paste into input fields
●Avoids requesting the geolocation permission on page load
●Avoids requesting the notification permission on page load
●Displays images with correct aspect ratio
●Serves images with appropriate resolution
●Page has the HTML doctype
●Properly defines charset
●No issues in the `Issues` panel in Chrome Devtools
●Ensure CSP is effective against XSS attacks
●Ensure proper origin isolation with COOP
●Mitigate DOM-based XSS with Trusted Types
●Detected JavaScript libraries
●Page has valid source maps
○Redirects HTTP traffic to HTTPS
○Use a strong HSTS policy
○Mitigate clickjacking with XFO or CSP
92

SEO

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

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
div.l-section__content > div.buttons > div.next-fact > a.arrows-cw

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`

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