Skip to content
https://migrationpolicy.org

Lighthouse Desktop

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

Detailed Report

Audit breakdown by category with detailed findings.

88

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.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-0-DIV
nodeLabel: NEWSROOM MPI EN ESPAÑOL MULTIMEDIA DONATE CONTACT SIGN UP All MPI Research Publ…
path: 1,HTML,1,BODY,4,DIV,0,HEADER,0,DIV,0,DIV,0,DIV,0,DIV
selector: div#zone-branding-wrapper > div#zone-branding > div#region-branding > div.region-inner
snippet: <div class="region-inner region-branding-inner">

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

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
/sites/default/files/advagg_css/css__Zj3mupJ9HWLAqZawvlGR...10.8 KiB157 ms
/sites/default/files/advagg_css/css__D-17SK-mW9EMuC3nTnqo...20.4 KiB237 ms
fonts.googleapis.com/css?family=Lato:300,400,700|Neuton:300,400&display=swap1012 B282 ms
/sites/default/files/advagg_css/css__EUIO5o9d6O0IIaSi5Rkc...4.0 KiB157 ms
/sites/default/files/advagg_css/css__x94EuVEyZh7cUrns7OGN...1.2 KiB157 ms
/sites/default/files/advagg_css/css__PNKmO5iPtN-GZwfw2z2C...1.7 KiB157 ms
cdnjs.cloudflare.com/ajax/libs/cookieconsent2/3.0.3/cookieconsent.min.css1.6 KiB274 ms
/sites/default/files/advagg_css/css__aHOE3rke9i3kqm85_hG4...1.0 KiB157 ms
/sites/default/files/advagg_css/css__kg7S0dNHB51gTPALGAOA...1.6 KiB157 ms
/sites/default/files/advagg_css/css__T7twZATSz9YDtA4CEs3X...2.9 KiB157 ms
/sites/default/files/advagg_css/css__ixSYFtneB1fK8gavXMeR...1.5 KiB157 ms
/sites/default/files/advagg_css/css__ZCHKR25PVyKQE5bgtOga...1.6 KiB157 ms
/sites/default/files/advagg_css/css__Tj2CzsUL_MgS6T92bqg9...1.5 KiB157 ms
/sites/default/files/advagg_css/css__-pQxvBO5FNzwBMA6-tEb...814 B157 ms
/sites/default/files/advagg_css/css__oxRXC40wYgHsYPVdUwzq...1.1 KiB157 ms
/sites/default/files/advagg_css/css__5ilbRkKneO-D5TzETdP9...961 B157 ms
/sites/default/files/advagg_css/css__SxnqPNqfGLi_nyimZ6OJ...994 B157 ms
/sites/default/files/advagg_css/css__62mm91YcFtymcxVyxnVa...882 B157 ms
/sites/default/files/advagg_css/css__HRvB4s16U0wMQnb-cgm0...845 B157 ms
/sites/default/files/advagg_css/css__0I9AOSaW4eHOR7a2-6zw...824 B157 ms
/sites/default/files/advagg_css/css__h8vL9XqZbR5p6fBA2D0s...856 B157 ms
/sites/default/files/advagg_css/css__umS_7iB8OLqD-AIc28jz...1.1 KiB157 ms
/sites/default/files/advagg_css/css__Vq3Ebb_BMHV9zeqQMfbY...1.0 KiB157 ms
/sites/default/files/advagg_css/css__BJ6Ou6QsBRtnFTmxaaka...2.9 KiB77 ms
/sites/default/files/advagg_css/css__Bqg1SDmp9CAe6XEIkqmr...1.1 KiB157 ms

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
/sites/default/files/feature_images/trump-immigration-act...300.0 s130.0 KiB
/sites/default/files/resize/source_images/Source Modal Re...300.0 s72.2 KiB
/sites/default/files/styles/slideshow_homepage/public/com...300.0 s20.6 KiB
/sites/default/files/source_images/country-resources-smal...300.0 s18.4 KiB
/sites/default/files/resize/source_images/FE-Image-Global...300.0 s16.1 KiB
/sites/default/files/styles/feature_section_thumbnail/pub...300.0 s13.7 KiB
/sites/default/files/styles/feature_section_thumbnail/pub...300.0 s12.8 KiB
/sites/default/files/styles/feature_section_thumbnail/pub...300.0 s11.9 KiB
/sites/default/files/styles/feature_section_thumbnail/pub...300.0 s11.6 KiB
/sites/default/files/resize/_CitizenshipCeremony2-cropped...300.0 s10.3 KiB
/cdn-cgi/challenge-platform/h/b/scripts/jsd/0b8fb825cb67/...14400.0 s12.4 KiB
/sites/default/files/styles/sidebar_fullwidth/public/medi...300.0 s7.4 KiB
/sites/default/files/resize/source_images/spt-2025-venezu...300.0 s7.2 KiB
www.migrationpolicy.org/sites/all/themes/custom/MPI/logo.png300.0 s6.3 KiB
/sites/default/files/styles/publication_thumbnail/public/...300.0 s5.6 KiB
/sites/default/files/resize/styles/large/public/US-map-Da...300.0 s4.7 KiB
/sites/default/files/styles/publication_thumbnail/public/...300.0 s4.5 KiB
/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312...86400.0 s10.7 KiB
/sites/default/files/styles/publication_thumbnail/public/...300.0 s4.5 KiB
/sites/default/files/styles/publication_thumbnail/public/...300.0 s4.4 KiB
/cdn-cgi/scripts/7d0fa10a/cloudflare-static/rocket-loader...2870.0 s4.3 KiB
www.migrationpolicy.org/sites/all/themes/custom/MPI/images/header-bg.jpg86400.0 s7.9 KiB
/sites/default/files/resize/commentary_photos/Constitutio...300.0 s3.0 KiB
www.migrationpolicy.org/sites/all/themes/custom/MPI/images/logo-footer.png86400.0 s4.5 KiB
www.migrationpolicy.org/misc/menu-leaf.png300.0 s869 B
/sites/all/themes/contrib/omega/omega/images/select-arrow...300.0 s821 B
www.migrationpolicy.org/sites/all/themes/custom/MPI/images/divider-section.png86400.0 s1.9 KiB
www.migrationpolicy.org/sites/all/themes/custom/MPI/images/icon-vimeo-41.png86400.0 s1.5 KiB
www.migrationpolicy.org/sites/all/themes/custom/MPI/images/icon-rss-41.png86400.0 s1.5 KiB
www.migrationpolicy.org/sites/all/themes/custom/MPI/images/icon-twitter-41.png86400.0 s1.5 KiB
www.migrationpolicy.org/sites/all/themes/custom/MPI/images/icon-podcasts-41.png86400.0 s1.5 KiB
www.migrationpolicy.org/sites/all/themes/custom/MPI/images/icon-linkedin-41.png86400.0 s1.4 KiB
www.migrationpolicy.org/sites/all/themes/custom/MPI/images/icon-linkedin.png86400.0 s1.4 KiB
/sites/all/themes/custom/MPI/images/slideshow-tab-right.png86400.0 s1.4 KiB
/sites/all/themes/custom/MPI/images/slideshow-tab-left.png86400.0 s1.3 KiB
www.migrationpolicy.org/sites/all/themes/custom/MPI/images/icon-facebook-41.png86400.0 s1.3 KiB
www.migrationpolicy.org/sites/all/themes/custom/MPI/images/icon-rss.png86400.0 s1.3 KiB
www.migrationpolicy.org/sites/all/themes/custom/MPI/images/icon-twitter.png86400.0 s1.3 KiB
www.migrationpolicy.org/sites/all/themes/custom/MPI/images/icon-vimeo.png86400.0 s1.3 KiB
www.migrationpolicy.org/sites/all/themes/custom/MPI/images/searchbox-btn.png86400.0 s1.3 KiB
www.migrationpolicy.org/sites/all/themes/custom/MPI/images/icon-podcasts.png86400.0 s1.3 KiB
www.migrationpolicy.org/sites/all/themes/custom/MPI/images/searchbox-lg-bg.jpg86400.0 s1.2 KiB
/sites/all/themes/custom/MPI/images/searchbox-lg-middle-b...86400.0 s1.2 KiB
www.migrationpolicy.org/sites/all/themes/custom/MPI/images/btn-primary.png86400.0 s1.2 KiB
www.migrationpolicy.org/sites/all/themes/custom/MPI/images/icon-facebook.png86400.0 s1.2 KiB
/sites/all/themes/custom/MPI/images/pagedot-dark-sidebar.png86400.0 s1.0 KiB
www.migrationpolicy.org/sites/all/themes/custom/MPI/images/dividerline-large.png86400.0 s1016 B
/sites/all/themes/custom/MPI/images/pagedot-light-sidebar...86400.0 s1013 B
www.migrationpolicy.org/sites/all/themes/custom/MPI/images/navbar-bg-main.jpg86400.0 s941 B
www.migrationpolicy.org/sites/all/themes/custom/MPI/images/header-wrapper-bg.jpg86400.0 s935 B
www.migrationpolicy.org/sites/all/themes/custom/MPI/images/sidebar-shadow.jpg86400.0 s914 B
www.migrationpolicy.org/sites/all/themes/custom/MPI/images/home-slideshow-bg.jpg86400.0 s911 B
www.migrationpolicy.org/sites/all/themes/custom/MPI/images/footer-top-bg.jpg86400.0 s901 B

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLResource SizeEst Savings
A family takes a photo in Washington, DC. div.field-items > div.field-item > div.media > img.media__element
/sites/default/files/styles/feature_section_thumbnail/pub...12.9 KiB6.8 KiB
A crowd in Benin City, Nigeria. (Photo: IOM/Agara Barinedum) div.field-items > div.field-item > div.media > img.media__element
/sites/default/files/styles/feature_section_thumbnail/pub...12.1 KiB6.0 KiB
A farmer in the Kurdistan region of Iraq. div.field-items > div.field-item > div.media > img.media__element
/sites/default/files/styles/feature_section_thumbnail/pub...11.1 KiB5.1 KiB
The Thurgood Marshall U.S. Courthouse in New York City. div.field-items > div.field-item > div.media > img.media__element
/sites/default/files/styles/feature_section_thumbnail/pub...10.8 KiB4.8 KiB

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

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: 80 ms 16.2 KiB
URLTransfer SizeEst Savings
/sites/default/files/advagg_css/css__D-17SK-mW9EMuC3nTnqo...19.6 KiB16.2 KiB

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 28.1 KiB
URLTransfer SizeEst Savings
/sites/default/files/advagg_js/js__H5AFmq1RrXKsrazzPq_xPQ...7.7 KiB5.4 KiB
/sites/default/files/advagg_js/js__jY3-3CF_aW2-zV7M-ZJG0a...8.2 KiB5.0 KiB
/sites/default/files/advagg_js/js__vQIXO4Bzk55YCNsg1V5-ap...13.3 KiB4.5 KiB
/sites/default/files/advagg_js/js__Gd0f7Gamar7qy49d9FeUr2...5.3 KiB4.3 KiB
/sites/default/files/advagg_js/js__pqoYaVR8NVhof-vNXe50j2...5.4 KiB3.8 KiB
/sites/default/files/advagg_js/js__TjjvjYnO6dWXLXrfnE1oKz...5.8 KiB2.6 KiB
/sites/default/files/advagg_js/js__7sLyhfVk5WPZWYflKUVVpS...4.8 KiB2.6 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: 0.0 ms 182.4 KiB
URLTransfer SizeEst Savings
www.googletagmanager.com/gtag/js?id=G-G6BWCDB2NE&cx=c&gtm=4e64k1153.7 KiB65.0 KiB
www.googletagmanager.com/gtm.js?id=GTM-TPSKCBM130.9 KiB64.4 KiB
ajax.googleapis.com/ajax/libs/jqueryui/1.10.2/jquery-ui.min.js59.3 KiB53.0 KiB

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

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: 364 ms
URLTime Spent
migrationpolicy.org/364 ms
www.migrationpolicy.org/0.0 ms
●Time to Interactive 1.7 s
●Layout shift culprits
●Optimize DOM size
●Font display
●Forced reflow
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●Max Potential First Input Delay 50 ms
●Minify CSS
●Avoids enormous network payloads Total size was 1,099 KiB
●User Timing marks and measures 5 user timings
●JavaScript execution time 0.2 s
●Minimizes main-thread work 0.6 s
●Image elements have explicit `width` and `height`
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 30 ms
●Server Backend Latencies 100 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 40 ms
●Avoid large layout shifts 4 layout shifts found
○INP breakdown
○Avoid long main-thread tasks
○Avoid non-composited animations
63

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.

ARIA

Some ARIA roles have required attributes that describe the state of the element to screen readers. Learn more about roles and required attributes.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div#form-text-63-wrapper > div.views-widget > div.form-item > input#form-text-63 div#form-text-63-wrapper > div.views-widget > div.form-item > input#form-text-63

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

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
We use cookies to broadly understand traffic to this website. Continue browsing… body.html > div.cc-window > span#cookieconsent:desc
Learn more about cookies body.html > div.cc-window > span#cookieconsent:desc > a.cc-link
SHORT READS div.group-right > div.field > div.field-items > div.field-item
APRIL 2026 div.field > div.field-items > div.field-item > span.date-display-single

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
Native Language Assessments for K-12 English Learners: A 2025 State-Level Snaps… div.field > div.field-items > div.field-item > h5

These are opportunities to improve keyboard navigation in your application.

Names and labels

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.field-content > p > a > img div.field-content > p > a > img
div.content > p > a > img div.content > p > a > img
div.content > p > a > img div.content > p > a > img
div.content > p > a > img div.content > p > a > img
div.content > p > a > img div.content > p > a > img
div.content > p > a > img div.content > p > a > img
div.content > p > a > img div.content > p > a > img

Adding discernable and accessible text to input buttons may help screen reader users understand the purpose of the input button. Learn more about input buttons.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.views-exposed-widgets > div#edit-submit-2-search-fullsite-page-1-wrapper > div.views-widget > input#edit-submit-2-search-fullsite-page-1 div.views-exposed-widgets > div#edit-submit-2-search-fullsite-page-1-wrapper > div.views-widget > input#edit-submit-2-search-fullsite-page-1

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#form-text-63-wrapper > div.views-widget > div.form-item > input#form-text-63 div#form-text-63-wrapper > div.views-widget > div.form-item > input#form-text-63

Form elements without effective labels can create frustrating experiences for screen reader users. Learn more about the `select` element.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
All MPI Research Publications Articles Multimedia Events News div#edit-field-publication-type-wrapper > div.views-widget > div.form-item > select#edit-field-publication-type

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.views-field > div.field-content > p > a div.views-field > div.field-content > p > a
div.block-inner > div.content > p > a div.block-inner > div.content > p > a
div.block-inner > div.content > p > a div.block-inner > div.content > p > a
div.block-inner > div.content > p > a div.block-inner > div.content > p > a
div.block-inner > div.content > p > a div.block-inner > div.content > p > a
div.block-inner > div.content > p > a div.block-inner > div.content > p > a
div.block-inner > div.content > p > a div.block-inner > div.content > p > 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.

Best practices

Disabling zooming is problematic for users with low vision who rely on screen magnification to properly see the contents of a web page. Learn more about the viewport meta tag.

Why this matters

Informational: a Permissions-Policy directive showing feature -> allowed origins.

Source: MDN Permissions-Policy

Failing Elements
head > meta#viewport head > meta#viewport

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
1 div#slideshow-nav-container > div#slideshow-nav-outer-center > div#slideshow-nav > a.activeSlide
2 div#slideshow-nav-container > div#slideshow-nav-outer-center > div#slideshow-nav > a
3 div#slideshow-nav-container > div#slideshow-nav-outer-center > div#slideshow-nav > a
4 div#slideshow-nav-container > div#slideshow-nav-outer-center > div#slideshow-nav > a
5 div#slideshow-nav-container > div#slideshow-nav-outer-center > div#slideshow-nav > a
6 div#slideshow-nav-container > div#slideshow-nav-outer-center > div#slideshow-nav > a
1 div.view > div.view-header > div#slideshow-nav-sidebar > a.activeSlide
2 div.view > div.view-header > div#slideshow-nav-sidebar > a
3 div.view > div.view-header > div#slideshow-nav-sidebar > a
4 div.view > div.view-header > div#slideshow-nav-sidebar > a
5 div.view > div.view-header > div#slideshow-nav-sidebar > a
6 div.view > div.view-header > div#slideshow-nav-sidebar > a
7 div.view > div.view-header > div#slideshow-nav-sidebar > a

These items highlight common accessibility best practices.

Visible text labels that do not match the accessible name can result in a confusing experience for screen reader users. Learn more about accessible names.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
I understand body.html > div.cc-window > div.cc-compliance > a.cc-btn
○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]` values are valid
●`[aria-*]` attributes have valid values
●`[aria-*]` attributes are valid and not misspelled
●`button`, `link`, and `menuitem` elements have accessible names
●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
●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.
●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
●Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
●Document has a main landmark.
●Deprecated ARIA roles were not used
●Identical links have the same purpose.
○`[accesskey]` values are unique
○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
○Buttons have an accessible name
○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
○The document does not use `<meta http-equiv="refresh">`
○`<object>` elements have alternate text
○Skip links are focusable.
○`<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.
○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

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
SharedStorage
www.migrationpolicy.org/cdn-cgi/challenge-platform/scripts/jsd/main.js
StorageType.persistent is deprecated. Please use standardized navigator.storage instead.
www.migrationpolicy.org/cdn-cgi/challenge-platform/scripts/jsd/main.js
Fledge
www.migrationpolicy.org/cdn-cgi/challenge-platform/scripts/jsd/main.js
●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
●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 DOM-based XSS with Trusted Types
●Detected JavaScript libraries
●Page has valid source maps
○Redirects HTTP traffic to HTTPS
○Mitigate clickjacking with XFO or CSP
77

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

Meta descriptions may be included in search results to concisely summarize page content. Learn more about the meta description.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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.migrationpolicy.org/article/top-statistics-global-migration-migrantsRead More

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.field-content > p > a > img div.field-content > p > a > img
div.content > p > a > img div.content > p > a > img
div.content > p > a > img div.content > p > a > img
div.content > p > a > img div.content > p > a > img
div.content > p > a > img div.content > p > a > img
div.content > p > a > img div.content > p > a > img
div.content > p > a > img div.content > p > a > img

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
●Page has successful HTTP status code
●Links are crawlable
●robots.txt is valid
●Document has a valid `hreflang`
●Document has a valid `rel=canonical`

Send Feedback