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Results for https://www.gitpod.io

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Spain Spain · Madrid Completed: Apr 7, 2026 20:29 UTC

Mobile 375 × 812

Screenshot of the audited page (Mobile 375×812)

Desktop 1440 × 900

Screenshot of the audited page (Desktop 1440×900)
C79

Site Health

Score: 79 / 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

Page weighs 15.2 MB (13.0 MB transferred)

Performance › Page Weight Budget
2

1 control(s) without accessible label

Accessibility › Form Accessibility
3

2 button(s) with no accessible text

Accessibility › Link & Button Quality
4

No <main> landmark found

Accessibility › Landmark Structure
5

Cross-Origin-Embedder-Policy header is missing

Security › Security Headers
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Lighthouse Scores

Industry-standard audits powered by Google Lighthouse.

50
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
86
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
81
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
100
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.

2.08 s

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

11.04 s

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

1.06 s

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.

3.12 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.

11.29 s

Detailed Report

Audit breakdown by category with detailed findings.

50

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.

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.

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

lhId: page-0-IMG
nodeLabel: figure.relative > figure.w-full > div.w-full > img.object-cover
path: 1,HTML,1,BODY,5,DIV,1,SECTION,0,DIV,0,FIGURE,0,FIGURE,0,DIV,0,IMG
selector: figure.relative > figure.w-full > div.w-full > img.object-cover
snippet: <img alt="" loading="lazy" decoding="async" data-nimg="fill" class="object-cover absolute inset-0" style="position: absolute; height: 100%; width: 100%; inset: 0px;" sizes="100vw" srcset="/_next/image?url=%2Fimages%2Fcontent%2Fsanity%2Fbe9e51124e0f8ee6db80d47b3e…" src="https://ona.com/_next/image?url=%2Fimages%2Fcontent%2Fsanity%2Fbe9e51124e0…">

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.

description: [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints help the browser establish a connection earlier in the page load, saving time when the first request for that origin is made. The following are the origins that the page preconnected to.
title: Preconnected origins
description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.
title: Preconnect candidates

Requests are blocking the page's initial render, which may delay LCP. Deferring or inlining can move these network requests out of the critical path.

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

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
div.floating-announcement_pill__sYal_ > a.floating-announcement_pillLink__ZJHXu > span.floating-announcement_iconWrap__lhEGv > img.floating-announcement_iconImage__D3kX5 div.floating-announcement_pill__sYal_ > a.floating-announcement_pillLink__ZJHXu > span.floating-announcement_iconWrap__lhEGv > img.floating-announcement_iconImage__D3kX5
ona.com/images/banner-generic-image.webp8.8 KiB8.7 KiB

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

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.

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

Estimated savings: 847 ms
URLTime Spent
www.gitpod.io/847 ms
ona.com/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 JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.

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
Script Evaluation2.5 s
Other1.1 s
Style & Layout358 ms
Script Parsing & Compilation313 ms
Rendering155 ms
Garbage Collection60 ms
Parse HTML & CSS50 ms

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

Layout shift culprits
Optimize DOM size
Forced reflow
LCP breakdown
Modern HTTP
Optimize viewport for mobile
Minify CSS
Minify JavaScript
Reduce unused CSS
User Timing marks and measures 9 user timings
Avoid long main-thread tasks 15 long tasks found
Avoid non-composited animations 4 animated elements 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 120 ms
Tasks
Diagnostics
Metrics
Screenshot Thumbnails
Final Screenshot
Script Treemap Data
Resources Summary
Initial server response time was short Root document took 20 ms
INP breakdown
Avoid large layout shifts
86

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.

Failing Elements
Top 100 global company div.overflow-y-clip > section.container > div.bg-grey-450 > p.text-body-160
productivity increase section.container > div.grid > div.bg-grey-400 > p.text-body-110
of PRs co-authored by Ona section.container > div.grid > div.bg-grey-400 > p.text-body-110
Python repos modernized in 6 months section.container > div.grid > div.bg-grey-400 > p.text-body-110
Compliant, certified, and trusted by Fortune 500 companies. section.container > div.flex > h2.text-[1.125rem] > span.text-grey-700
The adversary can reason now, and our security tools weren't built for that. section.container > div.flex > a.flex > p.text-body-160
Background agents that write, test, and ship code on a schedule. Ona Automation… section.container > div.flex > a.flex > p.text-body-160
The companies winning with background agents didn't start with better models. T… section.container > div.flex > a.flex > p.text-body-160

These are opportunities to improve the legibility of your content.

Names and labels

Labels ensure that form controls are announced properly by assistive technologies, like screen readers. Learn more about form element labels.

Failing Elements
div.flex > div.flex > div.w-full > input.cursor-pointer div.flex > div.flex > div.w-full > input.cursor-pointer

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

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Failing Elements
1x div.text-white > div.flex > div.flex > button.flex
Unmute div.text-white > div.flex > div.flex > button.flex
Fullscreen div.text-white > div.flex > div.flex > button.flex
Automations div.col-span-1 > ul.text-[0.75rem] > li.flex > a.leading-[1]
Environments div.col-span-1 > ul.text-[0.75rem] > li.flex > a.leading-[1]
Governance div.col-span-1 > ul.text-[0.75rem] > li.flex > a.leading-[1]
Pricing div.col-span-1 > ul.text-[0.75rem] > li.flex > a.leading-[1]
AI code review div.col-span-1 > ul.text-[0.75rem] > li.flex > a.leading-[1]
Code migration div.col-span-1 > ul.text-[0.75rem] > li.flex > a.leading-[1]
CVE remediation div.col-span-1 > ul.text-[0.75rem] > li.flex > a.leading-[1]
Standardization div.col-span-1 > ul.text-[0.75rem] > li.flex > a.leading-[1]
Devin div.col-span-1 > ul.text-[0.75rem] > li.flex > a.leading-[1]
Codex div.col-span-1 > ul.text-[0.75rem] > li.flex > a.leading-[1]
Factory div.col-span-1 > ul.text-[0.75rem] > li.flex > a.leading-[1]
Blog div.col-span-1 > ul.text-[0.75rem] > li.flex > a.leading-[1]
Docs div.col-span-1 > ul.text-[0.75rem] > li.flex > a.leading-[1]
Changelog div.col-span-1 > ul.text-[0.75rem] > li.flex > a.leading-[1]
Events div.col-span-1 > ul.text-[0.75rem] > li.flex > a.leading-[1]
Newsletter div.col-span-1 > ul.text-[0.75rem] > li.flex > a.leading-[1]
Templates div.col-span-1 > ul.text-[0.75rem] > li.flex > a.leading-[1]
Videos div.col-span-1 > ul.text-[0.75rem] > li.flex > a.leading-[1]
Reports div.col-span-1 > ul.text-[0.75rem] > li.flex > a.leading-[1]
About div.col-span-1 > ul.text-[0.75rem] > li.flex > a.leading-[1]
Careers div.col-span-1 > ul.text-[0.75rem] > li.flex > a.leading-[1]
Media div.col-span-1 > ul.text-[0.75rem] > li.flex > a.leading-[1]
Contact div.col-span-1 > ul.text-[0.75rem] > li.flex > a.leading-[1]
Status div.col-span-3 > ul.text-[0.75rem] > li.flex > a.leading-[1]
Security div.col-span-3 > ul.text-[0.75rem] > li.flex > a.leading-[1]
Imprint div.col-span-3 > ul.text-[0.75rem] > li.flex > a.leading-[1]
Terms of service div.col-span-3 > ul.text-[0.75rem] > li.flex > a.leading-[1]
Terms of use div.col-span-3 > ul.text-[0.75rem] > li.flex > a.leading-[1]
Privacy policy div.col-span-3 > ul.text-[0.75rem] > li.flex > a.leading-[1]
Cookie policy div.col-span-3 > ul.text-[0.75rem] > li.flex > a.leading-[1]

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

Failing Elements
html.light html.light

These items highlight common accessibility best practices.

Interactive controls are keyboard focusable
Interactive elements indicate their purpose and state
The page has a logical tab order
Visual order on the page follows DOM order
User focus is not accidentally trapped in a region
The user's focus is directed to new content added to the page
HTML5 landmark elements are used to improve navigation
Offscreen content is hidden from assistive technology
Custom controls have associated labels
Custom controls have ARIA roles
`[aria-*]` attributes match their roles
`[aria-hidden="true"]` is not present on the document `<body>`
`[role]`s have all required `[aria-*]` attributes
`[role]` values are valid
`[aria-*]` attributes have valid values
`[aria-*]` attributes are valid and not misspelled
Buttons have an accessible name
Image elements have `[alt]` attributes
`[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
`<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
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
Heading elements appear in a sequentially-descending order
Deprecated ARIA roles were not used
`<video>` elements contain a `<track>` element with `[kind="captions"]`
Elements with visible text labels have matching accessible names.
`[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 an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
`[role]`s are contained by their required parent element
Elements with the `role=text` attribute do not have focusable descendents.
ARIA toggle fields have accessible names
ARIA `tooltip` elements have accessible names
ARIA `treeitem` elements have accessible names
The page contains a heading, skip link, or landmark region
`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
Definition list items are wrapped in `<dl>` elements
ARIA IDs are unique
No form fields have multiple labels
`<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
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
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.
81

Best Practices

General

Deprecated APIs will eventually be removed from the browser. Learn more about deprecated APIs.

Deprecation / WarningSource
AttributionReporting

Source maps translate minified code to the original source code. This helps developers debug in production. In addition, Lighthouse is able to provide further insights. Consider deploying source maps to take advantage of these benefits. Learn more about source maps.

Uses HTTPS
Avoids third-party cookies
Allows users to paste into input fields
Avoids requesting the geolocation permission on page load
Avoids requesting the notification permission on page load
Displays images with correct aspect ratio
Serves images with appropriate resolution
Page has the HTML doctype
Properly defines charset
No browser errors logged to the console
No issues in the `Issues` panel in Chrome Devtools
Ensure CSP is effective against XSS attacks
Use a strong HSTS policy
Ensure proper origin isolation with COOP
Mitigate clickjacking with XFO or CSP
Mitigate DOM-based XSS with Trusted Types
Redirects HTTP traffic to HTTPS
Detected JavaScript libraries
100

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.

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 have descriptive text
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

87
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
84
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
77
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
100
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.

701 ms

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

2.24 s

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

68 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.

1.38 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.

2.31 s

Detailed Report

Audit breakdown by category with detailed findings.

87

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.

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.

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

lhId: page-0-IMG
nodeLabel: figure.relative > figure.w-full > div.w-full > img.object-cover
path: 1,HTML,1,BODY,5,DIV,1,SECTION,0,DIV,0,FIGURE,0,FIGURE,0,DIV,0,IMG
selector: figure.relative > figure.w-full > div.w-full > img.object-cover
snippet: <img alt="" loading="lazy" decoding="async" data-nimg="fill" class="object-cover absolute inset-0" style="position: absolute; height: 100%; width: 100%; inset: 0px;" sizes="100vw" srcset="/_next/image?url=%2Fimages%2Fcontent%2Fsanity%2Fbe9e51124e0f8ee6db80d47b3e…" src="https://ona.com/_next/image?url=%2Fimages%2Fcontent%2Fsanity%2Fbe9e51124e0…">

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.

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.

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
div.floating-announcement_pill__sYal_ > a.floating-announcement_pillLink__ZJHXu > span.floating-announcement_iconWrap__lhEGv > img.floating-announcement_iconImage__D3kX5 div.floating-announcement_pill__sYal_ > a.floating-announcement_pillLink__ZJHXu > span.floating-announcement_iconWrap__lhEGv > img.floating-announcement_iconImage__D3kX5
ona.com/images/banner-generic-image.webp8.8 KiB8.8 KiB

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.

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: 309 ms
URLTime Spent
www.gitpod.io/309 ms
ona.com/0.0 ms

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.

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.

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

Time to Interactive 2.3 s
Layout shift culprits
Optimize DOM size
Forced reflow
LCP breakdown
Modern HTTP
Optimize viewport for mobile
Minify CSS
Minify JavaScript
Reduce unused CSS
User Timing marks and measures 11 user timings
JavaScript execution time 0.8 s
Minimizes main-thread work 1.6 s
Avoid long main-thread tasks 1 long task found
Avoid non-composited animations 3 animated elements found
Image elements have explicit `width` and `height`
Page didn't prevent back/forward cache restoration
Network Requests
Network Round Trip Times 100 ms
Server Backend Latencies 120 ms
Tasks
Diagnostics
Metrics
Screenshot Thumbnails
Final Screenshot
Script Treemap Data
Resources Summary
Initial server response time was short Root document took 20 ms
INP breakdown
Avoid large layout shifts
84

Accessibility

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

Names and labels

When a button doesn't have an accessible name, screen readers announce it as "button", making it unusable for users who rely on screen readers. Learn how to make buttons more accessible.

Failing Elements
figure.relative > figure.w-full > div.w-full > button.absolute figure.relative > figure.w-full > div.w-full > button.absolute

Labels ensure that form controls are announced properly by assistive technologies, like screen readers. Learn more about form element labels.

Failing Elements
div.flex > div.flex > div.w-full > input.cursor-pointer div.flex > div.flex > div.w-full > input.cursor-pointer

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.

Contrast

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

Failing Elements
Top 100 global company div.overflow-y-clip > section.container > div.bg-grey-450 > p.text-body-160
productivity increase section.container > div.grid > div.bg-grey-400 > p.text-body-110
of PRs co-authored by Ona section.container > div.grid > div.bg-grey-400 > p.text-body-110
Python repos modernized in 6 months section.container > div.grid > div.bg-grey-400 > p.text-body-110
Compliant, certified, and trusted by Fortune 500 companies. section.container > div.flex > h2.text-[1.125rem] > span.text-grey-700
The adversary can reason now, and our security tools weren't built for that. section.container > div.flex > a.flex > p.text-body-160
Background agents that write, test, and ship code on a schedule. Ona Automation… section.container > div.flex > a.flex > p.text-body-160
The companies winning with background agents didn't start with better models. T… section.container > div.flex > a.flex > p.text-body-160

These are opportunities to improve the legibility of your content.

Best practices

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

Failing Elements
html.light html.light

These items highlight common accessibility best practices.

Interactive controls are keyboard focusable
Interactive elements indicate their purpose and state
The page has a logical tab order
Visual order on the page follows DOM order
User focus is not accidentally trapped in a region
The user's focus is directed to new content added to the page
HTML5 landmark elements are used to improve navigation
Offscreen content is hidden from assistive technology
Custom controls have associated labels
Custom controls have ARIA roles
`[aria-*]` attributes match their roles
`[aria-hidden="true"]` is not present on the document `<body>`
`[role]`s have all required `[aria-*]` attributes
`[role]` values are valid
`[aria-*]` attributes have valid values
`[aria-*]` attributes are valid and not misspelled
Image elements have `[alt]` attributes
`[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
`<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
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
Deprecated ARIA roles were not used
`<video>` elements contain a `<track>` element with `[kind="captions"]`
`[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 an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
`[role]`s are contained by their required parent element
Elements with the `role=text` attribute do not have focusable descendents.
ARIA toggle fields have accessible names
ARIA `tooltip` elements have accessible names
ARIA `treeitem` elements have accessible names
The page contains a heading, skip link, or landmark region
`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
Definition list items are wrapped in `<dl>` elements
ARIA IDs are unique
No form fields have multiple labels
`<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
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
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.
Elements with visible text labels have matching accessible names.
Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.
`<td>` elements in a large `<table>` have one or more table headers.
77

Best Practices

General

Deprecated APIs will eventually be removed from the browser. Learn more about deprecated APIs.

Deprecation / WarningSource
AttributionReporting

Errors logged to the console indicate unresolved problems. They can come from network request failures and other browser concerns. Learn more about this errors in console diagnostic audit

SourceDescription
Failed to load resource: the server responded with a status of 404 ()

Source maps translate minified code to the original source code. This helps developers debug in production. In addition, Lighthouse is able to provide further insights. Consider deploying source maps to take advantage of these benefits. Learn more about source maps.

Uses HTTPS
Avoids third-party cookies
Allows users to paste into input fields
Avoids requesting the geolocation permission on page load
Avoids requesting the notification permission on page load
Displays images with correct aspect ratio
Serves images with appropriate resolution
Page has the HTML doctype
Properly defines charset
No 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
Redirects HTTP traffic to HTTPS
Detected JavaScript libraries
100

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.

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 have descriptive text
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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