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Lighthouse Desktop

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

Audit breakdown by category with detailed findings.

96

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
/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 s1012.9 KiB
/gdm-deepmind-com-prod-public/media/media/lyria__homepage...3600.0 s509.2 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 s58.6 KiB
i.ytimg.com/vi_webp/UALxgn1MnZo/maxresdefault.webp7200.0 s58.0 KiB
i.ytimg.com/vi_webp/PqVbypvxDto/maxresdefault.webp7200.0 s45.0 KiB
/wwoXL1ZQ49uevw1WrdSSxNssJp9PR91sX44_GOZ7xitt4s2CuhWdAVye...86400.0 s65.8 KiB
/i1ooSWH5ku-ejhiZP8pZcsiLJkR_eF30Hc1EDVvXR5B0l-0Cel78dyKd...86400.0 s53.2 KiB
/i1ooSWH5ku-ejhiZP8pZcsiLJkR_eF30Hc1EDVvXR5B0l-0Cel78dyKd...86400.0 s49.7 KiB
/KVYCjJ-L8ZrKP6nkzJPdqnEfhFyFHJ25d8a6jxkRQhox1SNuBGh3ADx3...86400.0 s27.5 KiB
/cXeSw7TkL3NkPhprLW2yiaezqIsOiNpKrQCTgwW9PMCso2YUOomNe_a6...86400.0 s24.2 KiB
/static/images/fallback/video_poster_fallback_light.57b61...600.0 s10.2 KiB
/dYD-i6FPRANVusjS-plnDlS7VytrArpqf-Y1STUmNL5Id4iLJbuCDzBK...86400.0 s18.4 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
/cIlYUjhk-74eKpKuNCK56S_DX-YHd9g6PalIanC02J5pKQI0QjgkPeJk...86400.0 s11.4 KiB
/static/images/fallback/video_poster_fallback_dark.4d55bc...600.0 s4.6 KiB
/ynuk8_WhOymp6Yk9fKHtJz1jMj-Dtgzw_OZ_moKhp5vUskxdFCKiPw2W...86400.0 s8.4 KiB
/slKuvAfTzlk5ibUzM9JUkmcGPTVtw_A39xO2JIJmEFNC3xUWzCCN22Ht...86400.0 s7.0 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/images/footer_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
/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 s1.2 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 s1.2 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 s1006 B
/gdm-deepmind-com-prod-public/media/original_images/nav__...3600.0 s955 B
/vqBFgK2g6eUQI10L2Hb8PH9kZVZTlmZeRjdvcjuJI8O4UkOhyQTI8Y9i...86400.0 s1.7 KiB
/gdm-deepmind-com-prod-public/media/original_images/nav__...3600.0 s853 B
static.doubleclick.net/instream/ad_status.js900.0 s495 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/media/genie-3__homepa...3600.0 s0 B

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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:18.459 source:map[column:33307 line:2 type:source-location url:https://deepmind.google/static/dist/site/site-f0ff50292cbc4752235d.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:26.528 source:map[type:text value:[unattributed]]] map[reflowTime:0.392 source:map[column:197845 line:204 type:source-location url:https://deepmind.google/static/dist/site/site-f0ff50292cbc4752235d.js urlProvider:network]] map[reflowTime:0.267 source:map[column:194238 line:204 type:source-location url:https://deepmind.google/static/dist/site/site-f0ff50292cbc4752235d.js urlProvider:network]] map[reflowTime:1.764 source:map[column:7481 line:1 type:source-location url:https://deepmind.google/static/dist/site/site-f0ff50292cbc4752235d.js urlProvider:network]] map[reflowTime:0.59 source:map[column:34737 line:1 type:source-location url:https://deepmind.google/static/dist/site/site-f0ff50292cbc4752235d.js urlProvider:network]] map[reflowTime:0.346 source:map[column:83993 line:204 type:source-location url:https://deepmind.google/static/dist/site/site-f0ff50292cbc4752235d.js urlProvider:network]] map[reflowTime:15.977 source:map[column:246604 line:204 type:source-location url:https://deepmind.google/static/dist/site/site-f0ff50292cbc4752235d.js urlProvider:network]] map[reflowTime:11.224 source:map[column:84523 line:204 type:source-location url:https://deepmind.google/static/dist/site/site-f0ff50292cbc4752235d.js urlProvider:network]] map[reflowTime:15.897 source:map[column:32801 line:1 type:source-location url:https://deepmind.google/static/dist/site/site-f0ff50292cbc4752235d.js urlProvider:network]] map[reflowTime:2.562 source:map[column:32842 line:1 type:source-location url:https://deepmind.google/static/dist/site/site-f0ff50292cbc4752235d.js urlProvider:network]] map[reflowTime:0.372 source:map[column:259 line:135 type:source-location url:https://www.gstatic.com/glue/cookienotificationbar/cookienotificationbar.min.js urlProvider:network]] map[reflowTime:1.462 source:map[column:85921 line:204 type:source-location url:https://deepmind.google/static/dist/site/site-f0ff50292cbc4752235d.js urlProvider:network]] map[reflowTime:2.091 source:map[column:85504 line:204 type:source-location url:https://deepmind.google/static/dist/site/site-f0ff50292cbc4752235d.js 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
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__container > div.media-image-block > picture.image > img.picture__image div.media__container > div.media-image-block > picture.image > img.picture__image
/KVYCjJ-L8ZrKP6nkzJPdqnEfhFyFHJ25d8a6jxkRQhox1SNuBGh3ADx3...27.5 KiB19.6 KiB
div.media__container > div.media-image-block > picture.image > img.picture__image div.media__container > div.media-image-block > picture.image > img.picture__image
/cXeSw7TkL3NkPhprLW2yiaezqIsOiNpKrQCTgwW9PMCso2YUOomNe_a6...24.1 KiB19.0 KiB
div.media__container > div.media-image-block > picture.image > img.picture__image div.media__container > div.media-image-block > picture.image > img.picture__image
/dYD-i6FPRANVusjS-plnDlS7VytrArpqf-Y1STUmNL5Id4iLJbuCDzBK...18.3 KiB13.8 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

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-8-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">

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

Diagnostics

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.

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 71.2 KiB
URLTransfer SizeEst Savings
deepmind.google/static/dist/css/site.61ee9975dd534f031093.css91.8 KiB71.2 KiB

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

Layout shift culprits
Document request latency
Optimize DOM size
LCP breakdown
Modern HTTP
Network dependency tree
Render blocking requests
Optimize viewport for mobile
Time to Interactive 1.2 s
Max Potential First Input Delay 50 ms
Minify CSS
Minify JavaScript
User Timing marks and measures 5 user timings
JavaScript execution time 0.2 s
Minimizes main-thread work 0.8 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 50 ms
Server Backend Latencies 70 ms
Tasks
Diagnostics
Metrics
Screenshot Thumbnails
Final Screenshot
Script Treemap Data
Resources Summary
Avoid multiple page redirects
Initial server response time was short Root document took 30 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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

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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