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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.

45

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:27.421 source:map[column:30286 line:2 type:source-location url:https://www.iii.org/sites/all/modules/jquery_update/replace/jquery/1.12/jquery.min.js?v=1.12.4 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:21.097 source:map[column:31379 line:1 type:source-location url:https://www.iii.org/sites/all/modules/jquery_update/replace/jquery/1.12/jquery.min.js?v=1.12.4 urlProvider:network]] map[reflowTime:0.217 source:map[column:41 line:606 type:source-location url:https://www.iii.org/misc/drupal.js?t7dqau urlProvider:network]] map[reflowTime:2.552 source:map[column:27484 line:2 type:source-location url:https://www.iii.org/sites/all/modules/jquery_update/replace/jquery/1.12/jquery.min.js?v=1.12.4 urlProvider:network]] map[reflowTime:0.233 source:map[column:26389 line:2 type:source-location url:https://www.iii.org/sites/all/modules/jquery_update/replace/jquery/1.12/jquery.min.js?v=1.12.4 urlProvider:network]] map[reflowTime:0.145 source:map[column:26518 line:2 type:source-location url:https://www.iii.org/sites/all/modules/jquery_update/replace/jquery/1.12/jquery.min.js?v=1.12.4 urlProvider:network]] map[reflowTime:0.107 source:map[column:26828 line:2 type:source-location url:https://www.iii.org/sites/all/modules/jquery_update/replace/jquery/1.12/jquery.min.js?v=1.12.4 urlProvider:network]] map[reflowTime:0.105 source:map[column:26890 line:2 type:source-location url:https://www.iii.org/sites/all/modules/jquery_update/replace/jquery/1.12/jquery.min.js?v=1.12.4 urlProvider:network]] map[reflowTime:0.979 source:map[column:27147 line:2 type:source-location url:https://www.iii.org/sites/all/modules/jquery_update/replace/jquery/1.12/jquery.min.js?v=1.12.4 urlProvider:network]] map[reflowTime:0.199 source:map[column:27223 line:2 type:source-location url:https://www.iii.org/sites/all/modules/jquery_update/replace/jquery/1.12/jquery.min.js?v=1.12.4 urlProvider:network]] map[reflowTime:1.334 source:map[column:29573 line:2 type:source-location url:https://www.iii.org/sites/all/modules/jquery_update/replace/jquery/1.12/jquery.min.js?v=1.12.4 urlProvider:network]] map[reflowTime:0.302 source:map[column:27506 line:2 type:source-location url:https://www.iii.org/sites/all/modules/jquery_update/replace/jquery/1.12/jquery.min.js?v=1.12.4 urlProvider:network]] map[reflowTime:0.151 source:map[column:29559 line:2 type:source-location url:https://www.iii.org/sites/all/modules/jquery_update/replace/jquery/1.12/jquery.min.js?v=1.12.4 urlProvider:network]] map[reflowTime:0.31 source:map[type:text value:[unattributed]]] map[reflowTime:2.045 source:map[column:241855 line:18 type:source-location url:https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604160201/pubads_impl.js?cb=31097945 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
div.column > div.article > a > img div.column > div.article > a > img
www.iii.org/sites/default/files/p_auto_hail_94366343.jpg609.5 KiB598.2 KiB
div.column > div.article > a > img div.column > div.article > a > img
www.iii.org/sites/default/files/images/p_inland_marine_1539626696.jpg567.0 KiB555.8 KiB
div.hero > div.hero-column > div.story > div.bg div.hero > div.hero-column > div.story > div.bg
www.iii.org/sites/default/files/images/p_hurricane.jpg563.9 KiB487.1 KiB
div.column > div.article > a > img div.column > div.article > a > img
www.iii.org/sites/default/files/images/p_youngprofessionals_639467826.jpg410.5 KiB399.3 KiB
div.column > div.article > a > img div.column > div.article > a > img
www.iii.org/sites/default/files/images/p_triple_i_issues_briefs.jpg323.5 KiB312.5 KiB
div.column > div.article > a > img div.column > div.article > a > img
www.iii.org/sites/default/files/images/p_wildfires.jpg312.8 KiB301.6 KiB
div.column > div.article > a > img div.column > div.article > a > img
www.iii.org/sites/default/files/p_man_eating_driving_464869489.jpg297.7 KiB286.5 KiB
div.hero > div.hero-column > div.story > div.bg div.hero > div.hero-column > div.story > div.bg
www.iii.org/sites/default/files/images/p_convective_storm_1509633091.jpg313.6 KiB246.3 KiB
div.column > div.article > a > img div.column > div.article > a > img
/sites/default/files/images/p_2024_iii_billboard_legal_sy...242.2 KiB235.6 KiB
div.column > div.article > a > img div.column > div.article > a > img
www.iii.org/sites/default/files/images/p_search_681625520.jpg234.6 KiB223.4 KiB
div.hero > div.hero-column > div.story > div.bg div.hero > div.hero-column > div.story > div.bg
www.iii.org/sites/default/files/images/chart_of_the_week_04072026.jpg299.0 KiB220.0 KiB
div.hero > div.hero-column > div.story > div.bg div.hero > div.hero-column > div.story > div.bg
www.iii.org/sites/default/files/a_tornado.jpg186.0 KiB129.1 KiB
div.column > div.article > a > img div.column > div.article > a > img
www.iii.org/sites/default/files/images/p_economicsland.jpg100.0 KiB88.7 KiB
div.column > div.article > a > img div.column > div.article > a > img
www.iii.org/sites/default/files/images/p_daily_members.jpg97.1 KiB85.8 KiB
div.hero > div.hero-column > div.story > div.bg div.hero > div.hero-column > div.story > div.bg
www.iii.org/sites/default/files/images/p_espanol3_136206930.jpg99.3 KiB24.2 KiB
body.jar > div#google_image_div > a#aw0 > img.img_ad body.jar > div#google_image_div > a#aw0 > img.img_ad
tpc.googlesyndication.com/simgad/645720299236452108620.6 KiB18.0 KiB
body.jar > div#google_image_div > a#aw0 > img.img_ad body.jar > div#google_image_div > a#aw0 > img.img_ad
tpc.googlesyndication.com/simgad/86981511259784019557.1 KiB4.5 KiB

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-2-DIV
nodeLabel: div.hero > div.hero-column > div.story > div.bg
path: 1,HTML,1,BODY,7,DIV,0,DIV,1,DIV,0,DIV,1,DIV,0,DIV
selector: div.hero > div.hero-column > div.story > div.bg
snippet: <div class="bg" style="background-image: url('/sites/default/files/images/p_hurricane.jpg')">

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.

URLTransfer SizeDuration
securepubads.g.doubleclick.net/tag/js/gpt.js33.6 KiB1.8 s
/sites/all/themes/iii_responsive/js/jquery-ui-1.12.1.cust...155.0 KiB2.9 s
www.iii.org/sites/all/modules/google_analytics/googleanalytics.js?t7dqau2.4 KiB
/sites/all/modules/jquery_update/replace/jquery/1.12/jque...38.8 KiB900 ms
www.iii.org/sites/all/modules/nylon_editor_styles/nylon_editor_styles.js?t7dqau1.5 KiB150 ms
/pagead/managed/js/gpt/m202604160201/pubads_impl.js?cb=31...187.7 KiB4.2 s
www.iii.org/sites/all/modules/dhtml_menu/dhtml_menu.js?t7dqau4.3 KiB
www.iii.org/sites/all/modules/seckit/js/seckit.document_write.js488 B
/sites/all/modules/nylon_content_snapshot/nylon_content_s...563 B
www.iii.org/sites/all/modules/nylon_common_functions/nylon_widget.js?t7dqau910 B
www.iii.org/sites/all/libraries/tablesorter/jquery.tablesorter.min.js?t7dqau5.8 KiB150 ms
www.iii.org/sites/all/modules/nylon_members_news/nylon_members_news.js?t7dqau2.5 KiB
/sites/all/modules/nylon_form_overrides/nylon_form_overri...1.9 KiB
www.iii.org/sites/all/modules/colorbox/js/colorbox.js?t7dqau1.8 KiB
www.iii.org/sites/all/modules/colorbox/styles/default/colorbox_style.js?t7dqau661 B
www.iii.org/sites/all/modules/highlight/js/jquery.highlight.js?t7dqau1.8 KiB
www.iii.org/sites/all/modules/captcha/captcha.js?t7dqau924 B
www.iii.org/misc/jquery-html-prefilter-3.5.0-backport.js?v=1.12.45.2 KiB300 ms
www.iii.org/sites/all/themes/iii_responsive/js/scripts.js?t7dqau10.5 KiB150 ms
www.iii.org/sites/all/modules/jquery_update/js/jquery_browser.js?v=0.0.1561 B
www.iii.org/misc/drupal.js?t7dqau8.1 KiB150 ms
www.iii.org/misc/jquery.once.js?v=1.21.4 KiB
www.iii.org/sites/all/libraries/DOMPurify/purify.min.js?t7dqau9.2 KiB300 ms
/sites/default/files/css/css_s_Zq0IYKHu5vVO1yN1cU1_3lcCHt...2.9 KiB150 ms
/sites/all/modules/nylon_reusable_content/nylon_reusable_...485 B
www.iii.org/sites/all/libraries/colorbox/jquery.colorbox-min.js?t7dqau5.4 KiB150 ms
www.iii.org/sites/all/modules/nylon_site_search/nylon_site_search.js?t7dqau639 B
/sites/all/libraries/tablesorter/addons/pager/jquery.tabl...1.5 KiB
www.iii.org/sites/all/modules/iframe/iframe.js?t7dqau967 B150 ms
www.iii.org/sites/all/modules/entityreference/js/entityreference.js?t7dqau654 B
www.iii.org/sites/all/modules/tablesorter/tablesortervar.js?t7dqau714 B
www.iii.org/sites/all/libraries/tablesorter/jquery.metadata.js?t7dqau1.8 KiB150 ms
/sites/default/files/css/css_xE-rWrJf-fncB6ztZfd2huxqgxu4...2.8 KiB150 ms
www.iii.org/sites/all/modules/seckit/css/seckit.no_body.css438 B
www.iii.org/misc/jquery-extend-3.4.0.js?v=1.12.41.7 KiB
www.iii.org/misc/form-single-submit.js?v=7.1051.6 KiB
/sites/default/files/css/css_sIbkPhhNqYDDJs7qCDWNXqtiTleU...24.1 KiB600 ms
/sites/default/files/css/css_zeN4XZobzATw8CnCHAcWrXgCflRv...1.9 KiB
www.iii.org/sites/all/themes/iii_responsive/css/home.css3.0 KiB150 ms

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.

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

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: 752 ms
URLTime Spent
iii.org/752 ms
www.iii.org/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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Diagnostics

Minifying JavaScript files can reduce payload sizes and script parse time. Learn how to minify JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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: 150 ms 18.8 KiB
URLTransfer SizeEst Savings
/sites/default/files/css/css_sIbkPhhNqYDDJs7qCDWNXqtiTleU...23.8 KiB18.8 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.

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 Evaluation3.5 s
Other848 ms
Script Parsing & Compilation535 ms
Style & Layout262 ms
Garbage Collection162 ms
Parse HTML & CSS94 ms
Rendering30 ms

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.column > div.article > a > img div.column > div.article > a > img
www.iii.org/sites/default/files/images/p_triple_i_issues_briefs.jpg
div.column > div.article > a > img div.column > div.article > a > img
www.iii.org/sites/default/files/p_auto_hail_94366343.jpg
div.column > div.article > a > img div.column > div.article > a > img
www.iii.org/sites/default/files/p_man_eating_driving_464869489.jpg
div.column > div.article > a > img div.column > div.article > a > img
www.iii.org/sites/default/files/images/p_wildfires.jpg
div.column > div.article > a > img div.column > div.article > a > img
www.iii.org/sites/default/files/images/p_search_681625520.jpg
div.column > div.article > a > img div.column > div.article > a > img
www.iii.org/sites/default/files/images/p_youngprofessionals_639467826.jpg
div.column > div.article > a > img div.column > div.article > a > img
www.iii.org/sites/default/files/images/p_inland_marine_1539626696.jpg
div.column > div.article > a > img div.column > div.article > a > img
www.iii.org/sites/default/files/images/p_economicsland.jpg
div.column > div.article > a > img div.column > div.article > a > img
www.iii.org/sites/default/files/images/p_daily_members.jpg
div.column > div.article > a > img div.column > div.article > a > img
/sites/default/files/images/p_2024_iii_billboard_legal_sy...
div.grid-wrapper > div.grid > a > img div.grid-wrapper > div.grid > a > img
www.iii.org/sites/default/files/p_2022_ins_facts_tl.png
div.grid-wrapper > div.grid > a > img div.grid-wrapper > div.grid > a > img
www.iii.org/sites/default/files/triple-i_blog_368_x_217.png
div.grid-wrapper > div.grid > a > img div.grid-wrapper > div.grid > a > img
www.iii.org/sites/default/files/images/p_executive_exchange.png

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

Layout shift culprits
Optimize DOM size
LCP breakdown
Modern HTTP
Optimize viewport for mobile
Minify CSS
User Timing marks and measures 10 user timings
Avoid long main-thread tasks 20 long tasks found
Page didn't prevent back/forward cache restoration
Network Requests
Network Round Trip Times 60 ms
Server Backend Latencies 250 ms
Tasks
Diagnostics
Metrics
Screenshot Thumbnails
Final Screenshot
Script Treemap Data
Resources Summary
Initial server response time was short Root document took 160 ms
INP breakdown
Avoid non-composited animations
Avoid large layout shifts
78

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
LEARN MORE div.hero-column > div.story > div.content > a.btn
HOMEOWNERS div.column > div.article > div.content > a.tag
AUTO div.column > div.article > div.content > a.tag
CRIME + FRAUD div.column > div.article > div.content > a.tag
DISASTERS + PREPAREDNESS div.column > div.article > div.content > a.tag
LIFE INSURANCE div.column > div.article > div.content > a.tag
ABOUT THE INDUSTRY div.column > div.article > div.content > a.tag
ABOUT THE INDUSTRY div.column > div.article > div.content > a.tag
INSURANCE INDUSTRY div.column > div.article > div.content > a.tag
SEE FULL GLOSSARY div.grid-wrapper > div.grid > div#widget-glossary > a.btn
Most Shared div.grid > div#widget-stats > div.main-tabs-nav > a
SEE MORE NEWS RELEASES div.wrapper > div.grid > div.content > a.btn
SEE MORE EVENTS div.wrapper > div.grid > div.content > a.btn

These are opportunities to improve the legibility of your content.

Navigation

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
I.I.I. Glossary div.grid-wrapper > div.grid > div#widget-glossary > h3

These are opportunities to improve keyboard navigation in your application.

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.js html.js

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

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.column > div.article > a > img div.column > div.article > a > img
div.column > div.article > a > img div.column > div.article > a > img
div.column > div.article > a > img div.column > div.article > a > img
div.column > div.article > a > img div.column > div.article > a > img
div.column > div.article > a > img div.column > div.article > a > img
div.column > div.article > a > img div.column > div.article > a > img
div.column > div.article > a > img div.column > div.article > a > img
div.column > div.article > a > img div.column > div.article > a > img
div.column > div.article > a > img div.column > div.article > a > img
div.column > div.article > a > img div.column > div.article > a > img
div.grid-wrapper > div.grid > a > img div.grid-wrapper > div.grid > a > img
div.grid-wrapper > div.grid > a > img div.grid-wrapper > div.grid > a > img
div.grid-wrapper > div.grid > a > img div.grid-wrapper > div.grid > a > 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.wrapper > div.column > div.article > a div.wrapper > div.column > div.article > a
div.wrapper > div.column > div.article > a div.wrapper > div.column > div.article > a
div.wrapper > div.column > div.article > a div.wrapper > div.column > div.article > a
div.wrapper > div.column > div.article > a div.wrapper > div.column > div.article > a
div.wrapper > div.column > div.article > a div.wrapper > div.column > div.article > a
div.wrapper > div.column > div.article > a div.wrapper > div.column > div.article > a
div.wrapper > div.column > div.article > a div.wrapper > div.column > div.article > a
div.wrapper > div.column > div.article > a div.wrapper > div.column > div.article > a
div.wrapper > div.column > div.article > a div.wrapper > div.column > div.article > a
div.wrapper > div.column > div.article > a div.wrapper > div.column > div.article > a
div.grid > div#widget-smedia > div.main-tabs-nav > a.active div.grid > div#widget-smedia > div.main-tabs-nav > a.active
div.wrapper > div.grid-wrapper > div.grid > a div.wrapper > div.grid-wrapper > div.grid > a
div.wrapper > div.grid-wrapper > div.grid > a div.wrapper > div.grid-wrapper > div.grid > a
div.wrapper > div.grid-wrapper > div.grid > a div.wrapper > div.grid-wrapper > div.grid > a
div.wrapper-962 > div.grid-wrapper > div.grid-962 > a#logo-footer div.wrapper-962 > div.grid-wrapper > div.grid-962 > a#logo-footer
div.menu-smedia > ul > li.smedia_tw > a div.menu-smedia > ul > li.smedia_tw > a
div.menu-smedia > ul > li.smedia_linkedin > a div.menu-smedia > ul > li.smedia_linkedin > a
div.menu-smedia > ul > li.smedia_fb > a div.menu-smedia > ul > li.smedia_fb > a
div.menu-smedia > ul > li.smedia_youtube > a div.menu-smedia > ul > li.smedia_youtube > a

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.js html.js

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>`
`[aria-*]` attributes have valid values
`[aria-*]` attributes are valid and not misspelled
`[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
Elements use only permitted ARIA attributes
`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
Definition list items are wrapped in `<dl>` elements
Document has a `<title>` element
`<frame>` or `<iframe>` elements have a title
`<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
No element has a `[tabindex]` value greater than 0
Touch targets have sufficient size and spacing.
Identical links have the same purpose.
`[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-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
`[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
Buttons have an accessible name
The page contains a heading, skip link, or landmark region
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.
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.
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.
81

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 / 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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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 DOM-based XSS with Trusted Types
Detected JavaScript libraries
Redirects HTTP traffic to HTTPS
Mitigate clickjacking with XFO or CSP
69

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

Meta descriptions may be included in search results to concisely summarize page content. Learn more about the meta description.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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.

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.column > div.article > a > img div.column > div.article > a > img
div.column > div.article > a > img div.column > div.article > a > img
div.column > div.article > a > img div.column > div.article > a > img
div.column > div.article > a > img div.column > div.article > a > img
div.column > div.article > a > img div.column > div.article > a > img
div.column > div.article > a > img div.column > div.article > a > img
div.column > div.article > a > img div.column > div.article > a > img
div.column > div.article > a > img div.column > div.article > a > img
div.column > div.article > a > img div.column > div.article > a > img
div.column > div.article > a > img div.column > div.article > a > img
div.grid-wrapper > div.grid > a > img div.grid-wrapper > div.grid > a > img
div.grid-wrapper > div.grid > a > img div.grid-wrapper > div.grid > a > img
div.grid-wrapper > div.grid > a > img div.grid-wrapper > div.grid > a > img

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

Crawling and Indexing

Search engines may use `href` attributes on links to crawl websites. Ensure that the `href` attribute of anchor elements links to an appropriate destination, so more pages of the site can be discovered. Learn how to make links crawlable

Why this matters

Performance issues directly impact user engagement and conversion rates.

Uncrawlable Link
div.content > header#nav > div#navigation > a#menuBtn div.content > header#nav > div#navigation > a#menuBtn

To appear in search results, crawlers need access to your app.

Structured data is valid
Page isn’t blocked from indexing
Document has a `<title>` element
Page has successful HTTP status code
robots.txt is valid
Document has a valid `hreflang`
Document has a valid `rel=canonical`

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