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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.

36

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 forced reflow occurs when JavaScript queries geometric properties (such as offsetWidth) after styles have been invalidated by a change to the DOM state. This can result in poor performance. Learn more about forced reflows and possible mitigations.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:source label:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:1.265 source:map[column:81257 line:7 type:source-location url:https://commercial.cdn.aws.placeit.net/_next/static/chunks/pages/_app-4dfba69dbae6553b.js urlProvider:network]]]
headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:73.148 source:map[column:32079 line:0 type:source-location url:https://commercial.cdn.aws.placeit.net/_next/static/chunks/1657-b3d717d40808163e.js urlProvider:network]] map[reflowTime:34.375 source:map[column:2019 line:0 type:source-location url:https://commercial.cdn.aws.placeit.net/_next/static/chunks/3376-14615552d8ebe02a.js urlProvider:network]] map[reflowTime:3.269 source:map[column:6403 line:0 type:source-location url:https://commercial.cdn.aws.placeit.net/_next/static/chunks/5175-b83a6444c997bfc6.js urlProvider:network]] map[reflowTime:23.259 source:map[column:81044 line:6 type:source-location url:https://commercial.cdn.aws.placeit.net/_next/static/chunks/pages/_app-4dfba69dbae6553b.js urlProvider:network]]]

Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLResource SizeEst Savings
A grid of design and mockup templates in purple and blue tones, available on Pl… div.plasmic_all__JDh1_ > div.PlasmicHeaderHomepageDefault_img___6YdqD___t0uC > picture.__wab_picture > img.__wab_img
/placeit-commercial/image/upload/plasmic/plasmic/placeit/...664.1 KiB647.2 KiB
Mockup of a Horizontal Postcard Inside a Decorated Easter Basket div.relative > div.group > span > img.object-cover
/uploads/stage/stage_image/201133/optimized_large_thumb_s...66.3 KiB59.2 KiB
Mugs & Drinkware div.plasmic_all__JDh1_ > a.w-[47%] > div.relative > img.w-full
/public/plasmic-videos/homepage-lists/Drinkware.jpg59.4 KiB54.2 KiB
Mockups for Etsy div.plasmic_all__JDh1_ > a.w-[47%] > div.relative > img.w-full
/public/plasmic-videos/homepage-lists/Etsy-spring.jpg53.4 KiB48.2 KiB
Apparel Brands div.plasmic_all__JDh1_ > a.w-[47%] > div.relative > img.w-full
/public/plasmic-videos/homepage-lists/Brands-spring.jpg52.2 KiB47.0 KiB
Spring div.plasmic_all__JDh1_ > a.w-[47%] > div.relative > img.w-full
/public/plasmic-videos/homepage-lists/Spring.jpg51.8 KiB46.6 KiB
T-Shirts div.plasmic_all__JDh1_ > a.w-[47%] > div.relative > img.w-full
/public/plasmic-videos/homepage-lists/T-shirts-spring.jpg51.6 KiB46.4 KiB
Tote Bag Mockup Featuring a Spring Picnic Day Setting div.relative > div.group > span > img.object-cover
/uploads/stage/stage_image/201147/optimized_large_thumb_s...50.0 KiB42.8 KiB
Mockup of an Open MacBook Close-Up on a Blue Chair with Studio Lights div.relative > div.group > span > img.object-cover
/uploads/stage/stage_image/201054/optimized_large_thumb_s...32.4 KiB25.9 KiB
Mockup of an iPad on an Aesthetic Beige Surface with Natural Light div.relative > div.group > span > img.object-cover
/uploads/stage/stage_image/201042/optimized_large_thumb_m...30.7 KiB25.3 KiB
Mockup of an iPad Resting on a Green Abstract Chair in a Dark Studio div.relative > div.group > span > img.object-cover
/uploads/stage/stage_image/201058/optimized_large_thumb_s...26.0 KiB22.0 KiB
Made for Socials div.plasmic_all__JDh1_ > a.w-[47%] > div.relative > img.w-full
/placeit-commercial/image/upload/q_auto/f_auto/v177628372...16.7 KiB13.8 KiB
Comfort Colors 1717 T-Shirt and 1566 Sweatshirt Mockup in a Colorful Top View S… div.relative > div.group > span > img.object-cover
/uploads/stage/stage_image/201118/optimized_large_thumb_1...16.9 KiB13.5 KiB
div.plasmic_placeit_all__iHKzr > div.plasmic_placeit_all__iHKzr > div.plasmic_placeit_all__iHKzr > video.__wab_instance div.plasmic_placeit_all__iHKzr > div.plasmic_placeit_all__iHKzr > div.plasmic_placeit_all__iHKzr > video.__wab_instance
/placeit-commercial/image/upload/f_avif/q_40/v1/plasmic/p...11.7 KiB6.1 KiB
div.plasmic_placeit_all__iHKzr > div.plasmic_placeit_all__iHKzr > div.plasmic_placeit_all__iHKzr > video.__wab_instance div.plasmic_placeit_all__iHKzr > div.plasmic_placeit_all__iHKzr > div.plasmic_placeit_all__iHKzr > video.__wab_instance
/placeit-commercial/image/upload/f_avif/q_40/v1/plasmic/p...11.4 KiB4.8 KiB

Each subpart has specific improvement strategies. Ideally, most of the LCP time should be spent on loading the resources, not within delays.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:label label:Subpart valueType:text] map[key:duration label:Duration valueType:ms]]
items: [map[duration:336.1299990234375 label:Time to first byte subpart:timeToFirstByte] map[duration:13.8000009765625 label:Resource load delay subpart:resourceLoadDelay] map[duration:75.88 label:Resource load duration subpart:resourceLoadDuration] map[duration:2089.89 label:Element render delay subpart:elementRenderDelay]]
lhId: page-0-IMG
nodeLabel: A grid of design and mockup templates in purple and blue tones, available on Pl…
path: 1,HTML,1,BODY,1,DIV,1,DIV,0,DIV,0,DIV,2,DIV,0,DIV,1,DIV,0,DIV,1,PICTURE,0,IMG
selector: div.plasmic_all__JDh1_ > div.PlasmicHeaderHomepageDefault_img___6YdqD___t0uC > picture.__wab_picture > img.__wab_img
snippet: <img alt="A grid of design and mockup templates in purple and blue tones, available …" fetchpriority="high" loading="eager" class="__wab_img" decoding="async" src="https://res.cloudinary.com/placeit-commercial/image/upload/plasmic/plasmic…" style="width:0;height:0">

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.

More than 4 preconnect connections were found. These should be used sparingly and only to the most important origins.
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

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.

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.

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.

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
Script Evaluation2.6 s
Style & Layout999 ms
Other705 ms
Script Parsing & Compilation457 ms
Parse HTML & CSS231 ms
Garbage Collection68 ms
Rendering41 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 reasonFailure type
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

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
Font display
LCP request discovery
Modern HTTP
Render blocking requests
Optimize viewport for mobile
Minify CSS
Minify JavaScript
User Timing marks and measures 4 user timings
Avoid long main-thread tasks 20 long tasks found
Image elements have explicit `width` and `height`
Network Requests
Network Round Trip Times 100 ms
Server Backend Latencies 300 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 290 ms
INP breakdown
Avoid non-composited animations
Avoid large layout shifts
80

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
Mockups Mockups Highlights All Holidays India-Inspired Mockups POD Brands Summ… nav#navbar > div.relative > div.flex > div.fixed
Mockups Highlights All Holidays India-Inspired Mockups POD Brands Summer Mocku… div.fixed > ul.relative > li.list-none > ul.absolute
Designs Highlights 4th of July Etsy Listings Free Templates Summer T-Shirts Gam… div.fixed > ul.relative > li.list-none > ul.absolute
Logos Highlights Gaming Logos Streetwear Logos Wedding Logos Architecture & Des… div.fixed > ul.relative > li.list-none > ul.absolute
Videos Highlights 3D Video Mockups Video Mockups Gaming Animated Logos Twitch S… div.fixed > ul.relative > li.list-none > ul.absolute
Gaming Highlights Gaming Logos YouTube Thumbnails Merch Gaming Mockups T-Shirt … div.fixed > ul.relative > li.list-none > ul.absolute
Learn Design Color Hub Color of the Year Gradients Combinations Logo Color Sche… div.fixed > ul.relative > li.list-none > ul.absolute
Free Account Login nav#navbar > div.relative > div.flex > div.fixed

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.

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
Go Unlimited! div.flex > a.relative > button.flex > p.flex
Start Creating! div.plasmic_all__JDh1_ > span.__wab_instance > div.plasmic_all__JDh1_ > a.flex
Show More div.plasmic_placeit_all__iHKzr > div.max-w-full > div.pt-14 > button.flex
Start Creating for Free div.plasmic_placeit_all__iHKzr > span.__wab_instance > a.plasmic_all__JDh1_ > span.plasmic_default__all
Check Out our Mockup Library div.plasmic_placeit_all__iHKzr > span.__wab_instance > a.plasmic_all__JDh1_ > span.plasmic_default__all
Make a Logo div.plasmic_placeit_all__iHKzr > span.__wab_instance > a.plasmic_all__JDh1_ > span.plasmic_default__all

These are opportunities to improve the legibility of your content.

Internationalization and localization

If a page doesn't specify a `lang` attribute, a screen reader assumes that the page is in the default language that the user chose when setting up the screen reader. If the page isn't actually in the default language, then the screen reader might not announce the page's text correctly. Learn more about the `lang` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
html html

These are opportunities to improve the interpretation of your content by users in different locales.

Names and labels

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.plasmic_placeit_all__iHKzr > div.plasmic_placeit_all__iHKzr > div.plasmic_placeit_all__iHKzr > a.plasmic_placeit_all__iHKzr div.plasmic_placeit_all__iHKzr > div.plasmic_placeit_all__iHKzr > div.plasmic_placeit_all__iHKzr > a.plasmic_placeit_all__iHKzr
div.plasmic_placeit_all__iHKzr > div.plasmic_placeit_all__iHKzr > div.plasmic_placeit_all__iHKzr > a.plasmic_placeit_all__iHKzr div.plasmic_placeit_all__iHKzr > div.plasmic_placeit_all__iHKzr > div.plasmic_placeit_all__iHKzr > a.plasmic_placeit_all__iHKzr
div.plasmic_placeit_all__iHKzr > div.plasmic_placeit_all__iHKzr > div.plasmic_placeit_all__iHKzr > a.plasmic_placeit_all__iHKzr div.plasmic_placeit_all__iHKzr > div.plasmic_placeit_all__iHKzr > div.plasmic_placeit_all__iHKzr > a.plasmic_placeit_all__iHKzr
div.plasmic_placeit_all__iHKzr > div.plasmic_placeit_all__iHKzr > div.plasmic_placeit_all__iHKzr > a.plasmic_placeit_all__iHKzr div.plasmic_placeit_all__iHKzr > div.plasmic_placeit_all__iHKzr > div.plasmic_placeit_all__iHKzr > a.plasmic_placeit_all__iHKzr
div.plasmic_placeit_all__iHKzr > div.plasmic_placeit_all__iHKzr > div.plasmic_placeit_all__iHKzr > a.plasmic_placeit_all__iHKzr div.plasmic_placeit_all__iHKzr > div.plasmic_placeit_all__iHKzr > div.plasmic_placeit_all__iHKzr > a.plasmic_placeit_all__iHKzr
div.plasmic_placeit_all__iHKzr > div.plasmic_placeit_all__iHKzr > div.plasmic_placeit_all__iHKzr > a.plasmic_placeit_all__iHKzr div.plasmic_placeit_all__iHKzr > div.plasmic_placeit_all__iHKzr > div.plasmic_placeit_all__iHKzr > a.plasmic_placeit_all__iHKzr

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.

Tables and lists

Screen readers require list items (`<li>`) to be contained within a parent `<ul>`, `<ol>` or `<menu>` to be announced properly. Learn more about proper list structure.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Mockups ul.relative > li.list-none > ul.absolute > li.sticky
Highlights All Holidays India-Inspired Mockups POD Brands Summer Mockups ul.relative > li.list-none > ul.absolute > li.h-auto
Apparel 3D Mockups Ai-Made Mockups All Apparel Face Masks Hats Hoodies Legging… ul.relative > li.list-none > ul.absolute > li.h-auto
Digital All Digital Android App Demos MacBooks iMacs iPad Mockups iPhone Mockups ul.relative > li.list-none > ul.absolute > li.h-auto
Print All Print Books Business Cards Candles Flyers Magazines Packaging Poster… ul.relative > li.list-none > ul.absolute > li.h-auto
Print On Demand All POD Bags Brands Coffee Mugs Drinkware Home Decor Phone Case… ul.relative > li.list-none > ul.absolute > li.h-auto
Promotional Banners Billboards Facebook Ads Mupis Signs ul.relative > li.list-none > ul.absolute > li.h-auto
Designs ul.relative > li.list-none > ul.absolute > li.sticky
Highlights 4th of July Etsy Listings Free Templates Summer T-Shirts ul.relative > li.list-none > ul.absolute > li.h-auto
Gaming Discord Themes Lower Third Banners Twitch Templates YouTube Templates ul.relative > li.list-none > ul.absolute > li.h-auto
Merch & Print Art Print Designs Blank Canvas Book Covers Business Cards Etsy Ba… ul.relative > li.list-none > ul.absolute > li.h-auto
Music & Podcasts Album Covers Concert Posters Music T-Shirts Podcast Covers ul.relative > li.list-none > ul.absolute > li.h-auto
Social Media All Social Media Banner Ads Facebook Covers Facebook Posts Fiverr … ul.relative > li.list-none > ul.absolute > li.h-auto
Logos ul.relative > li.list-none > ul.absolute > li.sticky
Highlights Gaming Logos Streetwear Logos Wedding Logos ul.relative > li.list-none > ul.absolute > li.h-auto
Architecture & Design Architects Designers Florist ul.relative > li.list-none > ul.absolute > li.h-auto
Clothing & Beauty Beauty Clothing Brands Jewelry Streetwear ul.relative > li.list-none > ul.absolute > li.h-auto
Education & Arts Daycare Education Photographers Writers / Publishers ul.relative > li.list-none > ul.absolute > li.h-auto
Finance & Legal Consulting Finance Law Firms Realtors ul.relative > li.list-none > ul.absolute > li.h-auto
Food & Events Bakeries Bars & Pubs Catering Coffee Shops Event Planners Restaur… ul.relative > li.list-none > ul.absolute > li.h-auto
Gaming All Gaming Logos Animated Logos Anime Emblem FPS Fantasy Horror MOBA Spa… ul.relative > li.list-none > ul.absolute > li.h-auto
Healthcare All Healthcare Logos Chiropractors Dentists Doctors Pharmacists Psyc… ul.relative > li.list-none > ul.absolute > li.h-auto
Lifestyle & Fitness Fitness Organic Products Wellness Yoga ul.relative > li.list-none > ul.absolute > li.h-auto
Music & Podcasts DJ Hip-Hop Music Logos Podcasts YouTubers ul.relative > li.list-none > ul.absolute > li.h-auto
Services All Service Logos Automotive Cleaning Services Contractors Landscapin… ul.relative > li.list-none > ul.absolute > li.h-auto
Shops Arts & Crafts Dropshipping Pet Shops Technology Travel Agencies ul.relative > li.list-none > ul.absolute > li.h-auto
Sports Logos All Sports Baseball Basketball Football Hockey Mascot Logos Soccer ul.relative > li.list-none > ul.absolute > li.h-auto
Style Abstract Cartoonish Illustration Monogram Retro Typography Vintage ul.relative > li.list-none > ul.absolute > li.h-auto
Videos ul.relative > li.list-none > ul.absolute > li.sticky
Highlights 3D Video Mockups Video Mockups ul.relative > li.list-none > ul.absolute > li.h-auto
Gaming Animated Logos Twitch Screens YouTube Videos ul.relative > li.list-none > ul.absolute > li.h-auto
Intros & Slideshows Express Videos Intros / Outros Slideshows ul.relative > li.list-none > ul.absolute > li.h-auto
Merch Videos 3D Videos Bella Canvas Coffee Mugs Hoodies Product Only Videos Swe… ul.relative > li.list-none > ul.absolute > li.h-auto
Social Media Facebook Covers Instagram Reels Instagram Videos Promo Videos Tik… ul.relative > li.list-none > ul.absolute > li.h-auto
Gaming ul.relative > li.list-none > ul.absolute > li.sticky
Highlights Gaming Logos YouTube Thumbnails ul.relative > li.list-none > ul.absolute > li.h-auto
Merch Gaming Mockups T-Shirt Designs ul.relative > li.list-none > ul.absolute > li.h-auto
Streaming Avatars OBS Stream Overlay Starting Soon Screens ul.relative > li.list-none > ul.absolute > li.h-auto
Twitch Templates All Twitch Templates Twitch Banners Twitch Emotes Twitch Offli… ul.relative > li.list-none > ul.absolute > li.h-auto
YouTube All YouTube Templates Intros / Outros YouTube Banners YouTube End Cards… ul.relative > li.list-none > ul.absolute > li.h-auto
Learn ul.relative > li.list-none > ul.absolute > li.sticky
Design Color Hub Color of the Year Gradients Combinations Logo Color Schemes ul.relative > li.list-none > ul.absolute > li.h-auto
Marketing How to Start a Business on Etsy Tutorial ul.relative > li.list-none > ul.absolute > li.h-auto
Placeit 101 FAQ How to Create a Mockup How to Design a Logo How to Make Videos … ul.relative > li.list-none > ul.absolute > li.h-auto
Tools Background Remover Blank Canvas Image Resizer Video Cropper Video to GIF … ul.relative > li.list-none > ul.absolute > li.h-auto

These are opportunities to improve the experience of reading tabular or list data using 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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Do not sell or share my personal information div.plasmic_placeit_all__iHKzr > div.plasmic_placeit_all__iHKzr > div.plasmic_placeit_all__iHKzr > a.plasmic_placeit_all__iHKzr
Do not sell or share my personal information div.plasmic_placeit_all__iHKzr > a.plasmic_placeit_all__iHKzr > div.plasmic_placeit_all__iHKzr > a.plasmic_placeit_all__iHKzr

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
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.
`button`, `link`, and `menuitem` elements have accessible names
ARIA attributes are used as specified for the element's role
Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
`[aria-hidden="true"]` elements do not contain focusable descendents
Elements use only permitted ARIA attributes
Document has a `<title>` element
Links are distinguishable without relying on color.
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
No element has a `[tabindex]` value greater than 0
`[lang]` attributes have a valid value
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"]`
Image elements do not have `[alt]` attributes that are redundant text.
Identical links have the same purpose.
`[accesskey]` values are unique
ARIA input fields have accessible names
ARIA `meter` elements have accessible names
ARIA `progressbar` elements have accessible names
`[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 a valid value for its `[lang]` attribute
`<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.
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.
Tables have different content in the summary attribute and `<caption>`.
All heading elements contain content.
Uses ARIA roles only on compatible elements
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.
96

Best Practices

General

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.

SourceDescription
[GSI_LOGGER]: FedCM get() rejects with NetworkError: Error retrieving a token.
Not signed in with the identity provider.
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 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`

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