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Audit Complete

Results for https://www.deepmind.com

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Spain Spain · Madrid Completed: Apr 7, 2026 20:37 UTC
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Mobile 375 × 812

Screenshot of the audited page (Mobile 375×812)

Desktop 1440 × 900

Screenshot of the audited page (Desktop 1440×900)
C74

Site Health

Score: 74 / 100

Based on 8 categories, 0 sections

How is this calculated?

The overall score is a weighted average of individual category scores. Categories with more impact on user experience and security carry more weight.

Performance 25%Security 25%Accessibility 15%SEO 10%Infrastructure 10%Compliance 8%Content 5%Sustainability 2%

Weights reflect general web best practices. Individual needs may differ.

Top Priorities (5)

1

Content-Security-Policy header is missing

Security › Security Headers
2

HSTS header is missing

Security › Security Headers
3

No Content-Security-Policy header found

Security › Content Security Policy
4

Page weighs 41.6 MB (6.6 MB transferred)

Performance › Page Weight Budget
5

38 image-only link(s) without alt text

Accessibility › Link & Button Quality
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<a href="https://beavercheck.com/results/e518cab2-0c60-1473-2b9a-2695c53135dd"><img src="https://beavercheck.com/badge?url=https%3A%2F%2Fwww.deepmind.com" alt="BeaverCheck Score"></a>
https://beavercheck.com/badge?url=https%3A%2F%2Fwww.deepmind.com

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Lighthouse Scores

Industry-standard audits powered by Google Lighthouse.

55
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
95
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
100
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
92
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

Core Web Vitals

Key metrics that affect user experience.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

26.57 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

32.12 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

0 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.000

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

26.57 s

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

32.23 s

Detailed Report

Audit breakdown by category with detailed findings.

55

Performance

Insights

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

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

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

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

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.

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:6.457 source:map[column:33307 line:2 type:source-location url:https://deepmind.google/static/dist/site/site-abad8cda68861b08153b.js 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:47.117 source:map[type:text value:[unattributed]]] map[reflowTime:6.457 source:map[column:32842 line:1 type:source-location url:https://deepmind.google/static/dist/site/site-abad8cda68861b08153b.js urlProvider:network]] map[reflowTime:1.207 source:map[column:85921 line:204 type:source-location url:https://deepmind.google/static/dist/site/site-abad8cda68861b08153b.js urlProvider:network]] map[reflowTime:3.044 source:map[column:85504 line:204 type:source-location url:https://deepmind.google/static/dist/site/site-abad8cda68861b08153b.js urlProvider:network]]]

Each subpart has specific improvement strategies. Ideally, most of the LCP time should be spent on loading the resources, not within delays.

headings: [map[key:label label:Subpart valueType:text] map[key:duration label:Duration valueType:ms]]
items: [map[duration:317.724 label:Time to first byte subpart:timeToFirstByte] map[duration:1195.442 label:Resource load delay subpart:resourceLoadDelay] map[duration:34.761 label:Resource load duration subpart:resourceLoadDuration] map[duration:1058.893 label:Element render delay subpart:elementRenderDelay]]
lhId: page-0-IMG
nodeLabel: div.media-video-poster > div.media__container > picture.image > img.picture__image
path: 1,HTML,1,BODY,4,MAIN,0,SECTION,0,DIV,0,DIV,0,SECTION,1,DIV,0,DIV,0,DIV,0,ARTICLE,0,DIV,0,DIV,0,FIGURE,0,DIV,0,DIV,0,DIV,0,DIV,0,PICTURE,1,IMG
selector: div.media-video-poster > div.media__container > picture.image > img.picture__image
snippet: <img src="https://lh3.googleusercontent.com/sILaSdIzu5XraA6U7t26JH98KgsZNCG3T0nIjJ0w…" alt="" class="picture__image" height="1350" loading="lazy" role="presentation" width="1080">

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

lhId: page-0-IMG
nodeLabel: div.media-video-poster > div.media__container > picture.image > img.picture__image
path: 1,HTML,1,BODY,4,MAIN,0,SECTION,0,DIV,0,DIV,0,SECTION,1,DIV,0,DIV,0,DIV,0,ARTICLE,0,DIV,0,DIV,0,FIGURE,0,DIV,0,DIV,0,DIV,0,DIV,0,PICTURE,1,IMG
selector: div.media-video-poster > div.media__container > picture.image > img.picture__image
snippet: <img src="https://lh3.googleusercontent.com/sILaSdIzu5XraA6U7t26JH98KgsZNCG3T0nIjJ0w…" alt="" class="picture__image" height="1350" loading="lazy" role="presentation" width="1080">

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.

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

A long cache lifetime can speed up repeat visits to your page. Learn more about caching.

RequestCache TTLTransfer Size
/gdm-deepmind-com-prod-public/media/LLM77hTakO-MiMac/gemm...3600.0 s944.4 KiB
/Wc4sbRH1vM-98O2trHMmAxBrxb3supfqqhPGDY0AbeywOowYM6iJTaHk...86400.0 s220.5 KiB
i.ytimg.com/vi/-pGs0btGmgY/sddefault.jpg7200.0 s36.8 KiB
i.ytimg.com/vi/l3u_FAv33G0/sddefault.jpg7200.0 s34.7 KiB
i.ytimg.com/vi_webp/UALxgn1MnZo/sddefault.webp7200.0 s27.3 KiB
/i1ooSWH5ku-ejhiZP8pZcsiLJkR_eF30Hc1EDVvXR5B0l-0Cel78dyKd...86400.0 s49.6 KiB
i.ytimg.com/vi_webp/qoinGjj60Fo/sddefault.webp7200.0 s23.9 KiB
/gdm-deepmind-com-prod-public/media/LLM77hTakO-MiMac/gemm...3600.0 s20.1 KiB
/wwoXL1ZQ49uevw1WrdSSxNssJp9PR91sX44_GOZ7xitt4s2CuhWdAVye...86400.0 s39.8 KiB
i.ytimg.com/vi_webp/PqVbypvxDto/sddefault.webp7200.0 s20.2 KiB
/static/images/fallback/video_poster_fallback_light.57b61...600.0 s10.2 KiB
/KVYCjJ-L8ZrKP6nkzJPdqnEfhFyFHJ25d8a6jxkRQhox1SNuBGh3ADx3...86400.0 s21.6 KiB
/iqcya9tQ63ONBLbtfrXcAVcnAGclO6JL7tShy0BQxbmAMffIUT9ByMWp...86400.0 s17.1 KiB
/sILaSdIzu5XraA6U7t26JH98KgsZNCG3T0nIjJ0wmrZu5VBv5fh6ruPm...86400.0 s15.6 KiB
/Wo_T3qi4nWB88hUYwcx-uN9x_RuKbUeruEWI_oVcbFcoLdPb1dO8coGk...86400.0 s14.5 KiB
/sILaSdIzu5XraA6U7t26JH98KgsZNCG3T0nIjJ0wmrZu5VBv5fh6ruPm...86400.0 s11.1 KiB
/static/images/fallback/video_poster_fallback_dark.4d55bc...600.0 s4.6 KiB
/ynuk8_WhOymp6Yk9fKHtJz1jMj-Dtgzw_OZ_moKhp5vUskxdFCKiPw2W...86400.0 s8.4 KiB
/gdm-deepmind-com-prod-public/media/original_images/gemma...3600.0 s3.3 KiB
i.ytimg.com/vi/-pGs0btGmgY/default.jpg7200.0 s3.6 KiB
/gdm-deepmind-com-prod-public/media/original_images/model...3600.0 s3.3 KiB
/gdm-deepmind-com-prod-public/media/original_images/nav__...3600.0 s3.2 KiB
/gdm-deepmind-com-prod-public/media/images/footer_gemma__...3600.0 s3.1 KiB
/gdm-deepmind-com-prod-public/media/images/footer_gemma__...3600.0 s3.1 KiB
i.ytimg.com/vi_webp/UALxgn1MnZo/default.webp7200.0 s3.1 KiB
i.ytimg.com/vi/l3u_FAv33G0/default.jpg7200.0 s2.8 KiB
/gdm-deepmind-com-prod-public/media/original_images/nav__...3600.0 s2.6 KiB
/vqBFgK2g6eUQI10L2Hb8PH9kZVZTlmZeRjdvcjuJI8O4UkOhyQTI8Y9i...86400.0 s4.9 KiB
i.ytimg.com/vi_webp/PqVbypvxDto/default.webp7200.0 s2.3 KiB
/gdm-deepmind-com-prod-public/media/original_images/nav__...3600.0 s1.9 KiB
/gdm-deepmind-com-prod-public/media/original_images/nav__...3600.0 s1.5 KiB
/gdm-deepmind-com-prod-public/media/original_images/nav__...3600.0 s1.4 KiB
/gdm-deepmind-com-prod-public/media/original_images/nav__...3600.0 s1.2 KiB
/gdm-deepmind-com-prod-public/media/original_images/nav__...3600.0 s1.2 KiB
/gdm-deepmind-com-prod-public/media/original_images/nav__...3600.0 s1.2 KiB
/gdm-deepmind-com-prod-public/media/original_images/nav__...3600.0 s1.2 KiB
/gdm-deepmind-com-prod-public/media/original_images/nav__...3600.0 s1.2 KiB
/gdm-deepmind-com-prod-public/media/original_images/nav__...3600.0 s1.1 KiB
/gdm-deepmind-com-prod-public/media/original_images/nav__...3600.0 s1.1 KiB
/gdm-deepmind-com-prod-public/media/original_images/nav__...3600.0 s1.1 KiB
/gdm-deepmind-com-prod-public/media/original_images/nav__...3600.0 s1.1 KiB
/gdm-deepmind-com-prod-public/media/original_images/nav__...3600.0 s990 B
/gdm-deepmind-com-prod-public/media/original_images/nav__...3600.0 s949 B
/gdm-deepmind-com-prod-public/media/original_images/nav__...3600.0 s861 B
static.doubleclick.net/instream/ad_status.js900.0 s494 B
i.ytimg.com/vi_webp/UALxgn1MnZo/sddefault.webp7200.0 s0 B
i.ytimg.com/vi_webp/qoinGjj60Fo/sddefault.webp7200.0 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
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
/gdm-deepmind-com-prod-public/media/LLM77hTakO-MiMac/gemm...3600.0 s0 B

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

URLResource SizeEst Savings
figure.media-video-figure > div.media-video-container > div.video-wrapper > video.media-video figure.media-video-figure > div.media-video-container > div.video-wrapper > video.media-video
/Wc4sbRH1vM-98O2trHMmAxBrxb3supfqqhPGDY0AbeywOowYM6iJTaHk...220.3 KiB203.8 KiB
A dynamic, motion-blurred shot of a woman in a vibrant red traditional dress fe… div.block-image > div.media-image-block > picture.image > img.picture__image
/wwoXL1ZQ49uevw1WrdSSxNssJp9PR91sX44_GOZ7xitt4s2CuhWdAVye...39.7 KiB33.2 KiB
figure.media-video-figure > div.media-video-container > div.video-wrapper > video.media-video figure.media-video-figure > div.media-video-container > div.video-wrapper > video.media-video
/i1ooSWH5ku-ejhiZP8pZcsiLJkR_eF30Hc1EDVvXR5B0l-0Cel78dyKd...49.5 KiB31.0 KiB
div.media-content-wrapper > div.media__container > picture.image > img.picture__image div.media-content-wrapper > div.media__container > picture.image > img.picture__image
/KVYCjJ-L8ZrKP6nkzJPdqnEfhFyFHJ25d8a6jxkRQhox1SNuBGh3ADx3...21.5 KiB17.3 KiB
div.media-content-wrapper > div.media__container > picture.image > img.picture__image div.media-content-wrapper > div.media__container > picture.image > img.picture__image
/iqcya9tQ63ONBLbtfrXcAVcnAGclO6JL7tShy0BQxbmAMffIUT9ByMWp...17.1 KiB13.7 KiB

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.

TTI

Redirects introduce additional delays before the page can be loaded. Learn how to avoid page redirects.

Estimated savings: 902 ms
URLTime Spent
www.deepmind.com/902 ms
deepmind.google/0.0 ms

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.

Estimated savings: 600 ms 69.4 KiB
URLTransfer SizeEst Savings
deepmind.google/static/dist/css/site.78ab7ee7ba32d1c91f6a.css85.2 KiB69.4 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.

Estimated savings: 1.2 s 222.9 KiB
URLTransfer SizeEst Savings
deepmind.google/static/dist/site/site-abad8cda68861b08153b.js154.9 KiB84.9 KiB
www.googletagmanager.com/gtm.js?id=GTM-NRDHXJGK152.2 KiB77.2 KiB
www.googletagmanager.com/gtag/js?id=G-LS8HVHCNQ0&cx=c&gtm=4e6460146.6 KiB60.8 KiB

Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.

URLTransfer Size
/s/googlesymbols/v414/HhyqU5Ak9u-oMExPeInvcuEmPosC9zS3FYk...2.4 MiB
/gdm-deepmind-com-prod-public/media/LLM77hTakO-MiMac/gemm...944.4 KiB
www.youtube.com/s/player/57fefa84/player_embed_es6.vflset/en_US/base.js432.9 KiB
www.youtube.com/s/player/2430d1b0/player_embed_es6.vflset/en_US/base.js432.7 KiB
/Wc4sbRH1vM-98O2trHMmAxBrxb3supfqqhPGDY0AbeywOowYM6iJTaHk...220.5 KiB
/s/_/ytembeds/_/js/k=ytembeds.base.en_US.I-saIP3mOa8.2021...207.3 KiB
deepmind.google/static/dist/site/site-abad8cda68861b08153b.js154.9 KiB
www.googletagmanager.com/gtm.js?id=GTM-NRDHXJGK152.5 KiB
www.googletagmanager.com/gtag/js?id=G-LS8HVHCNQ0&cx=c&gtm=4e6460146.6 KiB
/s/_/ytembeds/_/js/k=ytembeds.base.en_US.I-saIP3mOa8.2021...130.4 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.

URLTotal CPU TimeScript EvaluationScript Parse
deepmind.google/static/dist/site/site-abad8cda68861b08153b.js4.8 s1.5 s43 ms
Unattributable1.4 s44 ms0.0 ms
deepmind.google/789 ms13 ms2.7 ms
www.googletagmanager.com/gtm.js?id=GTM-NRDHXJGK431 ms364 ms62 ms
www.googletagmanager.com/gtag/js?id=G-LS8HVHCNQ0&cx=c&gtm=4e6460284 ms229 ms53 ms
www.gstatic.com/glue/cookienotificationbar/cookienotificationbar.min.js119 ms41 ms6.3 ms
www.youtube.com/s/player/57fefa84/www-widgetapi.vflset/www-widgetapi.js65 ms48 ms2.8 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

CategoryTime Spent
Other4.3 s
Script Evaluation2.3 s
Style & Layout822 ms
Rendering195 ms
Script Parsing & Compilation171 ms
Garbage Collection153 ms
Parse HTML & CSS139 ms

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

●Layout shift culprits
●Optimize DOM size
●Modern HTTP
●Render blocking requests
●Optimize viewport for mobile
●Max Potential First Input Delay 20 ms
●Minify CSS
●Minify JavaScript
●User Timing marks and measures 5 user timings
●Avoid long main-thread tasks 13 long tasks found
●Avoid non-composited animations 1 animated element found
●Image elements have explicit `width` and `height`
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 40 ms
●Server Backend Latencies 150 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 40 ms
○INP breakdown
○Avoid large layout shifts
95

Accessibility

These checks highlight opportunities to improve the accessibility of your web app. Automatic detection can only detect a subset of issues and does not guarantee the accessibility of your web app, so manual testing is also encouraged.

ARIA

Some ARIA parent roles must contain specific child roles to perform their intended accessibility functions. Learn more about roles and required children elements.

Failing Elements
10 years of AlphaGo: The turning point for AI Exactly one decade later, we loo… section#the-podcast > div.grid__inner > div#tabs--2bc42e7d-d9c6-4828-8a36-6edf18d265ef > div.tabs__tablist

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.

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.

Failing Elements
Google DeepMind DeepMind div.left-menu > div.site-switcher > div.site-switcher__bar > a.site-switcher__home
○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]`s are contained by their required parent element
●`[role]` values are valid
●`[aria-*]` attributes have valid values
●`[aria-*]` attributes are valid and not misspelled
●Buttons have an accessible name
●Image elements have `[alt]` attributes
●Form elements have associated labels
●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
●ARIA attributes are used as specified for the element's role
●`[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
●Links are distinguishable without relying on color.
●Links have a discernible name
●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
●`<video>` elements contain a `<track>` element with `[kind="captions"]`
●Identical links have the same purpose.
○`[accesskey]` values are unique
○`button`, `link`, and `menuitem` elements have accessible names
○Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
○ARIA input fields have accessible names
○ARIA `meter` elements have accessible names
○ARIA `progressbar` elements have accessible names
○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
○Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
○List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
○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
○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.
100

Best Practices

●Uses HTTPS
●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
●Detected JavaScript libraries
●Page has valid source maps
○Redirects HTTP traffic to HTTPS
○Mitigate clickjacking with XFO or CSP
○Mitigate DOM-based XSS with Trusted Types
92

SEO

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

Content Best Practices

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

Link destinationLink Text
policies.google.com/technologies/cookies?hl=enLearn more
deepmind.google/models/gemma/gemma-4/Learn more
deepmind.google/models/gemini-image/flash/Learn more
deepmind.google/models/lyria/Learn more
deepmind.google/models/genie/Learn more
deepmind.google/models/gemini/Learn more
deepmind.google/science/weathernext/Learn more
deepmind.google/models/gemini-robotics/Learn more
deepmind.google/models/gemini/Learn more
deepmind.google/models/gemini-image/Learn more
deepmind.google/models/gemma/Learn more
deepmind.google/models/lyria/Learn more
deepmind.google/models/gemini-audio/Learn more
deepmind.google/models/veo/Learn more
blog.google/innovation-and-ai/technology/developers-tools/gemma-4/Learn more
/innovation-and-ai/models-and-research/gemini-models/gemi...Learn more
deepmind.google/blog/protecting-people-from-harmful-manipulation/Learn more
blog.google/innovation-and-ai/technology/ai/lyria-3-proLearn more
/innovation-and-ai/models-and-research/google-deepmind/me...Learn more
deepmind.google/blog/10-years-of-alphago/Learn more
/innovation-and-ai/models-and-research/gemini-models/gemi...Learn more
blog.google/innovation-and-ai/technology/ai/nano-banana-2Learn more
blog.google/innovation-and-ai/models-and-research/gemini-models/gemini-3-1-proLearn more
deepmind.google/the-podcast/Learn more

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

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

Lighthouse Scores

Industry-standard audits powered by Google Lighthouse. — Desktop

89
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
100
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
100
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
92
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

Core Web Vitals

Key metrics that affect user experience. — Desktop

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

975 ms

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

1.49 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

8 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.001

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

2.36 s

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

2.72 s

Detailed Report

Audit breakdown by category with detailed findings.

89

Performance

Insights

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

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

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

A long cache lifetime can speed up repeat visits to your page. Learn more about caching.

RequestCache TTLTransfer Size
/gdm-deepmind-com-prod-public/media/media/genie-3__homepa...3600.0 s1.4 MiB
/gdm-deepmind-com-prod-public/media/LLM77hTakO-MiMac/gemm...3600.0 s956.4 KiB
/gdm-deepmind-com-prod-public/media/media/lyria__homepage...3600.0 s443.6 KiB
/Wc4sbRH1vM-98O2trHMmAxBrxb3supfqqhPGDY0AbeywOowYM6iJTaHk...86400.0 s220.5 KiB
i.ytimg.com/vi/-pGs0btGmgY/maxresdefault.jpg7200.0 s88.7 KiB
i.ytimg.com/vi/l3u_FAv33G0/maxresdefault.jpg7200.0 s85.0 KiB
i.ytimg.com/vi_webp/qoinGjj60Fo/maxresdefault.webp7200.0 s58.9 KiB
i.ytimg.com/vi_webp/UALxgn1MnZo/maxresdefault.webp7200.0 s58.0 KiB
i.ytimg.com/vi_webp/PqVbypvxDto/maxresdefault.webp7200.0 s44.7 KiB
/wwoXL1ZQ49uevw1WrdSSxNssJp9PR91sX44_GOZ7xitt4s2CuhWdAVye...86400.0 s65.8 KiB
/gdm-deepmind-com-prod-public/media/media/lyria__homepage...3600.0 s28.7 KiB
/i1ooSWH5ku-ejhiZP8pZcsiLJkR_eF30Hc1EDVvXR5B0l-0Cel78dyKd...86400.0 s53.2 KiB
/i1ooSWH5ku-ejhiZP8pZcsiLJkR_eF30Hc1EDVvXR5B0l-0Cel78dyKd...86400.0 s49.6 KiB
/gdm-deepmind-com-prod-public/media/LLM77hTakO-MiMac/gemm...3600.0 s20.1 KiB
/KVYCjJ-L8ZrKP6nkzJPdqnEfhFyFHJ25d8a6jxkRQhox1SNuBGh3ADx3...86400.0 s27.6 KiB
/cXeSw7TkL3NkPhprLW2yiaezqIsOiNpKrQCTgwW9PMCso2YUOomNe_a6...86400.0 s24.2 KiB
/static/images/fallback/video_poster_fallback_light.57b61...600.0 s10.2 KiB
/gdm-deepmind-com-prod-public/media/media/genie-3__homepa...3600.0 s8.5 KiB
/sILaSdIzu5XraA6U7t26JH98KgsZNCG3T0nIjJ0wmrZu5VBv5fh6ruPm...86400.0 s15.7 KiB
/sILaSdIzu5XraA6U7t26JH98KgsZNCG3T0nIjJ0wmrZu5VBv5fh6ruPm...86400.0 s15.6 KiB
/MNlOW_zVZ4eTMzs4GySN6gbaCiN7WA4MVb_dc4F78apzf9pfnG8_Zyjr...86400.0 s11.9 KiB
/cIlYUjhk-74eKpKuNCK56S_DX-YHd9g6PalIanC02J5pKQI0QjgkPeJk...86400.0 s11.4 KiB
/static/images/fallback/video_poster_fallback_dark.4d55bc...600.0 s4.6 KiB
/M4-AtEMwP9km3ZnsoSnBhz7jrjJKVojMtCbz4ZdwDnKEBVtgCb0MvF3c...86400.0 s8.6 KiB
/ynuk8_WhOymp6Yk9fKHtJz1jMj-Dtgzw_OZ_moKhp5vUskxdFCKiPw2W...86400.0 s8.4 KiB
/diA8csnVScwyth1ocrgiwsj5cMpyCUdoCtoxwJz66DAIS6ZTzvT6bYHQ...86400.0 s6.9 KiB
/iqcya9tQ63ONBLbtfrXcAVcnAGclO6JL7tShy0BQxbmAMffIUT9ByMWp...86400.0 s6.9 KiB
/gdm-deepmind-com-prod-public/media/original_images/model...3600.0 s3.3 KiB
/gdm-deepmind-com-prod-public/media/original_images/gemma...3600.0 s3.2 KiB
/gdm-deepmind-com-prod-public/media/original_images/nav__...3600.0 s3.2 KiB
/gdm-deepmind-com-prod-public/media/images/footer_gemma__...3600.0 s3.1 KiB
/gdm-deepmind-com-prod-public/media/images/footer_gemma__...3600.0 s3.1 KiB
/ynuk8_WhOymp6Yk9fKHtJz1jMj-Dtgzw_OZ_moKhp5vUskxdFCKiPw2W...86400.0 s5.4 KiB
/gdm-deepmind-com-prod-public/media/original_images/nav__...3600.0 s2.6 KiB
/Wo_T3qi4nWB88hUYwcx-uN9x_RuKbUeruEWI_oVcbFcoLdPb1dO8coGk...86400.0 s4.3 KiB
/gdm-deepmind-com-prod-public/media/original_images/nav__...3600.0 s1.9 KiB
/gdm-deepmind-com-prod-public/media/original_images/nav__...3600.0 s1.5 KiB
/gdm-deepmind-com-prod-public/media/original_images/nav__...3600.0 s1.4 KiB
/gdm-deepmind-com-prod-public/media/original_images/nav__...3600.0 s1.3 KiB
/gdm-deepmind-com-prod-public/media/original_images/nav__...3600.0 s1.2 KiB
/gdm-deepmind-com-prod-public/media/original_images/nav__...3600.0 s1.2 KiB
/gdm-deepmind-com-prod-public/media/original_images/nav__...3600.0 s1.2 KiB
/gdm-deepmind-com-prod-public/media/original_images/nav__...3600.0 s1.2 KiB
/gdm-deepmind-com-prod-public/media/original_images/nav__...3600.0 s1.1 KiB
/gdm-deepmind-com-prod-public/media/original_images/nav__...3600.0 s1.1 KiB
/gdm-deepmind-com-prod-public/media/original_images/nav__...3600.0 s1.1 KiB
/gdm-deepmind-com-prod-public/media/original_images/nav__...3600.0 s1.1 KiB
/gdm-deepmind-com-prod-public/media/original_images/nav__...3600.0 s990 B
/gdm-deepmind-com-prod-public/media/original_images/nav__...3600.0 s949 B
/vqBFgK2g6eUQI10L2Hb8PH9kZVZTlmZeRjdvcjuJI8O4UkOhyQTI8Y9i...86400.0 s1.7 KiB
/gdm-deepmind-com-prod-public/media/original_images/nav__...3600.0 s859 B
static.doubleclick.net/instream/ad_status.js900.0 s494 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
/gdm-deepmind-com-prod-public/media/LLM77hTakO-MiMac/gemm...3600.0 s0 B
/gdm-deepmind-com-prod-public/media/media/lyria__homepage...3600.0 s0 B
/gdm-deepmind-com-prod-public/media/media/genie-3__homepa...3600.0 s0 B

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

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.

URLEst Savings
fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff235 ms
fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff230 ms

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.

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:13.973 source:map[column:33307 line:2 type:source-location url:https://deepmind.google/static/dist/site/site-abad8cda68861b08153b.js 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:15.027 source:map[column:215597 line:204 type:source-location url:https://deepmind.google/static/dist/site/site-abad8cda68861b08153b.js urlProvider:network]] map[reflowTime:0.278 source:map[column:196248 line:204 type:source-location url:https://deepmind.google/static/dist/site/site-abad8cda68861b08153b.js urlProvider:network]] map[reflowTime:0.243 source:map[column:192641 line:204 type:source-location url:https://deepmind.google/static/dist/site/site-abad8cda68861b08153b.js urlProvider:network]] map[reflowTime:1.928 source:map[column:7481 line:1 type:source-location url:https://deepmind.google/static/dist/site/site-abad8cda68861b08153b.js urlProvider:network]] map[reflowTime:0.733 source:map[column:34737 line:1 type:source-location url:https://deepmind.google/static/dist/site/site-abad8cda68861b08153b.js urlProvider:network]] map[reflowTime:0.282 source:map[column:83993 line:204 type:source-location url:https://deepmind.google/static/dist/site/site-abad8cda68861b08153b.js urlProvider:network]] map[reflowTime:0.794 source:map[column:231062 line:204 type:source-location url:https://deepmind.google/static/dist/site/site-abad8cda68861b08153b.js urlProvider:network]] map[reflowTime:11.528 source:map[column:84523 line:204 type:source-location url:https://deepmind.google/static/dist/site/site-abad8cda68861b08153b.js urlProvider:network]] map[reflowTime:0.687 source:map[column:259 line:135 type:source-location url:https://www.gstatic.com/glue/cookienotificationbar/cookienotificationbar.min.js urlProvider:network]] map[reflowTime:10.412 source:map[column:32801 line:1 type:source-location url:https://deepmind.google/static/dist/site/site-abad8cda68861b08153b.js urlProvider:network]] map[reflowTime:3.561 source:map[column:32842 line:1 type:source-location url:https://deepmind.google/static/dist/site/site-abad8cda68861b08153b.js urlProvider:network]] map[reflowTime:6.321 source:map[column:85504 line:204 type:source-location url:https://deepmind.google/static/dist/site/site-abad8cda68861b08153b.js urlProvider:network]] map[reflowTime:2.194 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

URLResource SizeEst Savings
figure.media-video-figure > div.media-video-container > div.video-wrapper > video.media-video figure.media-video-figure > div.media-video-container > div.video-wrapper > video.media-video
/Wc4sbRH1vM-98O2trHMmAxBrxb3supfqqhPGDY0AbeywOowYM6iJTaHk...220.3 KiB191.9 KiB
A dynamic, motion-blurred shot of a woman in a vibrant red traditional dress fe… div.block-image > div.media-image-block > picture.image > img.picture__image
/wwoXL1ZQ49uevw1WrdSSxNssJp9PR91sX44_GOZ7xitt4s2CuhWdAVye...65.7 KiB54.7 KiB
div.media-video-poster > div.media__container > picture.image > img.picture__image div.media-video-poster > div.media__container > picture.image > img.picture__image
/i1ooSWH5ku-ejhiZP8pZcsiLJkR_eF30Hc1EDVvXR5B0l-0Cel78dyKd...53.1 KiB36.9 KiB
figure.media-video-figure > div.media-video-container > div.video-wrapper > video.media-video figure.media-video-figure > div.media-video-container > div.video-wrapper > video.media-video
/i1ooSWH5ku-ejhiZP8pZcsiLJkR_eF30Hc1EDVvXR5B0l-0Cel78dyKd...49.5 KiB21.1 KiB
div.media-content-wrapper > div.media__container > picture.image > img.picture__image div.media-content-wrapper > div.media__container > picture.image > img.picture__image
/KVYCjJ-L8ZrKP6nkzJPdqnEfhFyFHJ25d8a6jxkRQhox1SNuBGh3ADx3...27.5 KiB19.6 KiB
div.media-content-wrapper > div.media__container > picture.image > img.picture__image div.media-content-wrapper > div.media__container > picture.image > img.picture__image
/cXeSw7TkL3NkPhprLW2yiaezqIsOiNpKrQCTgwW9PMCso2YUOomNe_a6...24.1 KiB19.0 KiB
div.media-video-poster > div.media__container > picture.image > img.picture__image div.media-video-poster > div.media__container > picture.image > img.picture__image
/sILaSdIzu5XraA6U7t26JH98KgsZNCG3T0nIjJ0wmrZu5VBv5fh6ruPm...15.6 KiB12.4 KiB

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

lhId: page-7-VIDEO
nodeLabel: figure.media-video-figure > div.media-video-container > div.video-wrapper > video.media-video
path: 1,HTML,1,BODY,4,MAIN,0,SECTION,0,DIV,0,DIV,0,SECTION,1,DIV,0,DIV,0,DIV,0,ARTICLE,0,DIV,0,DIV,0,FIGURE,0,DIV,0,DIV,1,VIDEO
selector: figure.media-video-figure > div.media-video-container > div.video-wrapper > video.media-video
snippet: <video class="media-video media-video--custom light-mode" autoplay="" data-has-alt-videos="true" loop="" muted="" playsinline="" poster="https://lh3.googleusercontent.com/sILaSdIzu5XraA6U7t26JH98KgsZNCG3T0nIjJ0w…" preload="metadata" data-media-video-init="1">

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.

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
value: No additional origins are good candidates for preconnecting

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

Redirects introduce additional delays before the page can be loaded. Learn how to avoid page redirects.

Estimated savings: 349 ms
URLTime Spent
www.deepmind.com/349 ms
deepmind.google/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.

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.

Estimated savings: 30 ms 67.0 KiB
URLTransfer SizeEst Savings
deepmind.google/static/dist/css/site.78ab7ee7ba32d1c91f6a.css85.2 KiB67.0 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.

Estimated savings: 70 ms 223.0 KiB
URLTransfer SizeEst Savings
deepmind.google/static/dist/site/site-abad8cda68861b08153b.js154.9 KiB85.0 KiB
www.googletagmanager.com/gtm.js?id=GTM-NRDHXJGK152.2 KiB77.2 KiB
www.googletagmanager.com/gtag/js?id=G-LS8HVHCNQ0&cx=c&gtm=4e6460146.6 KiB60.8 KiB

Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.

URLTransfer Size
/s/googlesymbols/v414/HhyqU5Ak9u-oMExPeInvcuEmPosC9zS3FYk...2.4 MiB
/gdm-deepmind-com-prod-public/media/media/genie-3__homepa...1.4 MiB
/gdm-deepmind-com-prod-public/media/LLM77hTakO-MiMac/gemm...956.4 KiB
/gdm-deepmind-com-prod-public/media/media/lyria__homepage...443.6 KiB
www.youtube.com/s/player/2430d1b0/player_embed_es6.vflset/en_US/base.js432.5 KiB
/gdm-deepmind-com-prod-public/media/media/genie-3__homepa...407.3 KiB
/Wc4sbRH1vM-98O2trHMmAxBrxb3supfqqhPGDY0AbeywOowYM6iJTaHk...220.5 KiB
/s/_/ytembeds/_/js/k=ytembeds.base.en_US.I-saIP3mOa8.2021...207.2 KiB
deepmind.google/static/dist/site/site-abad8cda68861b08153b.js155.0 KiB
www.googletagmanager.com/gtm.js?id=GTM-NRDHXJGK152.5 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
●Render blocking requests
●Optimize viewport for mobile
●Max Potential First Input Delay 70 ms
●Minify CSS
●Minify JavaScript
●User Timing marks and measures 5 user timings
●JavaScript execution time 0.5 s
●Minimizes main-thread work 1.8 s
●Avoid long main-thread tasks 1 long task found
●Image elements have explicit `width` and `height`
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 40 ms
●Server Backend Latencies 150 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 2 layout shifts found
○INP breakdown
○Avoid non-composited animations
100

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.

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.

Failing Elements
Google DeepMind DeepMind div.left-menu > div.site-switcher > div.site-switcher__bar > a.site-switcher__home
○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
●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
●`[role]` values are valid
●`[aria-*]` attributes have valid values
●`[aria-*]` attributes are valid and not misspelled
●Buttons have an accessible name
●Image elements have `[alt]` attributes
●Form elements have associated labels
●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
●ARIA attributes are used as specified for the element's role
●`[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
●Links are distinguishable without relying on color.
●Links have a discernible name
●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
●`<video>` elements contain a `<track>` element with `[kind="captions"]`
●Identical links have the same purpose.
○`[accesskey]` values are unique
○`button`, `link`, and `menuitem` elements have accessible names
○Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
○ARIA input fields have accessible names
○ARIA `meter` elements have accessible names
○ARIA `progressbar` elements have accessible names
○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
○Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
○List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
○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
○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.
100

Best Practices

●Uses HTTPS
●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
●Detected JavaScript libraries
●Page has valid source maps
○Redirects HTTP traffic to HTTPS
○Mitigate clickjacking with XFO or CSP
○Mitigate DOM-based XSS with Trusted Types
92

SEO

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

Content Best Practices

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

Link destinationLink Text
policies.google.com/technologies/cookies?hl=enLearn more
deepmind.google/models/gemma/gemma-4/Learn more
deepmind.google/models/gemini-image/flash/Learn more
deepmind.google/models/lyria/Learn more
deepmind.google/models/genie/Learn more
deepmind.google/models/gemini/Learn more
deepmind.google/science/weathernext/Learn more
deepmind.google/models/gemini-robotics/Learn more
deepmind.google/models/gemini/Learn more
deepmind.google/models/gemini-image/Learn more
deepmind.google/models/gemma/Learn more
deepmind.google/models/lyria/Learn more
deepmind.google/models/gemini-audio/Learn more
deepmind.google/models/veo/Learn more
blog.google/innovation-and-ai/technology/developers-tools/gemma-4/Learn more
/innovation-and-ai/models-and-research/gemini-models/gemi...Learn more
deepmind.google/blog/protecting-people-from-harmful-manipulation/Learn more
blog.google/innovation-and-ai/technology/ai/lyria-3-proLearn more
/innovation-and-ai/models-and-research/google-deepmind/me...Learn more
deepmind.google/blog/10-years-of-alphago/Learn more
/innovation-and-ai/models-and-research/gemini-models/gemi...Learn more
blog.google/innovation-and-ai/technology/ai/nano-banana-2Learn more
blog.google/innovation-and-ai/models-and-research/gemini-models/gemini-3-1-proLearn more
deepmind.google/the-podcast/Learn more

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

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

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