Lighthouse Mobile

· 0 checks — Mobile 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.

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
cdn.cookielaw.org/scripttemplates/202404.1.0/otBannerSdk.js	86400.0 s	108.9 KiB
cdn.cookielaw.org/scripttemplates/otSDKStub.js	86400.0 s	9.1 KiB
www.gstatic.com/recaptcha/api2/logo_48.png	604800.0 s	2.3 KiB

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
fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2	45 ms
d35aaqx5ub95lt.cloudfront.net/vendor/68d22534874c554b0c9ebabea379fc60.woff2	30 ms
d35aaqx5ub95lt.cloudfront.net/vendor/f2331bbfd902cdf8971c4d3184a44283.woff2	5.0 ms
d35aaqx5ub95lt.cloudfront.net/vendor/3bbe299f41d8289a47d91773fee0cb6a.woff2	5.0 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-IMG

nodeLabel: div._15kfC > div._1ybpv > picture._1Bvko > img

path: 1,HTML,1,BODY,1,DIV,0,DIV,1,HEADER,1,DIV,0,DIV,0,PICTURE,2,IMG

selector: div._15kfC > div._1ybpv > picture._1Bvko > img

snippet: <img alt="" src="https://d35aaqx5ub95lt.cloudfront.net/images/splash/lottie/ded26f174e26ad1…">

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

value: no origins were preconnected

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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size	Duration
cdn.cookielaw.org/scripttemplates/otSDKStub.js	9.1 KiB	817 ms
d35aaqx5ub95lt.cloudfront.net/css/app-12b7bcea.css	16.3 KiB	301 ms
d35aaqx5ub95lt.cloudfront.net/css/6057-7317442d.css	10.4 KiB	763 ms

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
div._15kfC > div._1ybpv > picture._1Bvko > img `div._15kfC > div._1ybpv > picture._1Bvko > img`	/images/splash/lottie/ded26f174e26ad19d0a35cad7747c28c.png	89.9 KiB	52.4 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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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: 1.0 s

URL	Time Spent
duolingo.com/	1.0 s
www.duolingo.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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 2.2 s 789.8 KiB

URL	Transfer Size	Est Savings
d35aaqx5ub95lt.cloudfront.net/js/app-6c532e98.js	315.8 KiB	182.2 KiB
www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js	361.8 KiB	177.1 KiB
d35aaqx5ub95lt.cloudfront.net/js/6057-b2849109.js	237.0 KiB	138.2 KiB
www.googletagmanager.com/gtm.js?id=GTM-TX6Z97C	167.0 KiB	89.5 KiB
accounts.google.com/gsi/client	95.4 KiB	74.6 KiB
cdn.cookielaw.org/scripttemplates/202404.1.0/otBannerSdk.js	108.6 KiB	67.1 KiB
www.googletagmanager.com/gtag/js?id=AW-728842606&cx=c&gtm=4e64e1	137.2 KiB	61.1 KiB

Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to reduce Javascript execution time.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Total CPU Time	Script Evaluation	Script Parse
Unattributable	2.5 s	115 ms	0.0 ms
d35aaqx5ub95lt.cloudfront.net/js/app-6c532e98.js	1.9 s	1.6 s	91 ms
www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js	1.7 s	1.3 s	70 ms
d35aaqx5ub95lt.cloudfront.net/js/6057-b2849109.js	1.2 s	982 ms	58 ms
www.googletagmanager.com/gtag/js?id=AW-728842606&cx=c&gtm=4e64e1	308 ms	191 ms	32 ms
www.duolingo.com/	290 ms	4.9 ms	2.6 ms
www.googletagmanager.com/gtm.js?id=GTM-TX6Z97C	205 ms	163 ms	38 ms
cdn.cookielaw.org/scripttemplates/202404.1.0/otBannerSdk.js	134 ms	75 ms	34 ms
accounts.google.com/gsi/client	55 ms	36 ms	19 ms
d35aaqx5ub95lt.cloudfront.net/js/7459-a5fbe219.js	54 ms	50 ms	1.3 ms
cdn.cookielaw.org/scripttemplates/otSDKStub.js	53 ms	35 ms	3.1 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Category	Time Spent
Script Evaluation	4.9 s
Other	2.4 s
Style & Layout	700 ms
Script Parsing & Compilation	403 ms
Garbage Collection	340 ms
Rendering	118 ms
Parse HTML & CSS	37 ms

Many navigations are performed by going back to a previous page, or forwards again. The back/forward cache (bfcache) can speed up these return navigations. Learn more about the bfcache

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failure reason	Failure type
The page has an unload handler in the main frame.	Actionable
Pages with cache-control:no-store header cannot enter back/forward cache.	Actionable
Pages whose main resource has cache-control:no-store cannot enter back/forward cache.	Not actionable
Back/forward cache is disabled because some JavaScript network request received resource with Cache-Control: no-store header.	Not actionable

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 13.6 KiB

URL	Transfer Size	Est Savings
d35aaqx5ub95lt.cloudfront.net/css/app-12b7bcea.css	16.0 KiB	13.6 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.

URL	Transfer Size
www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js	362.3 KiB
www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js	361.9 KiB
d35aaqx5ub95lt.cloudfront.net/js/app-6c532e98.js	316.8 KiB
d35aaqx5ub95lt.cloudfront.net/js/6057-b2849109.js	237.5 KiB
/lottie/splash/82f26795696242931a7b905b4918eb1e.json	169.4 KiB
www.googletagmanager.com/gtm.js?id=GTM-TX6Z97C	167.4 KiB
/lottie/splash/e97b1cde32a58c629a0193eea36ddaab.json	137.5 KiB
www.googletagmanager.com/gtag/js?id=AW-728842606&cx=c&gtm=4e64e1	137.3 KiB
/images/splash/lottie/833a22b2834050d139f266a29899bb00.svg	121.7 KiB
cdn.cookielaw.org/scripttemplates/202404.1.0/otBannerSdk.js	108.9 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
div._15kfC > div._1ybpv > picture._1Bvko > img `div._15kfC > div._1ybpv > picture._1Bvko > img`	/images/splash/lottie/ded26f174e26ad19d0a35cad7747c28c.png

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

●Avoid long main-thread tasks 20 long tasks found

●Network Requests

●Network Round Trip Times 100 ms

●Server Backend Latencies 110 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Initial server response time was short Root document took 140 ms

○INP breakdown

○User Timing marks and measures

○Avoid non-composited animations

○Avoid large layout shifts

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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.qO_UG > div._3CwWq > div.zKVv4 > button._38iBE `div.qO_UG > div._3CwWq > div.zKVv4 > button._38iBE`

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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
free. fun. effective. `section.uU0-M > section._3k9io > div._2Yq-n > h2._3X-2C`
Learning with Duolingo is fun, and research shows that it works! With quick, bi… `section._3k9io > div._2Yq-n > p.KsAV5 > span`
research shows that it works `div._2Yq-n > p.KsAV5 > span > a._1F7oE`
backed by science `section.uU0-M > section._36L7f > div._2Yq-n > h2._3X-2C`
We use a combination of research-backed teaching methods and delightful content… `section.uU0-M > section._36L7f > div._2Yq-n > p.KsAV5`
stay motivated `section.uU0-M > section._3k9io > div._2Yq-n > h2._3X-2C`
We make it easy to form a habit of language learning with game-like features, f… `section.uU0-M > section._3k9io > div._2Yq-n > p.KsAV5`
personalized learning `section.uU0-M > section._36L7f > div._2Yq-n > h2._3X-2C`
Combining the best of AI and language science, lessons are tailored to help you… `section.uU0-M > section._36L7f > div._2Yq-n > p.KsAV5`
duolingo english test `div._2Yq-n > h2._3X-2C > span > span`
Our convenient, fast, and affordable English test integrates the latest assessm… `section._3dG3I > section._3k9io > div._2Yq-n > p.KsAV5`
duolingo for schools `section._3dG3I > section._36L7f > div._2Yq-n > h2._3X-2C`
Teachers, we’re here to help you! Our free tools support your students as they … `section._3dG3I > section._36L7f > div._2Yq-n > p.KsAV5`
duolingo abc `section._3dG3I > section._3k9io > div._2Yq-n > h2._3X-2C`
From language to literacy! With fun phonics lessons and delightful stories, Duo… `section._3dG3I > section._3k9io > div._2Yq-n > p.KsAV5`
learn a language with duolingo `section.F71XF > div._1fSpL > div._3qFL2 > h1._1FmL9`
About us `div.kWIKU > div._2zjY4 > div > div._30Vi6`
Courses `div > ul > li > a`
Mission `div > ul > li > a`
Approach `div > ul > li > a`
Efficacy `div > ul > li > a`
Duolingo Handbook `div > ul > li > a`
Research `div > ul > li > a`
Careers `div > ul > li > a`
Brand guidelines `div > ul > li > a`
Store `div > ul > li > a`
Press `div > ul > li > a`
Investors `div > ul > li > a`
Contact us `div > ul > li > a`
Products `div.kWIKU > div._2zjY4 > div > div._30Vi6`
Duolingo `div > ul > li > a`
Duolingo for Schools `div > ul > li > a`
Duolingo English Test `div > ul > li > a`
Podcast `div > ul > li > a`
Duolingo for Business `div > ul > li > a`
Super Duolingo `div > ul > li > a`
Gift Super Duolingo `div > ul > li > a`
Duolingo Max `div > ul > li > a`
Apps `div.kWIKU > div._2zjY4 > div > div._30Vi6`
Duolingo for Android `div > ul > li > a`
Duolingo for iOS `div > ul > li > a`
Help and support `div.kWIKU > div._2zjY4 > div > div._30Vi6`
Duolingo FAQs `div > ul > li > a`
Schools FAQs `div > ul > li > a`
Duolingo English Test FAQs `div > ul > li > a`
Status `div > ul > li > a`
Privacy and terms `div.kWIKU > div._2zjY4 > div > div._30Vi6`
Community guidelines `div > ul > li > a`
Terms `div > ul > li > a`
Privacy `div > ul > li > a`
Do Not Sell or Share My Personal Information `div > ul > li > a`
Social `div.kWIKU > div._2zjY4 > div > div._30Vi6`
Blog `div > ul > li > a`
Instagram `div > ul > li > a`
TikTok `div > ul > li > a`
Twitter `div > ul > li > a`
YouTube `div > ul > li > a`
LinkedIn `div > ul > li > a`
Site language: `div.qO_UG > footer._1nNuk > div.-Dahb > div._1LLyK`
العربية `div.-Dahb > ul._3PydS > li.yu122 > a.FXHbm`
বাংলা `div.-Dahb > ul._3PydS > li.yu122 > a.FXHbm`
Čeština `div.-Dahb > ul._3PydS > li.yu122 > a.FXHbm`
Deutsch `div.-Dahb > ul._3PydS > li.yu122 > a.FXHbm`
Ελληνικά `div.-Dahb > ul._3PydS > li.yu122 > a.FXHbm`
English `div.-Dahb > ul._3PydS > li.yu122 > a.FXHbm`
Español `div.-Dahb > ul._3PydS > li.yu122 > a.FXHbm`
Français `div.-Dahb > ul._3PydS > li.yu122 > a.FXHbm`
हिंदी `div.-Dahb > ul._3PydS > li.yu122 > a.FXHbm`
Magyar `div.-Dahb > ul._3PydS > li.yu122 > a.FXHbm`
Bahasa Indonesia `div.-Dahb > ul._3PydS > li.yu122 > a.FXHbm`
Italiano `div.-Dahb > ul._3PydS > li.yu122 > a.FXHbm`
日本語 `div.-Dahb > ul._3PydS > li.yu122 > a.FXHbm`
한국어 `div.-Dahb > ul._3PydS > li.yu122 > a.FXHbm`
Nederlands `div.-Dahb > ul._3PydS > li.yu122 > a.FXHbm`
Polski `div.-Dahb > ul._3PydS > li.yu122 > a.FXHbm`
Português `div.-Dahb > ul._3PydS > li.yu122 > a.FXHbm`
Română `div.-Dahb > ul._3PydS > li.yu122 > a.FXHbm`
Русский `div.-Dahb > ul._3PydS > li.yu122 > a.FXHbm`
svenska `div.-Dahb > ul._3PydS > li.yu122 > a.FXHbm`
தமிழ் `div.-Dahb > ul._3PydS > li.yu122 > a.FXHbm`
తెలుగు `div.-Dahb > ul._3PydS > li.yu122 > a.FXHbm`
ภาษาไทย `div.-Dahb > ul._3PydS > li.yu122 > a.FXHbm`
Tagalog `div.-Dahb > ul._3PydS > li.yu122 > a.FXHbm`
Türkçe `div.-Dahb > ul._3PydS > li.yu122 > a.FXHbm`
Українською `div.-Dahb > ul._3PydS > li.yu122 > a.FXHbm`
Tiếng Việt `div.-Dahb > ul._3PydS > li.yu122 > a.FXHbm`
中文 `div.-Dahb > ul._3PydS > li.yu122 > a.FXHbm`
4.5 `div._3CwWq > div.zKVv4 > div > span._2PsOB`
Cookie Policy `div#onetrust-group-container > div#onetrust-policy > div#onetrust-policy-text > a`
REJECT ALL `div.ot-sdk-row > div#onetrust-button-group-parent > div#onetrust-button-group > button#onetrust-reject-all-handler`
ACCEPT COOKIES `div.ot-sdk-row > div#onetrust-button-group-parent > div#onetrust-button-group > button#onetrust-accept-btn-handler`

These are opportunities to improve the legibility of your content.

Best practices

Disabling zooming is problematic for users with low vision who rely on screen magnification to properly see the contents of a web page. Learn more about the viewport meta tag.

Why this matters

Informational: a Permissions-Policy directive showing feature -> allowed origins.

Source: MDN Permissions-Policy

Failing Elements
head > meta `head > meta`

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
Cookie Policy `div#onetrust-group-container > div#onetrust-policy > div#onetrust-policy-text > a`

○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

●ARIA attributes are used as specified for the element's role

●Elements with `role="dialog"` or `role="alertdialog"` have accessible names.

●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

●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

○`[accesskey]` values are unique

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

○`[aria-hidden="true"]` elements do not contain focusable descendents

○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

○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.

○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.

Best Practices

General

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / Warning	Source
Unload event listeners are deprecated and will be removed.	d35aaqx5ub95lt.cloudfront.net/js/app-6c532e98.js line 1, col 321625

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Source	Description
zombie.duolingo.com/0/web.json?user=0&ts=1776295590&tzoffset=0	`Failed to load resource: the server responded with a status of 404 ()`
www.duolingo.com/users/undefined/streak-goal-current?_=1776295590963	`Failed to load resource: the server responded with a status of 404 ()`
www.duolingo.com/users/undefined/streak-goal-next-options?_=1776295590965	`Failed to load resource: the server responded with a status of 404 ()`
zombie.duolingo.com/0/web.json?user=0&ts=1776295625&tzoffset=0	`Failed to load resource: the server responded with a status of 404 ()`

●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 DOM-based XSS with Trusted Types

●Detected JavaScript libraries

●Page has valid source maps

○Redirects HTTP traffic to HTTPS

○Mitigate clickjacking with XFO or CSP

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`