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Lighthouse Desktop

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

Audit breakdown by category with detailed findings.

54

Performance

Insights

Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile Baseline features, unless you know you must support older browsers. Learn why most sites can deploy ES6+ code without transpiling

Why this matters

Performance issues directly impact user engagement and conversion rates.

3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:source label:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:74.416 source:map[column:15818 line:1 type:source-location url:https://cdn.jsdelivr.net/npm/uikit@3.15.1/dist/js/uikit.min.js?ver=3.15.19 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:74.416 source:map[column:4247 line:0 type:source-location url:https://cdn.jsdelivr.net/npm/uikit@3.15.1/dist/js/uikit.min.js?ver=3.15.19 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: 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
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
/wp-content/themes/brookings/assets/styles/public.css?ver...151.2 KiB662 ms
cmp.osano.com/16CY1DUX9sNbY3wXk/aff9cc08-c2dc-4e4d-862b-bfc6fb4f9403/osano.js101.0 KiB631 ms
/_static/??-eJyVzMENgzAMRuGFGiwk1MABsQMbAP1pHYgT2UFInZ52B...53.8 KiB83 ms
cdn.jsdelivr.net/npm/uikit@3.15.1/dist/js/uikit.min.js?ver=3.15.1947.2 KiB249 ms
/_static/??-eJzTLy/QzcxLzilNSS3WzwKiwtLUokoopZebmaeXVayjj...34.6 KiB
/recaptcha/api.js?render=6LeD2NEmAAAAACNmfMOrpMwIrt4cV7pz...1.0 KiB258 ms
cdn.jsdelivr.net/npm/uikit@3.15.1/dist/js/uikit-icons.min.js?ver=3.15.1917.6 KiB83 ms
/_static/??-eJydzDsOgCAMANALCQ2JER2MZ/HTSFUosTV4fB2dnd72o...18.2 KiB
/css2?family=Inter:wght@400;600;700&family=Newsreader:ita...1.3 KiB227 ms
/wp-content/plugins/wp-search-with-algolia/css/algolia-au...948 B
/wp-content/themes/brookings/assets/styles/app.css?ver=17...5.0 KiB
cdn.jsdelivr.net/npm/swiper@8/swiper-bundle.min.css?ver=1.0.04.9 KiB214 ms
experiments.parsely.com/vip-experiments.js?apiKey=brookings.edu8.9 KiB243 ms
/wp-content/plugins/wp-smartcrop/css/image-renderer.css?m...431 B
/wp-content/themes/brookings/assets/styles/photoswipe.css...2.3 KiB

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
experiments.parsely.com/vip-experiments.js?apiKey=brookings.edu30.0 s8.9 KiB
cdn.jsdelivr.net/npm/swiper@8/swiper-bundle.min.css?ver=1.0.0604800.0 s4.9 KiB
www.gstatic.com/recaptcha/api2/logo_48.png604800.0 s2.3 KiB

Consider setting font-display to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with font metric overrides.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLEst Savings
fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.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
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...209.0 KiB203.3 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=1330187.7 KiB182.3 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_...125.2 KiB115.1 KiB
Damaged roof of house article.article > div.img-wrapper > figure > img
/wp-content/uploads/2026/03/20260318_THP_ClimateInsurance...130.2 KiB105.2 KiB
Iran's ambassador to the International Atomic Energy Agency (IAEA) Reza Najafi … article.article > div.img-wrapper > figure > img
/wp-content/uploads/2026/04/GettyImages-2263819725.jpg?re...127.3 KiB105.2 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...47.0 KiB37.8 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...38.8 KiB34.0 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=5052.5 KiB32.5 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=5044.2 KiB24.7 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...28.2 KiB23.4 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 KiB20.7 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...26.9 KiB17.5 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...25.9 KiB16.2 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...24.2 KiB13.2 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...21.2 KiB12.4 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?...21.2 KiB12.1 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 KiB11.8 KiB

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

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.

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: 462 ms
URLTime Spent
brookings.edu/224 ms
www.brookings.edu/238 ms
www.brookings.edu/0.0 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

Diagnostics

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 180 ms 150.7 KiB
URLTransfer SizeEst Savings
/wp-content/themes/brookings/assets/styles/public.css?ver...151.1 KiB150.7 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: 80 ms 591.8 KiB
URLTransfer SizeEst Savings
www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js361.8 KiB176.8 KiB
www.googletagmanager.com/gtag/destination?id=AW-993291021&cx=c&gtm=4e64h1h1144.4 KiB66.0 KiB
www.googletagmanager.com/gtag/js?id=G-PQL1XY12X1&cx=c&gtm=4e64h1h1157.6 KiB65.8 KiB
www.googletagmanager.com/gtag/js?id=G-SHM2JLLVDB&cx=c&gtm=4e64h1h1157.2 KiB65.0 KiB
www.googletagmanager.com/gtm.js?id=GTM-WHWFZ5173.5 KiB61.4 KiB
/_static/??-eJyVzMENgzAMRuGFGiwk1MABsQMbAP1pHYgT2UFInZ52B...53.7 KiB50.8 KiB
/wp-content/themes/brookings/assets/scripts/public.js?ver...59.5 KiB49.1 KiB
cdn.jsdelivr.net/npm/uikit@3.15.1/dist/js/uikit.min.js?ver=3.15.1946.4 KiB31.0 KiB
cmp.osano.com/16CY1DUX9sNbY3wXk/aff9cc08-c2dc-4e4d-862b-bfc6fb4f9403/osano.js100.4 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 minimize main-thread work

Why this matters

Performance issues directly impact user engagement and conversion rates.

CategoryTime Spent
Other1.6 s
Script Evaluation920 ms
Parse HTML & CSS498 ms
Style & Layout243 ms
Script Parsing & Compilation135 ms
Garbage Collection46 ms
Rendering46 ms

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
URLTransfer SizeEst Savings
/_static/??-eJyVzMENgzAMRuGFGiwk1MABsQMbAP1pHYgT2UFInZ52B...53.7 KiB5.4 KiB
/_static/??-eJyVjEEKwzAMBD9UWwRKnR5K3+IYkdiNZVVSEvr7+phrT...8.9 KiB2.2 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.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js362.4 KiB
www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js362.4 KiB
/wp-content/uploads/2026/04/JamillahKnowles-DigitPinkOffi...209.3 KiB
www.brookings.edu/wp-content/uploads/2024/05/1.-IMG_9544.jpg?quality=50&w=1330188.0 KiB
www.googletagmanager.com/gtm.js?id=GTM-WHWFZ5173.9 KiB
www.googletagmanager.com/gtag/js?id=G-PQL1XY12X1&cx=c&gtm=4e64h1h1157.6 KiB
www.googletagmanager.com/gtag/js?id=G-SHM2JLLVDB&cx=c&gtm=4e64h1h1157.3 KiB
/wp-content/themes/brookings/assets/styles/public.css?ver...151.2 KiB
www.googletagmanager.com/gtag/destination?id=AW-993291021&cx=c&gtm=4e64h1h1144.4 KiB
/wp-content/uploads/2026/03/20260318_THP_ClimateInsurance...130.5 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
●JavaScript execution time 0.9 s
●Avoid long main-thread tasks 10 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 10 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
●Avoid large layout shifts 2 layout shifts found
○INP breakdown
91

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
div.footer-main-content > div.footer-main-content-info > div.brookings-b > a div.footer-main-content > div.footer-main-content-info > 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.
81

Best Practices

Trust and Safety

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Insecure URLRequest Resolution
www.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
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#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`

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