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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.

82

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.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLEst Savings
fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff235 ms
fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff210 ms
fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff25.0 ms
fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff25.0 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-0-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">

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
/Wc4sbRH1vM-98O2trHMmAxBrxb3supfqqhPGDY0AbeywOowYM6iJTaHk...86400.0 s220.5 KiB
i.ytimg.com/vi/-pGs0btGmgY/sddefault.jpg7200.0 s36.9 KiB
i.ytimg.com/vi/l3u_FAv33G0/sddefault.jpg7200.0 s34.7 KiB
i.ytimg.com/vi_webp/UALxgn1MnZo/sddefault.webp7200.0 s27.4 KiB
/i1ooSWH5ku-ejhiZP8pZcsiLJkR_eF30Hc1EDVvXR5B0l-0Cel78dyKd...86400.0 s49.6 KiB
/dYD-i6FPRANVusjS-plnDlS7VytrArpqf-Y1STUmNL5Id4iLJbuCDzBK...86400.0 s47.6 KiB
i.ytimg.com/vi_webp/qoinGjj60Fo/sddefault.webp7200.0 s23.8 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 s20.6 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
/slKuvAfTzlk5ibUzM9JUkmcGPTVtw_A39xO2JIJmEFNC3xUWzCCN22Ht...86400.0 s15.6 KiB
/sILaSdIzu5XraA6U7t26JH98KgsZNCG3T0nIjJ0wmrZu5VBv5fh6ruPm...86400.0 s11.1 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
/gdm-deepmind-com-prod-public/media/images/footer_gemma__...3600.0 s3.2 KiB
/gdm-deepmind-com-prod-public/media/original_images/model...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/original_images/nav__...3600.0 s2.6 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 s993 B
/gdm-deepmind-com-prod-public/media/original_images/nav__...3600.0 s964 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 s848 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/LLM77hTakO-MiMac/gemm...3600.0 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

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
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 KiB21.0 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 KiB19.9 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...47.5 KiB18.7 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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

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: 300 ms 73.6 KiB
URLTransfer SizeEst Savings
deepmind.google/static/dist/css/site.61ee9975dd534f031093.css91.8 KiB73.6 KiB

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to minimize main-thread work

Why this matters

Performance issues directly impact user engagement and conversion rates.

CategoryTime Spent
Other1.3 s
Script Evaluation1.1 s
Style & Layout525 ms
Script Parsing & Compilation155 ms
Rendering151 ms
Parse HTML & CSS99 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 227.5 KiB
URLTransfer SizeEst Savings
deepmind.google/static/dist/site/site-f0ff50292cbc4752235d.js159.5 KiB89.6 KiB
www.googletagmanager.com/gtm.js?id=GTM-NRDHXJGK154.1 KiB76.6 KiB
www.googletagmanager.com/gtag/js?id=G-LS8HVHCNQ0&cx=c&gtm=4e64h1147.3 KiB61.3 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer Size
/s/googlesymbols/v419/HhyqU5Ak9u-oMExPeInvcuEmPosC9zS3FYk...2.4 MiB
/gdm-deepmind-com-prod-public/media/LLM77hTakO-MiMac/gemm...541.7 KiB
www.youtube.com/s/player/218d9d92/player_embed_es6.vflset/en_US/base.js435.8 KiB
/gdm-deepmind-com-prod-public/media/LLM77hTakO-MiMac/gemm...353.5 KiB
/Wc4sbRH1vM-98O2trHMmAxBrxb3supfqqhPGDY0AbeywOowYM6iJTaHk...220.5 KiB
/s/_/ytembeds/_/js/k=ytembeds.base.en_US.CYE28xQTWxU.2021...193.0 KiB
deepmind.google/static/dist/site/site-f0ff50292cbc4752235d.js159.6 KiB
www.googletagmanager.com/gtm.js?id=GTM-NRDHXJGK154.4 KiB
www.googletagmanager.com/gtag/js?id=G-LS8HVHCNQ0&cx=c&gtm=4e64h1147.4 KiB
/s/_/ytembeds/_/js/k=ytembeds.base.en_US.CYE28xQTWxU.2021...146.3 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
●Forced reflow
●LCP breakdown
●Modern HTTP
●Network dependency tree
●Render blocking requests
●Optimize viewport for mobile
●Minify CSS
●Minify JavaScript
●User Timing marks and measures 5 user timings
●JavaScript execution time 1.2 s
●Avoid long main-thread tasks 8 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 50 ms
●Server Backend Latencies 50 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 40 ms
●Avoid large layout shifts 2 layout shifts found
○INP breakdown
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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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.

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
●`[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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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/gemini-robotics-er-1-6/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
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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