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Lighthouse Mobile

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

Audit breakdown by category with detailed findings.

36

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
d1aqhv4sn5kxtx.cloudfront.net/actiontag/at.js900.0 s269.5 KiB
/sites/default/files/styles/large/public/2026-01/1500-900...14400.0 s190.4 KiB
cdn.optimizely.com/js/3747760300.js120.0 s92.1 KiB
connect.facebook.net/en_US/fbevents.js1200.0 s99.4 KiB
www.ucs.org/sites/default/files/2022-05/strike-crowd.jpg14400.0 s113.1 KiB
js.verygoodvault.com/vgs-collect/2.18.4/vgs-collect.js60.0 s43.8 KiB
/signals/config/625465517575530?v=2.9.303&r=stable&domain...1200.0 s45.9 KiB
/sites/default/files/styles/medium/public/2019-10/ucsusa_...14400.0 s53.5 KiB
/themes/custom/ucstheme/assets/mercury/woff2/MercurySSm-B...14400.0 s51.4 KiB
/themes/custom/ucstheme/assets/mercury/woff2/MercurySSm-B...14400.0 s50.7 KiB
/themes/custom/ucstheme/assets/mercury/woff2/MercurySSm-B...14400.0 s42.9 KiB
www.ucs.org/themes/custom/ucstheme/assets/gotham/woff2/GothamSSm-Book_Web.woff214400.0 s40.3 KiB
www.ucs.org/themes/custom/ucstheme/assets/gotham/woff2/GothamSSm-Bold_Web.woff214400.0 s39.0 KiB
/sites/default/files/styles/thumbnail/public/2026-04/1500...14400.0 s36.5 KiB
/sites/default/files/styles/thumbnail/public/2026-03/ma-p...14400.0 s30.7 KiB
www.google-analytics.com/analytics.js7200.0 s20.9 KiB
d1aqhv4sn5kxtx.cloudfront.net/actiontag/extra.min.css900.0 s14.5 KiB
www.ucs.org/sites/default/files/2019-10/store-promo-small.png14400.0 s16.4 KiB
d1aqhv4sn5kxtx.cloudfront.net/actiontag/at.min.css900.0 s12.4 KiB
/sites/default/files/styles/thumbnail/public/2025-10/scie...14400.0 s13.6 KiB
s.yimg.com/wi/ytc.js0.0 ms7.1 KiB
/sites/default/files/styles/thumbnail/public/2026-03/gave...14400.0 s10.1 KiB
js.ipredictive.com/adelphic_universal_pixel.js0.0 ms3.5 KiB
www.ucs.org/themes/custom/ucstheme/js/theme.js?v=1.x14400.0 s5.2 KiB
/sites/default/files/js/js_A6H7Rex29pkhY37hi0OxjsdegfKQ8_...1209600.0 s30.1 KiB
/sites/default/files/css/css_CK-LRT_1yKGV3VPtS-Xlppzsd2JE...1209600.0 s20.4 KiB
rules.quantcount.com/rules-p-8w7tSVuzV_3NU.js3600.0 s2.0 KiB
www.ucs.org/themes/custom/ucstheme/assets/donut-chart.svg14400.0 s931 B
/sites/default/files/css/css_OtJcwHerXdLJUIRGUEgICpAWNakm...1209600.0 s1.6 KiB
/tr/?id=625465517575530&ev=PageView&dl=https%3A%2F%2Fwww....0.0 ms19 B
www.ucs.org/themes/custom/ucstheme/assets/gotham/woff2/GothamSSm-Book_Web.woff214400.0 s0 B
www.ucs.org/themes/custom/ucstheme/assets/gotham/woff2/GothamSSm-Bold_Web.woff214400.0 s0 B

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:node label:Element subItemsHeading:map[key:extra] valueType:node] map[granularity:0.001 key:score label:Layout shift score subItemsHeading:map[key:cause valueType:text] valueType:numeric]]
items: [map[node:map[type:text value:Total] score:0.033965] map[node:map[boundingRect:map[bottom:675 height:312 left:20 right:412 top:363 width:392] lhId:page-7-DIV nodeLabel:We use science to make change happen. The Union of Concerned Scientists is a m… path:1,HTML,1,BODY,7,DIV,2,MAIN,1,DIV,0,DIV,0,ARTICLE,0,DIV,0,DIV,0,DIV,1,DIV,0,DIV selector:div.column-section > div.main-region > div.block > div.clearfix snippet:<div class="clearfix text-formatted field field--name-field-intro-paragraph field--typ…"> type:node] score:0.018466 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:6129 height:279 left:20 right:392 top:5850 width:372] lhId:page-11-IMG nodeLabel:Say it with science. path:1,HTML,1,BODY,7,DIV,3,FOOTER,1,DIV,0,DIV,0,DIV,0,DIV,0,IMG selector:div.wrapper-lg > div#block-footerstorepromo > div.clearfix > img snippet:<img src="/sites/default/files/2019-10/store-promo-small.png" alt="Say it with science."> type:node]] map[cause:Web font extra:map[type:url value:https://www.ucs.org/themes/custom/ucstheme/assets/mercury/woff2/MercurySSm-Bold-Pro_Web.woff2]]] type:subitems]] map[node:map[boundingRect:map[bottom:675 height:312 left:20 right:412 top:363 width:392] lhId:page-7-DIV nodeLabel:We use science to make change happen. The Union of Concerned Scientists is a m… path:1,HTML,1,BODY,7,DIV,2,MAIN,1,DIV,0,DIV,0,ARTICLE,0,DIV,0,DIV,0,DIV,1,DIV,0,DIV selector:div.column-section > div.main-region > div.block > div.clearfix snippet:<div class="clearfix text-formatted field field--name-field-intro-paragraph field--typ…"> type:node] score:0.01494 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:715 height:658 left:0 right:412 top:56 width:412] lhId:page-1-IMG nodeLabel:A person stands in front of a solar panel with their arms crossed path:1,HTML,1,BODY,7,DIV,2,MAIN,1,DIV,0,DIV,0,ARTICLE,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,FIGURE,0,IMG selector:div.block > div.field > figure.media > img.image-style-original snippet:<img src="https://www.ucs.org/sites/default/files/styles/medium/public/2019-10/ucsus…" width="500" height="300" alt="A person stands in front of a solar panel with their arms crossed" srcset="https://www.ucs.org/sites/default/files/styles/large/public/2019-10/ucsusa…" class="image-style-original"> type:node]] map[cause:Web font extra:map[type:url value:https://www.ucs.org/themes/custom/ucstheme/assets/mercury/woff2/MercurySSm-Book-Pro_Web.woff2]] map[cause:Web font extra:map[type:url value:https://www.ucs.org/themes/custom/ucstheme/assets/mercury/woff2/MercurySSm-BookItalic-Pro_Web.woff2]]] type:subitems]] map[node:map[boundingRect:map[bottom:43 height:38 left:196 right:392 top:5 width:196] lhId:page-5-DIV nodeLabel:DONATE + MENU path:1,HTML,1,BODY,7,DIV,0,HEADER,2,DIV,0,DIV,2,DIV selector:header#site-header > div.region > div.wrapper-lg > div.mobile-menu-items snippet:<div class="mobile-menu-items"> type:node] score:0.000368 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:715 height:658 left:0 right:412 top:56 width:412] lhId:page-1-IMG nodeLabel:A person stands in front of a solar panel with their arms crossed path:1,HTML,1,BODY,7,DIV,2,MAIN,1,DIV,0,DIV,0,ARTICLE,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,FIGURE,0,IMG selector:div.block > div.field > figure.media > img.image-style-original snippet:<img src="https://www.ucs.org/sites/default/files/styles/medium/public/2019-10/ucsus…" width="500" height="300" alt="A person stands in front of a solar panel with their arms crossed" srcset="https://www.ucs.org/sites/default/files/styles/large/public/2019-10/ucsusa…" class="image-style-original"> type:node]] map[cause:Web font extra:map[type:url value:https://www.ucs.org/themes/custom/ucstheme/assets/gotham/woff2/GothamSSm-Bold_Web.woff2]] map[cause:Web font extra:map[type:url value:https://www.ucs.org/themes/custom/ucstheme/assets/gotham/woff2/GothamSSm-Bold_Web.woff2]]] type:subitems]] map[node:map[boundingRect:map[bottom:43 height:38 left:196 right:392 top:5 width:196] lhId:page-5-DIV nodeLabel:DONATE + MENU path:1,HTML,1,BODY,7,DIV,0,HEADER,2,DIV,0,DIV,2,DIV selector:header#site-header > div.region > div.wrapper-lg > div.mobile-menu-items snippet:<div class="mobile-menu-items"> type:node] score:0.000191 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:715 height:658 left:0 right:412 top:56 width:412] lhId:page-1-IMG nodeLabel:A person stands in front of a solar panel with their arms crossed path:1,HTML,1,BODY,7,DIV,2,MAIN,1,DIV,0,DIV,0,ARTICLE,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,FIGURE,0,IMG selector:div.block > div.field > figure.media > img.image-style-original snippet:<img src="https://www.ucs.org/sites/default/files/styles/medium/public/2019-10/ucsus…" width="500" height="300" alt="A person stands in front of a solar panel with their arms crossed" srcset="https://www.ucs.org/sites/default/files/styles/large/public/2019-10/ucsusa…" class="image-style-original"> type:node]] map[cause:Web font extra:map[type:url value:https://www.ucs.org/themes/custom/ucstheme/assets/gotham/woff2/GothamSSm-Book_Web.woff2]] map[cause:Web font extra:map[type:url value:https://www.ucs.org/themes/custom/ucstheme/assets/gotham/woff2/GothamSSm-Book_Web.woff2]]] type:subitems]]]
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:0.128047] map[node:map[boundingRect:map[bottom:823 height:203 left:0 right:412 top:620 width:412] lhId:page-9-DIV nodeLabel:× MAKE YOUR STATE A CLEAN ENERGY LEADER Write today and tell your state leader… path:1,HTML,1,BODY,7,DIV,4,DIV selector:body.node-id-1 > div.dialog-off-canvas-main-canvas > div#block-actioninterrupter snippet:<div id="block-actioninterrupter" class="block block-block-content block-block-content75266ea7-83f6-441a-b891-3158a…"> type:node] score:0.128047]]

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
/themes/custom/ucstheme/assets/mercury/woff2/MercurySSm-B...445 ms
/themes/custom/ucstheme/assets/mercury/woff2/MercurySSm-B...425 ms
/themes/custom/ucstheme/assets/mercury/woff2/MercurySSm-B...415 ms
www.ucs.org/themes/custom/ucstheme/assets/gotham/woff2/GothamSSm-Bold_Web.woff290 ms
www.ucs.org/themes/custom/ucstheme/assets/gotham/woff2/GothamSSm-Book_Web.woff230 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLResource SizeEst Savings
A group of people smiling at the Clean and Reliable Grid Affordability Act sign… div.field > figure.media > div.field > img.image-style-large
/sites/default/files/styles/large/public/2026-01/1500-900...189.7 KiB145.8 KiB
A person stands in front of a solar panel with their arms crossed div.block > div.field > figure.media > img.image-style-original
/sites/default/files/styles/medium/public/2019-10/ucsusa_...53.0 KiB16.3 KiB
A aerial view of New Orleans, Louisiana. div.field > figure.media > div.field > img.image-style-thumbnail
/sites/default/files/styles/thumbnail/public/2026-04/1500...35.7 KiB11.3 KiB
a thumbnail of a poster on corporate accountability div.field > figure.media > div.field > img.image-style-thumbnail
/sites/default/files/styles/thumbnail/public/2026-03/ma-p...30.2 KiB5.8 KiB
Can California’s Interconnection Reforms Deliver a Cleaner Grid? div.posts > div#post-97173 > a.img-wrapper > img
/wp-content/uploads/2026/04/Copy-of-Blog-Lead-Image-Templ...29.8 KiB5.4 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-1-IMG
nodeLabel: A person stands in front of a solar panel with their arms crossed
path: 1,HTML,1,BODY,7,DIV,2,MAIN,1,DIV,0,DIV,0,ARTICLE,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,FIGURE,0,IMG
selector: div.block > div.field > figure.media > img.image-style-original
snippet: <img src="https://www.ucs.org/sites/default/files/styles/medium/public/2019-10/ucsus…" width="500" height="300" alt="A person stands in front of a solar panel with their arms crossed" srcset="https://www.ucs.org/sites/default/files/styles/large/public/2019-10/ucsusa…" class="image-style-original">

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
cdn.optimizely.com/js/3747760300.js92.1 KiB1.4 s
/sites/default/files/css/css_CK-LRT_1yKGV3VPtS-Xlppzsd2JE...20.4 KiB300 ms
/sites/default/files/css/css_OtJcwHerXdLJUIRGUEgICpAWNakm...1.6 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: 1.2 s
URLTime Spent
ucs.org/1.2 s
www.ucs.org/0.0 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

ElementLayout shift score
× MAKE YOUR STATE A CLEAN ENERGY LEADER Write today and tell your state leader… body.node-id-1 > div.dialog-off-canvas-main-canvas > div#block-actioninterrupter
0.128
We use science to make change happen. The Union of Concerned Scientists is a m… div.column-section > div.main-region > div.block > div.clearfix
0.018
We use science to make change happen. The Union of Concerned Scientists is a m… div.column-section > div.main-region > div.block > div.clearfix
0.015
DONATE + MENU header#site-header > div.region > div.wrapper-lg > div.mobile-menu-items
0.000
DONATE + MENU header#site-header > div.region > div.wrapper-lg > div.mobile-menu-items
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

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: 150 ms 41.0 KiB
URLTransfer SizeEst Savings
/sites/default/files/css/css_CK-LRT_1yKGV3VPtS-Xlppzsd2JE...19.8 KiB15.5 KiB
d1aqhv4sn5kxtx.cloudfront.net/actiontag/extra.min.css13.9 KiB13.8 KiB
d1aqhv4sn5kxtx.cloudfront.net/actiontag/at.min.css11.8 KiB11.7 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: 1.8 s 692.3 KiB
URLTransfer SizeEst Savings
d1aqhv4sn5kxtx.cloudfront.net/actiontag/at.js268.8 KiB194.2 KiB
www.googletagmanager.com/gtm.js?id=GTM-NB5C4Q177.3 KiB114.1 KiB
www.ucs.org/tm/gtd?id=AW-1071979118&cx=c&gtm=4e64k0149.6 KiB74.3 KiB
www.ucs.org/tm/185.4 KiB69.9 KiB
www.ucs.org/tm/?id=G-VB9DKE4V36&cx=c&gtm=4e64k0181.0 KiB69.6 KiB
www.ucs.org/tm/gtd?id=DC-8188095&cx=c&gtm=4e64k0135.0 KiB67.4 KiB
cdn.optimizely.com/js/3747760300.js91.5 KiB42.8 KiB
connect.facebook.net/en_US/fbevents.js96.5 KiB34.1 KiB
js.verygoodvault.com/vgs-collect/2.18.4/vgs-collect.js43.1 KiB26.1 KiB

Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to reduce Javascript execution time.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTotal CPU TimeScript EvaluationScript Parse
www.ucs.org/642 ms13 ms3.6 ms
d1aqhv4sn5kxtx.cloudfront.net/actiontag/at.js534 ms408 ms90 ms
Unattributable471 ms25 ms0.0 ms
www.ucs.org/tm/405 ms343 ms45 ms
www.ucs.org/tm/?id=G-VB9DKE4V36&cx=c&gtm=4e64k0310 ms263 ms46 ms
cdn.optimizely.com/js/3747760300.js307 ms268 ms22 ms
www.ucs.org/tm/gtd?id=DC-8188095&cx=c&gtm=4e64k0210 ms176 ms31 ms
www.ucs.org/tm/gtd?id=AW-1071979118&cx=c&gtm=4e64k0177 ms142 ms34 ms
/signals/config/625465517575530?v=2.9.303&r=stable&domain...111 ms91 ms19 ms
connect.facebook.net/en_US/fbevents.js108 ms83 ms25 ms
www.googletagmanager.com/gtm.js?id=GTM-NB5C4Q76 ms24 ms52 ms
js.verygoodvault.com/vgs-collect/2.18.4/vgs-collect.js57 ms43 ms13 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 Evaluation2.1 s
Other627 ms
Script Parsing & Compilation406 ms
Style & Layout369 ms
Rendering94 ms
Garbage Collection64 ms
Parse HTML & CSS54 ms

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
Investors Move Fight Over Fossil Fuel Dangers From the Boardroom to the Courtro… div.posts > div#post-97220 > a.img-wrapper > img
/wp-content/uploads/2026/04/Blog-Thumbnail-BP-logo-greenp...
Terrible Team: Super El Niño and Climate Change Could Lead to Record-Breaking G… div.posts > div#post-97193 > a.img-wrapper > img
/wp-content/uploads/2021/09/worker-silhouette-drinking-wa...
Can California’s Interconnection Reforms Deliver a Cleaner Grid? div.posts > div#post-97173 > a.img-wrapper > img
/wp-content/uploads/2026/04/Copy-of-Blog-Lead-Image-Templ...
Say it with science. div.wrapper-lg > div#block-footerstorepromo > div.clearfix > img
www.ucs.org/sites/default/files/2019-10/store-promo-small.png

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

●Optimize DOM size
●Forced reflow
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●Minify JavaScript
●Avoids enormous network payloads Total size was 2,349 KiB
●User Timing marks and measures 6 user timings
●Avoid long main-thread tasks 12 long tasks found
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 100 ms
●Server Backend Latencies 420 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 250 ms
○INP breakdown
○Avoid non-composited animations
95

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
DONATE div.wrapper-lg > div.mobile-menu-items > div.donate-alt > a.btn-donate-sm
DONATE div.block > div.clearfix > p > a.btn

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
Tell Congress: Protect Climate Research div.field > div.node > div.node__content > h3

These are opportunities to improve keyboard navigation in your application.

○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
●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 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 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
●Touch targets have sufficient size and spacing.
●Document has a main landmark.
●Deprecated ARIA roles were not used
●Identical links have the same purpose.
○`[accesskey]` values are unique
○`button`, `link`, and `menuitem` elements have accessible names
○Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
○`[aria-hidden="true"]` elements do not contain focusable descendents
○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 buttons have discernible text.
○`<input type="image">` elements have `[alt]` text
○The document does not use `<meta http-equiv="refresh">`
○`<object>` elements have alternate text
○Select elements have associated label elements.
○Skip links are focusable.
○No element has a `[tabindex]` value greater than 0
○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.
○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.
73

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
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
www.ucs.org/
Access to XMLHttpRequest at 'https://actions.everyaction.com/v1/Forms/riz_81HSRkGMC2loQcyxiQ2' from origin 'https://www.ucs.org' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
www.ucs.org/
Access to XMLHttpRequest at 'https://actions.everyaction.com/v1/Forms/riz_81HSRkGMC2loQcyxiQ2' from origin 'https://www.ucs.org' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
www.ucs.org/
Access to XMLHttpRequest at 'https://actions.everyaction.com/v1/Forms/riz_81HSRkGMC2loQcyxiQ2' from origin 'https://www.ucs.org' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
www.ucs.org/
Access to XMLHttpRequest at 'https://actions.everyaction.com/v1/Forms/riz_81HSRkGMC2loQcyxiQ2' from origin 'https://www.ucs.org' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
www.ucs.org/
Access to XMLHttpRequest at 'https://advocator.ngpvan.com/https%3a%2f%2fsecure.everyaction.com%2fv1%2fForms%2fGQrln-2QfU-0teQoe1VjgQ2/ngpForm' from origin 'https://www.ucs.org' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
www.ucs.org/
Access to XMLHttpRequest at 'https://advocator.ngpvan.com/https%3a%2f%2fsecure.everyaction.com%2fv1%2fForms%2fGQrln-2QfU-0teQoe1VjgQ2/ngpForm' from origin 'https://www.ucs.org' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
actions.everyaction.com/v1/Forms/riz_81HSRkGMC2loQcyxiQ2
Failed to load resource: net::ERR_FAILED
actions.everyaction.com/v1/Forms/riz_81HSRkGMC2loQcyxiQ2
Failed to load resource: net::ERR_FAILED
actions.everyaction.com/v1/Forms/riz_81HSRkGMC2loQcyxiQ2
Failed to load resource: net::ERR_FAILED
actions.everyaction.com/v1/Forms/riz_81HSRkGMC2loQcyxiQ2
Failed to load resource: net::ERR_FAILED
/https://secure.everyaction.com/v1/Forms/GQrln-2QfU-0teQo...
Failed to load resource: net::ERR_FAILED
/https://secure.everyaction.com/v1/Forms/GQrln-2QfU-0teQo...
Failed to load resource: net::ERR_FAILED
d1aqhv4sn5kxtx.cloudfront.net/actiontag/at.js line 669, col 16611
fetching error [object Object]
d1aqhv4sn5kxtx.cloudfront.net/actiontag/at.js line 669, col 16611
fetching error [object Object]
d1aqhv4sn5kxtx.cloudfront.net/actiontag/at.js line 669, col 16611
fetching error [object Object]

Issues logged to the `Issues` panel in Chrome Devtools indicate unresolved problems. They can come from network request failures, insufficient security controls, and other browser concerns. Open up the Issues panel in Chrome DevTools for more details on each issue.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Issue type
Content security policy

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLMap URL
www.ucs.org/tm/?id=G-VB9DKE4V36&cx=c&gtm=4e64k0
www.ucs.org/tm/
d1aqhv4sn5kxtx.cloudfront.net/actiontag/at.jsd1aqhv4sn5kxtx.cloudfront.net/actiontag/at.js.map
●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
●Ensure CSP is effective against XSS attacks
●Use a strong HSTS policy
●Ensure proper origin isolation with COOP
●Mitigate DOM-based XSS with Trusted Types
●Detected JavaScript libraries
○Redirects HTTP traffic to HTTPS
○Mitigate clickjacking with XFO or CSP
92

SEO

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

Content Best Practices

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Link destinationLink Text
www.ucs.org/aboutLEARN MORE
blog.ucs.org/READ MORE
www.ucs.org/aboutLEARN MORE
www.ucs.org/about/ucs-privacy-statement.htmlLearn more

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

○Structured data is valid
●Page isn’t blocked from indexing
●Document has a `<title>` element
●Document has a meta description
●Page has successful HTTP status code
●Links are crawlable
●robots.txt is valid
●Image elements have `[alt]` attributes
●Document has a valid `hreflang`
●Document has a valid `rel=canonical`

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