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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.

23

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
app.termly.io/resource-blocker/d4a1a3cc-98e9-4b51-87b4-0fefd2cc2de614400.0 s143.5 KiB
/pagead/managed/js/activeview/current/ufs_web_display.js3600.0 s73.1 KiB
i.ytimg.com/vi/2mISrfawDOw/sddefault.jpg7200.0 s58.2 KiB
i.ytimg.com/vi/pN_Qq-5Kvh0/sddefault.jpg7200.0 s48.8 KiB
i.ytimg.com/vi/hmRMZIaoyAU/sddefault.jpg7200.0 s48.2 KiB
i.ytimg.com/vi/z2nBU30dAAQ/sddefault.jpg7200.0 s47.8 KiB
i.ytimg.com/vi/Pc59xKQ6s4k/sddefault.jpg7200.0 s44.8 KiB
i.ytimg.com/vi/wvOe5678rp4/sddefault.jpg7200.0 s30.5 KiB
i.ytimg.com/vi_webp/XltuU_y4cpg/sddefault.webp7200.0 s23.9 KiB
imagesnep.admaster.cc/ML/5c63e1d31e6d20f42e6e90c7104693f3__scv1__622x368.webp3600.0 s21.7 KiB
i.ytimg.com/vi_webp/lxlZ1tV1dUE/sddefault.webp7200.0 s18.8 KiB
/cdn-cgi/challenge-platform/h/b/scripts/jsd/0b8fb825cb67/...14400.0 s11.9 KiB
app.termly.io/resource-blocker/support/894-6156b36a131577c56e7e.min.js14400.0 s8.4 KiB
/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312...86400.0 s10.7 KiB
app.termly.io/resource-blocker/support/808-26e9c6c7a3bd048ed656.min.js14400.0 s3.2 KiB
app.termly.io/resource-blocker/support/524-7d36cb122791702e3df2.min.js14400.0 s2.7 KiB
/pagead/js/r20260420/r20110914/client/qs_click_protection...1209600.0 s8.5 KiB
static.admaster.cc/js/template/style/style_banner_979342.css3600.0 s781 B
app.termly.io/resource-blocker/support/377-e518d8a5c599aa1c5977.min.js14400.0 s872 B
static.doubleclick.net/instream/ad_status.js900.0 s494 B
/pagead/js/r20260420/r20110914/client/window_focus_fy2021.js1209600.0 s1.2 KiB
static.doubleclick.net/instream/ad_status.js900.0 s0 B
static.doubleclick.net/instream/ad_status.js900.0 s0 B
static.doubleclick.net/instream/ad_status.js900.0 s0 B
static.doubleclick.net/instream/ad_status.js900.0 s0 B
static.doubleclick.net/instream/ad_status.js900.0 s0 B
static.doubleclick.net/instream/ad_status.js900.0 s0 B
static.doubleclick.net/instream/ad_status.js900.0 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:0.24449] map[node:map[boundingRect:map[bottom:15368 height:14995 left:0 right:412 top:373 width:412] lhId:page-19-DIV nodeLabel:Former advisor to Steve Jobs says new Apple CEO is exactly what’s needed: an en… path:1,HTML,1,BODY,7,DIV selector:body.home > div.wrap snippet:<div class="wrap container-lg mt-3 mb-5" role="document"> type:node] score:0.24449 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:678 height:305 left:15 right:397 top:373 width:382] lhId:page-7-IMG nodeLabel:div.home-featured-left-column > div#featured-story > a > img.img-fluid path:1,HTML,1,BODY,7,DIV,0,DIV,0,MAIN,0,DIV,0,DIV,0,DIV,0,DIV,0,A,0,IMG selector:div.home-featured-left-column > div#featured-story > a > img.img-fluid snippet:<img width="1260" height="1008" src="https://cdn.geekwire.com/wp-content/uploads/2026/04/Apple-John-Ternus-Tim-…" class="img-fluid wp-post-image" alt="" decoding="async" fetchpriority="high" srcset="https://cdn.geekwire.com/wp-content/uploads/2026/04/Apple-John-Ternus-Tim-…" sizes="(max-width: 1260px) 100vw, 1260px"> type:node]]] type:subitems]]]

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:source label:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:9.456 source:map[column:197 line:904 type:source-location url:https://metrics.geekwire.com/gtag/js?id=G-PD6PSC6MVD&cx=c&gtm=4e64h1&sign=22f0eaf94cbf2fca59481efdfdeeb5a3762e24ec53318c5e36b2769943f2ac57_20260421 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:28.014 source:map[type:text value:[unattributed]]] map[reflowTime:1.927 source:map[column:8658 line:0 type:source-location url:https://www.geekwire.com/cdn-cgi/challenge-platform/scripts/jsd/main.js urlProvider:network]] map[reflowTime:0.3 source:map[column:142878 line:18 type:source-location url:https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604170101/pubads_impl.js?cb=31097963 urlProvider:network]] map[reflowTime:0.615 source:map[column:241846 line:18 type:source-location url:https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604170101/pubads_impl.js?cb=31097963 urlProvider:network]] map[reflowTime:9.456 source:map[column:55 line:901 type:source-location url:https://metrics.geekwire.com/gtag/js?id=G-PD6PSC6MVD&cx=c&gtm=4e64h1&sign=22f0eaf94cbf2fca59481efdfdeeb5a3762e24ec53318c5e36b2769943f2ac57_20260421 urlProvider:network]]]

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
David Hertzog with Muon g-2 storage ring at Fermilab article.teaser > div.teaser-thumb > a > img.attachment-featured
cdn.geekwire.com/wp-content/uploads/2026/04/hertzog1-1536x1152.jpg396.8 KiB395.5 KiB
div.col-12 > article.flexible-content-item > a > img.img-fluid div.col-12 > article.flexible-content-item > a > img.img-fluid
cdn.geekwire.com/wp-content/uploads/2026/04/lightrail-1536x1152.jpeg330.4 KiB312.6 KiB
article.teaser > div.teaser-thumb > a > img.attachment-featured article.teaser > div.teaser-thumb > a > img.attachment-featured
/wp-content/uploads/2026/04/Katie_Wilson_Seattle_mayoral_...298.2 KiB297.0 KiB
article.teaser > div.teaser-thumb > a > img.attachment-featured article.teaser > div.teaser-thumb > a > img.attachment-featured
cdn.geekwire.com/wp-content/uploads/2026/04/microsoft-sign-1536x843.jpg279.1 KiB278.3 KiB
article.teaser > div.teaser-thumb > a > img.attachment-featured article.teaser > div.teaser-thumb > a > img.attachment-featured
cdn.geekwire.com/wp-content/uploads/2026/04/IMG_4116-1536x1152.jpg271.5 KiB270.4 KiB
div.col-12 > article.flexible-content-item > a > img.img-fluid div.col-12 > article.flexible-content-item > a > img.img-fluid
/wp-content/uploads/2026/03/Upcoming_Events_Newsletter_19...213.2 KiB200.1 KiB
article.teaser > div.teaser-thumb > a > img.attachment-featured article.teaser > div.teaser-thumb > a > img.attachment-featured
cdn.geekwire.com/wp-content/uploads/2023/03/GeekWirePodcast-630x394.png145.3 KiB144.3 KiB
div.home-featured-left-column > div#featured-story > a > img.img-fluid div.home-featured-left-column > div#featured-story > a > img.img-fluid
/wp-content/uploads/2026/04/Apple-John-Ternus-Tim-Cook-1-...114.8 KiB95.8 KiB
div.home-featured-left-column > article.teaser > a.teaser-thumb > img.attachment-225x225 div.home-featured-left-column > article.teaser > a.teaser-thumb > img.attachment-225x225
cdn.geekwire.com/wp-content/uploads/2026/04/artly_225x225.png94.1 KiB85.8 KiB
Jeff Bezos article.teaser > div.teaser-thumb > a > img.attachment-featured
cdn.geekwire.com/wp-content/uploads/2018/09/170405-blue-chat-630x461.jpg77.2 KiB76.0 KiB
div.col-12 > article.sponsored-post > a > img.img-fluid div.col-12 > article.sponsored-post > a > img.img-fluid
/wp-content/uploads/2026/04/Katie_Wilson_Seattle_mayoral_...81.8 KiB64.6 KiB
div.col-12 > article.flexible-content-item > a > img.img-fluid div.col-12 > article.flexible-content-item > a > img.img-fluid
cdn.geekwire.com/wp-content/uploads/2025/09/Screenshot-2025-07-23-192457.png62.6 KiB49.2 KiB
div.row > div.col > div.presented_by > img.img-fluid div.row > div.col > div.presented_by > img.img-fluid
/wp-content/uploads/2026/03/amazonsustainability_logo_res...40.4 KiB39.5 KiB
article.teaser > div.teaser-thumb > a > img.attachment-100x100 article.teaser > div.teaser-thumb > a > img.attachment-100x100
cdn.geekwire.com/wp-content/uploads/2026/04/summationbbrd-150x150.jpeg39.6 KiB37.9 KiB
article.teaser > div.teaser-thumb > a > img.attachment-100x100 article.teaser > div.teaser-thumb > a > img.attachment-100x100
/wp-content/uploads/2026/02/Asha-Sharma-and-Matt-Booty-Pr...35.4 KiB33.8 KiB
div.col-12 > article.sponsored-post > a > img.img-fluid div.col-12 > article.sponsored-post > a > img.img-fluid
/wp-content/uploads/2024/07/Helion-Kirtley-and-Inslee-630...59.1 KiB32.5 KiB
GeekWire Week in Review article.teaser > div.teaser-thumb > a > img.attachment-featured
cdn.geekwire.com/wp-content/uploads/2015/11/geekwire-week-in-review1-620x326.png21.6 KiB21.0 KiB
body.home > iframe body.home > iframe
imagesnep.admaster.cc/ML/5c63e1d31e6d20f42e6e90c7104693f3__scv1__622x368.webp21.2 KiB15.1 KiB
GeekWire Logo div#header-top-row > div#navbar-logo > a.navbar-brand > img.img-fluid
www.geekwire.com/wp-content/themes/geekwire/dist/images/geekwire-nav-logo.png10.7 KiB10.0 KiB

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.

More than 4 preconnect connections were found. These should be used sparingly and only to the most important origins.
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.

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: 802 ms
URLTime Spent
geekwire.com/802 ms
www.geekwire.com/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
Former advisor to Steve Jobs says new Apple CEO is exactly what’s needed: an en… body.home > div.wrap
0.244

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: 0.0 ms 85.3 KiB

Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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.

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 Evaluation3.0 s
Other1.9 s
Style & Layout624 ms
Script Parsing & Compilation315 ms
Parse HTML & CSS207 ms
Garbage Collection131 ms
Rendering62 ms

Many navigations are performed by going back to a previous page, or forwards again. The back/forward cache (bfcache) can speed up these return navigations. Learn more about the bfcache

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failure reasonFailure type
Internal error.Not actionable

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
GeekWire Logo div#header-top-row > div#navbar-logo > a.navbar-brand > img.img-fluid
www.geekwire.com/wp-content/themes/geekwire/dist/images/geekwire-nav-logo.png

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

Optimize DOM size
LCP breakdown
LCP request discovery
Modern HTTP
Optimize viewport for mobile
Minify CSS
Minify JavaScript
User Timing marks and measures 19 user timings
Avoid long main-thread tasks 20 long tasks found
Network Requests
Network Round Trip Times 120 ms
Server Backend Latencies 230 ms
Tasks
Diagnostics
Metrics
Screenshot Thumbnails
Final Screenshot
Script Treemap Data
Resources Summary
Initial server response time was short Root document took 30 ms
INP breakdown
Avoid non-composited animations
97

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

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.d-flex > div.home-featured-left-column > div#featured-story > a div.d-flex > div.home-featured-left-column > div#featured-story > a
div.home-featured-left-column > article.teaser > div.teaser-thumb > a div.home-featured-left-column > article.teaser > div.teaser-thumb > a
div.home-featured-left-column > article.teaser > div.teaser-thumb > a div.home-featured-left-column > article.teaser > div.teaser-thumb > a
div.d-flex > div.home-featured-left-column > article.teaser > a.teaser-thumb div.d-flex > div.home-featured-left-column > article.teaser > a.teaser-thumb
div.home-featured-left-column > article.teaser > div.teaser-thumb > a div.home-featured-left-column > article.teaser > div.teaser-thumb > a
div.home-featured-left-column > article.teaser > div.teaser-thumb > a div.home-featured-left-column > article.teaser > div.teaser-thumb > a
div.home-featured-left-column > article.teaser > div.teaser-thumb > a div.home-featured-left-column > article.teaser > div.teaser-thumb > a
div.row > div.col-12 > article.flexible-content-item > a div.row > div.col-12 > article.flexible-content-item > a
div.row > div.col-12 > article.flexible-content-item > a div.row > div.col-12 > article.flexible-content-item > a
div.row > div.col-12 > article.flexible-content-item > a div.row > div.col-12 > article.flexible-content-item > a
div.row > div.col-12 > article.flexible-content-item > a div.row > div.col-12 > article.flexible-content-item > a
div.home-feed > article.teaser > div.teaser-thumb > a div.home-feed > article.teaser > div.teaser-thumb > a
div.row > div.col-12 > article.sponsored-post > a div.row > div.col-12 > article.sponsored-post > a
div.home-feed > article.teaser > div.teaser-thumb > a div.home-feed > article.teaser > div.teaser-thumb > a
div.home-feed > article.teaser > div.teaser-thumb > a div.home-feed > article.teaser > div.teaser-thumb > a
div.row > div.col-12 > article.sponsored-post > a div.row > div.col-12 > article.sponsored-post > a
div.home-feed > article.teaser > div.teaser-thumb > a div.home-feed > article.teaser > div.teaser-thumb > a
div.home-feed > article.teaser > div.teaser-thumb > a div.home-feed > article.teaser > div.teaser-thumb > a
div.home-feed > article.teaser > div.teaser-thumb > a div.home-feed > article.teaser > div.teaser-thumb > a
div.home-feed > article.teaser > div.teaser-thumb > a div.home-feed > article.teaser > div.teaser-thumb > a
div.home-feed > article.teaser > div.teaser-thumb > a div.home-feed > article.teaser > div.teaser-thumb > a
div.home-feed > article.teaser > div.teaser-thumb > a div.home-feed > article.teaser > div.teaser-thumb > a
div.home-feed > article.teaser > div.teaser-thumb > a div.home-feed > article.teaser > div.teaser-thumb > a
div.home-feed > article.teaser > div.teaser-thumb > a div.home-feed > article.teaser > div.teaser-thumb > a
div.home-feed > article.teaser > div.teaser-thumb > a div.home-feed > article.teaser > div.teaser-thumb > a
div.home-feed > article.teaser > div.teaser-thumb > a div.home-feed > article.teaser > div.teaser-thumb > a
div.home-feed > article.teaser > div.teaser-thumb > a div.home-feed > article.teaser > div.teaser-thumb > a
div.home-feed > article.teaser > div.teaser-thumb > a div.home-feed > article.teaser > div.teaser-thumb > a
div.home-feed > article.teaser > div.teaser-thumb > a div.home-feed > article.teaser > div.teaser-thumb > a
div.home-feed > article.teaser > div.teaser-thumb > a div.home-feed > article.teaser > div.teaser-thumb > a
div.home-feed > article.teaser > div.teaser-thumb > a div.home-feed > article.teaser > div.teaser-thumb > a
div.home-feed > article.teaser > div.teaser-thumb > a div.home-feed > article.teaser > div.teaser-thumb > a
div.home-feed > article.teaser > div.teaser-thumb > a div.home-feed > article.teaser > div.teaser-thumb > a
div.home-feed > article.teaser > div.teaser-thumb > a div.home-feed > article.teaser > div.teaser-thumb > a
div.home-feed > article.teaser > div.teaser-thumb > a div.home-feed > article.teaser > div.teaser-thumb > a
div.home-feed > article.teaser > div.teaser-thumb > a div.home-feed > article.teaser > div.teaser-thumb > a
div.home-feed > article.teaser > div.teaser-thumb > a div.home-feed > article.teaser > div.teaser-thumb > a
div.home-feed > article.teaser > div.teaser-thumb > a div.home-feed > article.teaser > div.teaser-thumb > a
div.home-feed > article.teaser > div.teaser-thumb > a div.home-feed > article.teaser > div.teaser-thumb > a
div.col-xs-12 > div.row > div.col-xs-4 > a div.col-xs-12 > div.row > div.col-xs-4 > a
div.col-xs-12 > div.row > div.col-xs-4 > a div.col-xs-12 > div.row > div.col-xs-4 > a
div.col-xs-12 > div.row > div.col-xs-4 > a div.col-xs-12 > div.row > div.col-xs-4 > a
div.col-xs-12 > div.row > div.col-xs-4 > a div.col-xs-12 > div.row > div.col-xs-4 > a
div.col-xs-12 > div.row > div.col-xs-4 > a div.col-xs-12 > div.row > div.col-xs-4 > 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
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.
`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
Background and foreground colors have a sufficient contrast ratio
Document has a `<title>` element
`<frame>` or `<iframe>` elements have a title
`<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
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
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
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
`<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.
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.
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
StorageType.persistent is deprecated. Please use standardized navigator.storage instead.
Fledge
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
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

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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