Lighthouse Mobile

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

SCORE

GRADE

FIX

REVIEW

PASS

INFO

Detailed Report

Audit breakdown by category with detailed findings.

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.

Request	Cache TTL	Transfer Size
experiments.parsely.com/vip-experiments.js?apiKey=brookings.edu	30.0 s	8.9 KiB
cdn.jsdelivr.net/npm/swiper@8/swiper-bundle.min.css?ver=1.0.0	604800.0 s	5.2 KiB
www.gstatic.com/recaptcha/api2/logo_48.png	604800.0 s	2.3 KiB

Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]

items: [map[reflowTime:32.987 source:map[type:text value:[unattributed]]]]

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.

	URL	Resource Size	Est Savings
A pink and yellow abstract image of an office with people working, chatting and… `article.article > div.img-wrapper > figure > img`	/wp-content/uploads/2026/04/JamillahKnowles-DigitPinkOffi...	810.1 KiB	805.9 KiB
A woman displays an AI-generated image of Iran's new Supreme Leader, Ayatollah … `article.article > div.img-wrapper > figure > img`	/wp-content/uploads/2026/04/2026-04-06T000000Z_995221545_...	472.7 KiB	469.3 KiB
Iran's ambassador to the International Atomic Energy Agency (IAEA) Reza Najafi … `article.article > div.img-wrapper > figure > img`	www.brookings.edu/wp-content/uploads/2026/04/GettyImages-2263819725.jpg	305.5 KiB	290.5 KiB
Damaged roof of house `article.article > div.img-wrapper > figure > img`	/wp-content/uploads/2026/03/20260318_THP_ClimateInsurance...	215.9 KiB	212.6 KiB
Brookings expert Landry Signe' at the World Bank/IMF Spring meetings in April 2… `div.xl:col-span-9 > div.grid > div.flex > img.rounded-full`	www.brookings.edu/wp-content/uploads/2024/05/1.-IMG_9544.jpg?quality=50&w=1330	187.7 KiB	178.3 KiB
STONE RIDGE, VIRGINIA - JULY 17: In an aerial view, an Amazon Web Services data… `article.article > div.img-wrapper > figure > img`	/wp-content/uploads/2026/03/aws-data-center-stone-ridge-v...	163.8 KiB	160.3 KiB
This pool photo shows military police looking at computers, smartphones, and ot… `article.article > div.img-wrapper > figure > img`	/wp-content/uploads/2026/04/GettyImages-2224918114.jpg?re...	114.7 KiB	111.1 KiB
Cars move along a highway past a war memorial statue and a billboard depicting … `article.article > div.img-wrapper > figure > img`	/wp-content/uploads/2026/03/iran-war-GettyImages-22648692...	91.2 KiB	87.7 KiB
Large oil tankers berthed at the Port of Mutrah in Muscat, as regional tensions… `article.article > div.img-wrapper > figure > img`	/wp-content/uploads/2026/04/GettyImages-2264040491.jpg?re...	86.8 KiB	83.8 KiB
Graduation cap on top of a calculator next to stacks of money, a pen, and noteb… `article.article > div.img-wrapper > figure > img`	/wp-content/uploads/2026/04/Graduation-cap_calculator_mon...	73.3 KiB	69.6 KiB
picture of humanoid robots in display in China `article.article > div.img-wrapper > figure > img`	/wp-content/uploads/2026/04/China-robots-GettyImages-2268...	73.0 KiB	69.5 KiB
A person points at a page on the Marinetraffic website that shows commercial bo… `article.article > div.img-wrapper > figure > img`	/wp-content/uploads/2026/03/GettyImages-2264175746.jpg?re...	68.3 KiB	64.6 KiB
MIAMI, FLORIDA - MARCH 11: A customer shops in a grocery store on March 11, 202… `article.article > div.img-wrapper > figure > img`	/wp-content/uploads/2026/03/GettyImages-2266004331-1.jpg?...	56.3 KiB	53.6 KiB
Teacher with student in a classroom `article.article > div.img-wrapper > figure > img`	/wp-content/uploads/2026/04/student-teacher-GettyImages-1...	51.8 KiB	49.2 KiB
An aerial view shows cooling vent fans on the roof next to generators on the lo… `article.article > div.img-wrapper > figure > img`	/wp-content/uploads/2026/03/GettyImages-2250204930-1.jpg?...	51.1 KiB	49.0 KiB
A team of solar panel installers work to install a new solar panel array before… `article.article > div.img-wrapper > figure > img`	/wp-content/uploads/2026/03/GettyImages-2259620324.jpg?re...	48.2 KiB	45.8 KiB
JUPITER, FLORIDA - MARCH 25: Emily Gregory is seen at home the day after she be… `article.article > div.img-wrapper > figure > img`	/wp-content/uploads/2026/04/GettyImages-2268348754-1.jpg?...	34.4 KiB	32.7 KiB
A group of cover illustrations for various podcasts. `div.right-col > div.grid > div.xl:col-span-2 > img`	www.brookings.edu/wp-content/uploads/2025/07/Frame-3715.png?quality=50	52.5 KiB	30.9 KiB
HAVERSTRAW, NEW YORK - MAY 05: Lidia Vilorio, a home health aide, gives her pat… `article.article > div.img-wrapper > figure > img`	/wp-content/uploads/2026/03/GettyImages-1316467074-1.jpg?...	30.8 KiB	29.3 KiB
article.article > div.img-wrapper > figure > img `article.article > div.img-wrapper > figure > img`	/wp-content/uploads/2026/04/shutterstock_2587735465.jpg?r...	29.1 KiB	27.7 KiB
An illustration of a cell phone with an issue of the Brookings Brief displayed. `form#home-newsletter-subscribe > div.grid > div.xl:col-span-2 > img`	www.brookings.edu/wp-content/uploads/2025/07/Frame-3730.png?quality=50	44.2 KiB	22.6 KiB
A printed document with charts on top of an open laptop. `div.xl:col-span-9 > div.grid > div.flex > img.rounded-full`	/wp-content/uploads/2025/07/edcf49af2f8f844923670e77c6ed7...	27.1 KiB	16.0 KiB
A side view of the capitol building. `div.xl:col-span-9 > div.grid > div.flex > img.rounded-full`	/wp-content/uploads/2025/07/9d2eba72f558a4a9b0323a456b504...	22.8 KiB	5.0 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-2-IMG

nodeLabel: Iran's ambassador to the International Atomic Energy Agency (IAEA) Reza Najafi …

path: 1,HTML,1,BODY,8,DIV,0,MAIN,1,SECTION,1,DIV,0,DIV,0,DIV,1,DIV,0,DIV,0,DIV,0,DIV,0,ARTICLE,1,DIV,0,FIGURE,0,IMG

selector: article.article > div.img-wrapper > figure > img

snippet: <img class="" src="https://www.brookings.edu/wp-content/uploads/2026/04/GettyImages-226381972…" srcset="https://www.brookings.edu/wp-content/uploads/2026/04/GettyImages-226381972…" sizes="1500px" alt="Iran's ambassador to the International Atomic Energy Agency (IAEA) Reza Na…">

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.

URL	Transfer Size	Duration
cmp.osano.com/16CY1DUX9sNbY3wXk/aff9cc08-c2dc-4e4d-862b-bfc6fb4f9403/osano.js	100.7 KiB	4.0 s
/wp-content/themes/brookings/assets/styles/public.css?ver...	151.2 KiB	4.4 s
/_static/??-eJyVzMENgzAMRuGFGiwk1MABsQMbAP1pHYgT2UFInZ52B...	53.8 KiB	606 ms
/recaptcha/api.js?render=6LeD2NEmAAAAACNmfMOrpMwIrt4cV7pz...	1.0 KiB	184 ms
cdn.jsdelivr.net/npm/uikit@3.15.1/dist/js/uikit.min.js?ver=3.15.19	46.8 KiB	1.8 s
/_static/??-eJzTLy/QzcxLzilNSS3WzwKiwtLUokoopZebmaeXVayjj...	34.6 KiB	454 ms
/_static/??-eJydzDsOgCAMANALCQ2JER2MZ/HTSFUosTV4fB2dnd72o...	18.2 KiB	303 ms
/css2?family=Inter:wght@400;600;700&family=Newsreader:ita...	1.3 KiB	781 ms
cdn.jsdelivr.net/npm/uikit@3.15.1/dist/js/uikit-icons.min.js?ver=3.15.19	17.7 KiB	607 ms
experiments.parsely.com/vip-experiments.js?apiKey=brookings.edu	8.9 KiB	1.2 s
cdn.jsdelivr.net/npm/swiper@8/swiper-bundle.min.css?ver=1.0.0	5.2 KiB	762 ms
/wp-content/themes/brookings/assets/styles/app.css?ver=17...	5.0 KiB
/wp-content/plugins/wp-search-with-algolia/css/algolia-au...	948 B
/wp-content/themes/brookings/assets/styles/photoswipe.css...	2.3 KiB
/wp-content/plugins/wp-smartcrop/css/image-renderer.css?m...	431 B

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.

URL	Est Savings
fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2	5.0 ms

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: 1.6 s

URL	Time Spent
brookings.edu/	779 ms
www.brookings.edu/	785 ms
www.brookings.edu/	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

Minifying JavaScript files can reduce payload sizes and script parse time. Learn how to minify JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 7.6 KiB

URL	Transfer Size	Est Savings
/_static/??-eJyVzMENgzAMRuGFGiwk1MABsQMbAP1pHYgT2UFInZ52B...	53.7 KiB	5.4 KiB
/_static/??-eJyVjEEKwzAMBD9UWwRKnR5K3+IYkdiNZVVSEvr7+phrT...	8.9 KiB	2.2 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: 1.1 s 150.7 KiB

URL	Transfer Size	Est Savings
/wp-content/themes/brookings/assets/styles/public.css?ver...	151.1 KiB	150.7 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: 4.1 s 592.1 KiB

URL	Transfer Size	Est Savings
www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js	361.8 KiB	177.0 KiB
www.googletagmanager.com/gtag/destination?id=AW-993291021&cx=c&gtm=4e64h1	144.4 KiB	66.0 KiB
www.googletagmanager.com/gtag/js?id=G-PQL1XY12X1&cx=c&gtm=4e64h1	157.6 KiB	65.9 KiB
www.googletagmanager.com/gtag/js?id=G-SHM2JLLVDB&cx=c&gtm=4e64h1	157.2 KiB	65.0 KiB
www.googletagmanager.com/gtm.js?id=GTM-WHWFZ5	173.5 KiB	61.4 KiB
/_static/??-eJyVzMENgzAMRuGFGiwk1MABsQMbAP1pHYgT2UFInZ52B...	53.7 KiB	50.8 KiB
/wp-content/themes/brookings/assets/scripts/public.js?ver...	59.5 KiB	49.1 KiB
cdn.jsdelivr.net/npm/uikit@3.15.1/dist/js/uikit.min.js?ver=3.15.19	46.4 KiB	31.0 KiB
cmp.osano.com/16CY1DUX9sNbY3wXk/aff9cc08-c2dc-4e4d-862b-bfc6fb4f9403/osano.js	100.2 KiB	26.0 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.

URL	Total CPU Time	Script Evaluation	Script Parse
/wp-content/themes/brookings/assets/styles/public.css?ver...	2.2 s	0.0 ms	0.0 ms
Unattributable	1.2 s	11 ms	0.0 ms
www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js	974 ms	828 ms	112 ms
www.brookings.edu/	909 ms	60 ms	7.7 ms
www.googletagmanager.com/gtm.js?id=GTM-WHWFZ5	602 ms	492 ms	73 ms
cmp.osano.com/16CY1DUX9sNbY3wXk/aff9cc08-c2dc-4e4d-862b-bfc6fb4f9403/osano.js	597 ms	484 ms	43 ms
www.googletagmanager.com/gtag/destination?id=AW-993291021&cx=c&gtm=4e64h1	445 ms	381 ms	59 ms
cdn.jsdelivr.net/npm/uikit@3.15.1/dist/js/uikit.min.js?ver=3.15.19	282 ms	103 ms	17 ms
www.googletagmanager.com/gtag/js?id=G-SHM2JLLVDB&cx=c&gtm=4e64h1	279 ms	217 ms	58 ms
www.googletagmanager.com/gtag/js?id=G-PQL1XY12X1&cx=c&gtm=4e64h1	276 ms	218 ms	54 ms
/wp-content/themes/brookings/assets/scripts/public.js?ver...	155 ms	60 ms	28 ms
/_static/??-eJzTLy/QzcxLzilNSS3WzwKiwtLUokoopZebmaeXVayjj...	95 ms	70 ms	13 ms
/_static/??-eJyVjEEKwzAMBD9UWwRKnR5K3+IYkdiNZVVSEvr7+phrT...	72 ms	65 ms	5.0 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.

Category	Time Spent
Script Evaluation	3.1 s
Parse HTML & CSS	2.1 s
Other	1.7 s
Style & Layout	680 ms
Script Parsing & Compilation	523 ms
Garbage Collection	120 ms
Rendering	53 ms

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.

URL	Transfer Size
/wp-content/uploads/2026/04/JamillahKnowles-DigitPinkOffi...	811.1 KiB
/wp-content/uploads/2026/04/2026-04-06T000000Z_995221545_...	473.3 KiB
www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js	362.3 KiB
www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js	361.9 KiB
www.brookings.edu/wp-content/uploads/2026/04/GettyImages-2263819725.jpg	306.0 KiB
www.brookings.edu/wp-content/uploads/2023/06/RalphAlswang_0026.jpg	254.5 KiB
/wp-content/uploads/2026/03/20260318_THP_ClimateInsurance...	216.3 KiB
www.brookings.edu/wp-content/uploads/2024/05/1.-IMG_9544.jpg?quality=50&w=1330	188.0 KiB
www.googletagmanager.com/gtm.js?id=GTM-WHWFZ5	173.9 KiB
/wp-content/uploads/2026/03/aws-data-center-stone-ridge-v...	164.1 KiB

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

●User Timing marks and measures 15 user timings

●Avoid long main-thread tasks 20 long tasks found

●Avoid non-composited animations 3 animated elements found

●Image elements have explicit `width` and `height`

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 60 ms

●Server Backend Latencies 30 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Initial server response time was short Root document took 20 ms

○INP breakdown

○Avoid large layout shifts

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.

Names and labels

Labels ensure that form controls are announced properly by assistive technologies, like screen readers. Learn more about form element labels.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.footer-main-cta > div.footer-main-cta-form > form#footerSubscribe > input.screen-reader-text `div.footer-main-cta > div.footer-main-cta-form > form#footerSubscribe > input.screen-reader-text`

Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
header.header > div.primary-nav > div.flex > a.uk-navbar-toggle `header.header > div.primary-nav > div.flex > a.uk-navbar-toggle`
div.footer-main > div.footer-main-cta > div.brookings-b > a `div.footer-main > div.footer-main-cta > div.brookings-b > a`

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

○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

●`[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

●`<html>` element has a `[lang]` attribute

●`<html>` element has a valid value for its `[lang]` attribute

●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).

●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements

●No element has a `[tabindex]` value greater than 0

●Touch targets have sufficient size and spacing.

●Heading elements appear in a sequentially-descending order

●Document has a main landmark.

●Deprecated ARIA roles were not used

○`[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

○`<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

○Links are distinguishable without relying on color.

○The document does not use `<meta http-equiv="refresh">`

○`<object>` elements have alternate text

○Select elements have associated label elements.

○Skip links are focusable.

○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.

○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.

○`[lang]` attributes have a valid value

○`<video>` elements contain a `<track>` element with `[kind="captions"]`

○Tables have different content in the summary attribute and `<caption>`.

○All heading elements contain content.

○Uses ARIA roles only on compatible elements

○Image elements do not have `[alt]` attributes that are redundant text.

○Identical links have the same purpose.

○Elements with visible text labels have matching accessible names.

○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.

○`<td>` elements in a large `<table>` have one or more table headers.

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 URL	Request Resolution
www.brookings.edu/	Allowed

●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 browser errors logged to the console

●No issues in the `Issues` panel in Chrome Devtools

●Ensure CSP is effective against XSS attacks

●Use a strong HSTS policy

●Ensure proper origin isolation with COOP

●Mitigate clickjacking with XFO or CSP

●Mitigate DOM-based XSS with Trusted Types

●Detected JavaScript libraries

●Page has valid source maps

○Redirects HTTP traffic to HTTPS

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#mobileNav > div.uk-offcanvas-bar > div.mobile-navigation-header > a.uk-offcanvas-close`
body.home > div#overlay-search > div.uk-offcanvas-bar > a.uk-offcanvas-close `body.home > div#overlay-search > div.uk-offcanvas-bar > a.uk-offcanvas-close`
Cookie Preferences `nav.footer-main-content-links > ul#menu-footer-2 > li#osano-preferences > a.text-medium`

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`