Lighthouse Desktop

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

SCORE

GRADE

FIX

REVIEW

PASS

INFO

Detailed Report

Audit breakdown by category with detailed findings.

Performance

Insights

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile Baseline features, unless you know you must support older browsers. Learn why most sites can deploy ES6+ code without transpiling

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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.

URL	Est Savings
/s/instrumentsans/v4/pxicypc9vsFDm051Uf6KVwgkfoSbT2lBgGyg...	65 ms
fonts.gstatic.com/s/figtree/v9/_Xms-HUzqDCFdgfMm4S9DaRvzig.woff2	50 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-IMG

nodeLabel: div.grid > div.hero-demo > div.demo-frame-wrapper > img

path: 5,HTML,2,BODY,1,DIV,0,DIV,0,DIV,0,DIV,1,DIV,0,DIV,0,IMG

selector: div.grid > div.hero-demo > div.demo-frame-wrapper > img

snippet: <img src="/images/app-loading.webp">

Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.

Why this matters

Performance issues directly impact user engagement and conversion rates.

description: [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints help the browser establish a connection earlier in the page load, saving time when the first request for that origin is made. The following are the origins that the page preconnected to.

title: Preconnected origins

description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.

title: Preconnect candidates

value: No additional origins are good candidates for preconnecting

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.

URL	Transfer Size	Duration
cdn.jsdelivr.net/npm/@docsearch/css@3/dist/style.min.css	3.7 KiB	203 ms
/css2?family=Figtree:ital,wght@0,300..900;1,300..900&fami...	1020 B	281 ms
code.iconify.design/iconify-icon/2.1.0/iconify-icon.min.js	9.2 KiB	256 ms
www.home-assistant.io/stylesheets/screen.css?9a7328a851ae2e395f23b5ff3663f74c	25.2 KiB	233 ms
www.home-assistant.io/stylesheets/prism.css?1304e8e8c717584921b418a0a8dca04b	2.9 KiB	72 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Request	Cache TTL	Transfer Size
/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312...	86400.0 s	10.7 KiB
cdn.jsdelivr.net/npm/@docsearch/js@3/dist/umd/index.min.js	604800.0 s	35.7 KiB
code.iconify.design/iconify-icon/2.1.0/iconify-icon.min.js	172800.0 s	9.2 KiB
www.home-assistant.io/stylesheets/screen.css?9a7328a851ae2e395f23b5ff3663f74c	604800.0 s	25.2 KiB
www.home-assistant.io/javascripts/prism.js?5d6619066a1fc5cd819a93c132b539ac	604800.0 s	17.6 KiB
/cdn-cgi/scripts/5c5dd728/cloudflare-static/email-decode....	2875.0 s	1016 B
cdn.jsdelivr.net/npm/@docsearch/css@3/dist/style.min.css	604800.0 s	3.7 KiB
/javascripts/prism-doc-links.js?aecc2ca96596f960444d87dad...	604800.0 s	3.6 KiB
/javascripts/prism-template-links.js?7bedbf54ec266241edb8...	604800.0 s	3.1 KiB
www.home-assistant.io/stylesheets/prism.css?1304e8e8c717584921b418a0a8dca04b	604800.0 s	2.9 KiB
/javascripts/prism-jinja2.js?b7346561200c43c055e61149a77b...	604800.0 s	2.6 KiB
/javascripts/prism-signature.js?c46f2dc6f8d4fd987db580bda...	604800.0 s	1.4 KiB
/javascripts/terminology_tooltip.js?e20ec01246c34f18bd926...	604800.0 s	1.4 KiB

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.

	URL	Resource Size	Est Savings
Shop our merch store! Grab some swag while supporting the Open Home Foundation `div.frontpage > div.grid > div.grid__item > a.material-card`	www.home-assistant.io/images/frontpage/merch-store.webp	176.5 KiB	88.6 KiB
Home Assistant Connect ZBT-2 The easiest way to start with Zigbee or Thread is … `div.frontpage > div.grid > div.grid__item > a.material-card`	www.home-assistant.io/images/frontpage/zbt-2-frontpage.webp	125.8 KiB	37.9 KiB
Join us in Utrecht on April 8 for State of the Open Home 2026. `div.frontpage > div.grid > div.grid__item > a.material-card`	www.home-assistant.io/images/frontpage/sotoh-2026.webp	102.9 KiB	33.6 KiB
State of the Open Home 2025 Learn about our progress so far and also the roadma… `div.frontpage > div.grid > div.grid__item > a.material-card`	www.home-assistant.io/images/frontpage/feature-sotoh2025.jpg	59.5 KiB	18.8 KiB

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

Diagnostics

Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 40 ms 21.5 KiB

URL	Transfer Size	Est Savings
www.home-assistant.io/stylesheets/screen.css?9a7328a851ae2e395f23b5ff3663f74c	24.4 KiB	21.5 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 29.6 KiB

URL	Transfer Size	Est Savings
cdn.jsdelivr.net/npm/@docsearch/js@3/dist/umd/index.min.js	35.5 KiB	29.6 KiB

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
ArsTechnica.com logo `div.seen-press > a > div.material-card > img`	www.home-assistant.io/images/press/arstechnica.svg
Ct logo `div.seen-press > a > div.material-card > img`	www.home-assistant.io/images/press/ct.png
Nabu Casa logo `div.sponsored-by > div.material-card > a > img`	www.home-assistant.io/images/sponsors/nabu_casa.svg
Home Assistant `div.footer-nav > div.company > div.title > img`	www.home-assistant.io/images/footer-logo-text.svg
Tweakers.net logo `div.seen-press > a > div.material-card > img`	www.home-assistant.io/images/press/tweakers.png
OpenSource.com logo `div.seen-press > a > div.material-card > img`	www.home-assistant.io/images/press/opensource.com.svg
Linus Tech Tips logo `div.seen-press > a > div.material-card > img.square`	www.home-assistant.io/images/press/ltt.svg
Linux Magazine logo `div.seen-press > a > div.material-card > img`	www.home-assistant.io/images/press/LinuxMagazine.png
The Verge logo `div.seen-press > a > div.material-card > img`	www.home-assistant.io/images/press/theverge.svg
Troy Hunt logo `div.seen-press > a > div.material-card > img.square`	www.home-assistant.io/images/press/troyhunt.jpg
ProductHunt.com logo `div.seen-press > a > div.material-card > img`	www.home-assistant.io/images/press/producthunt.com.png
Linux.com logo `div.seen-press > a > div.material-card > img`	www.home-assistant.io/images/press/linux.com.png
Tom's Hardware logo `div.seen-press > a > div.material-card > img`	www.home-assistant.io/images/press/tomshardware.svg
Deploys by Netlify Badge `div.socials > div.web-notice > a > img`	www.home-assistant.io/images/frontpage/netlify.svg
GitHub logo `div.hero-socialproof > a > div.hero-github-top-project > img`	www.home-assistant.io/images/frontpage/hero-github-logo.svg
Top open source project trophy `div.hero-socialproof > a > div.hero-github-top-project > img`	www.home-assistant.io/images/frontpage/hero-trophy.svg

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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 411 ms

URL	Time Spent
home-assistant.io/	411 ms
www.home-assistant.io/	0.0 ms

●Time to Interactive 1.4 s

●Layout shift culprits

●Optimize DOM size

●Forced reflow

●LCP breakdown

●Modern HTTP

●Optimize viewport for mobile

●Max Potential First Input Delay 20 ms

●Minify CSS

●Minify JavaScript

●Avoids enormous network payloads Total size was 1,428 KiB

●JavaScript execution time 0.0 s

●Minimizes main-thread work 0.2 s

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 30 ms

●Server Backend Latencies 140 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Initial server response time was short Root document took 30 ms

●Avoid large layout shifts 4 layout shifts found

○INP breakdown

○User Timing marks and measures

○Avoid long main-thread tasks

○Avoid non-composited animations

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.

Contrast

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
2026.4.3 `div.grid-wrapper > div.grid > div.grid__item > a.release-date`
We are a non-profit and can't be sold or acquired. `div.grid__item > a.material-card > div > p.lead`
Home Assistant is a project by the Open Home Foundation. `div.grid__item > a.material-card > div > p`
Read our founder's vision for the perfect home automation `div.grid > div.grid__item > a.material-card > p.lead`
LEARN MORE `div.grid__item > div.join-community > div.links > a`
LEARN MORE `div.grid__item > div.join-community > div.links > a`
FORUMS `div.grid__item > div.join-community > div.links > a`
CHAT `div.grid__item > div.join-community > div.links > a`
NEWSLETTER `div.grid__item > div.join-community > div.links > a`
Works with over 1000 brands `div.grid__item > div.feature-cards > div.card > div.card-header`
EXPLORE INTEGRATIONS `div.feature-cards > div.card > div.card-content > a.button`
Powerful automations `div.grid__item > div.feature-cards > div.card > div.card-header`
EXPLORE AUTOMATIONS `div.feature-cards > div.card > div.card-content > a.button`
Versatile dashboards `div.grid__item > div.feature-cards > div.card > div.card-header`
EXPLORE DASHBOARDS `div.feature-cards > div.card > div.card-content > a.button`
Assist, our voice assistant `div.grid__item > div.feature-cards > div.card > div.card-header`
EXPLORE ASSIST `div.feature-cards > div.card > div.card-content > a.button`
Extend your system with apps `div.grid__item > div.feature-cards > div.card > div.card-header`
Explore apps for Home Assistant `div.feature-cards > div.card > div.card-content > a.button`
All your smart home data stays local `div.grid__item > div.feature-cards > div.card > div.card-header`
Companion Mobile Apps `div.grid__item > div.feature-cards > div.card > div.card-header`
DOWNLOAD APPS `div.feature-cards > div.card > div.card-content > a.button`
Home Energy Management `div.grid__item > div.feature-cards > div.card > div.card-header`
LEARN MORE `div.feature-cards > div.card > div.card-content > a.button`
Home Assistant Cast `div.grid__item > div.feature-cards > div.card > div.card-header`
LEARN MORE `div.feature-cards > div.card > div.card-content > a.button`
NFC Tags `div.grid__item > div.feature-cards > div.card > div.card-header`
LEARN MORE `div.feature-cards > div.card > div.card-content > a.button`
Open Home Foundation `div.footer-nav > div.company > p > a`
Nabu Casa `div.footer-nav > div.company > p > a`
GitHub repo `div.grid__item > ul > li > a.external-link`
Developers Portal `div.grid__item > ul > li > a.external-link`
Design Portal `div.grid__item > ul > li > a.external-link`
Data Science Portal `div.grid__item > ul > li > a.external-link`
Community Forum `div.grid__item > ul > li > a.external-link`
Creator Network `div.grid__item > ul > li > a.external-link`
Works With Home Assistant `div.grid__item > ul > li > a.external-link`
Our community `div.grid__item > ul > li > a`
Reporting issues `div.grid__item > ul > li > a`
Integration Alerts `div.grid__item > ul > li > a.external-link`
Security Alerts `div.grid__item > ul > li > a`
System Status `div.grid__item > ul > li > a.external-link`
iOS and Apple devices `div.grid__item > ul > li > a.external-link`
Android and Wear OS `div.grid__item > ul > li > a.external-link`
...and more! `div.grid__item > ul > li > a.external-link`
Merch store `div.grid__item > ul > li > a`
Home Assistant Cloud `div.grid__item > ul > li > a`
Privacy Notices `div.grid__item > ul > li > a`
Contributor License Agreement `div.grid__item > ul > li > a`
Terms of Service `div.grid__item > ul > li > a`
Code of Conduct `div.grid__item > ul > li > a`
Credits `div.grid__item > ul > li > a`
License `div.grid__item > ul > li > a`
Sign up for our newsletter `div.footer-nav > div.socials > p > a.external-link`
Works With Home Assistant `div.socials > div.web-notice > p > a`
email our team `div.socials > div.web-notice > p > a`
contact support `div.socials > div.web-notice > p > a`
Jekyll `div.socials > div.web-notice > p > a`
Oscailte theme `div.socials > div.web-notice > p > a`

These are opportunities to improve the legibility of your content.

Names and labels

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.grid > div.hero-demo > div.demo-frame-wrapper > img `div.grid > div.hero-demo > div.demo-frame-wrapper > img`

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.grid-wrapper > div.grid > div.grid__item > a.site-title `div.grid-wrapper > div.grid > div.grid__item > a.site-title`

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Best practices

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
html `html`

These items highlight common accessibility best practices.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Shop our merch store! Grab some swag while supporting the Open Home Foundation `div.frontpage > div.grid > div.grid__item > a.material-card`

○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>`

●`[aria-*]` attributes have valid values

●`[aria-*]` attributes are valid and not misspelled

●Buttons have an accessible name

●`[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

●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

●Touch targets have sufficient size and spacing.

●Heading elements appear in a sequentially-descending order

○`[accesskey]` values are unique

○`button`, `link`, and `menuitem` elements have accessible names

○Deprecated ARIA roles were not used

○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

○`[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

○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

○Form elements have associated labels

○The document does not use `<meta http-equiv="refresh">`

○`<object>` elements have alternate text

○Select elements have associated label elements.

○Skip links are focusable.

○No element has a `[tabindex]` value greater than 0

○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.

○`<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.

○Identical links have the same purpose.

○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

●Mitigate clickjacking with XFO or CSP

●Mitigate DOM-based XSS with Trusted Types

●Detected JavaScript libraries

●Page has valid source maps

○Redirects HTTP traffic to HTTPS

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 destination	Link Text
www.home-assistant.io/cloud/	LEARN MORE
www.home-assistant.io/cloud/	LEARN MORE
www.home-assistant.io/home-energy-management/	LEARN MORE
www.home-assistant.io/blog/2019/08/06/home-assistant-cast/	LEARN MORE
www.home-assistant.io/blog/2020/09/15/home-assistant-tags/	LEARN MORE

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.grid > div.hero-demo > div.demo-frame-wrapper > img `div.grid > div.hero-demo > div.demo-frame-wrapper > img`

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

○Structured data is valid

●Page isn’t blocked from indexing

●Document has a `<title>` element

●Document has a meta description

●Page has successful HTTP status code

●Links are crawlable

●robots.txt is valid

●Document has a valid `hreflang`

●Document has a valid `rel=canonical`