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
transcend-cdn.com/cm/dc241cd4-6477-4f2b-86c0-6bcb51869e28/ui.js	60.0 s	98.4 KiB
connect.facebook.net/en_US/fbevents.js	1200.0 s	95.0 KiB
transcend-cdn.com/cm/dc241cd4-6477-4f2b-86c0-6bcb51869e28/airgap.js	60.0 s	55.0 KiB
lp.datadoghq.com/js/forms2/js/forms2.min.js	14400.0 s	67.5 KiB
/signals/config/2233705693599817?v=2.9.291&r=stable&domai...	1200.0 s	39.6 KiB
www.redditstatic.com/ads/pixel.js	60.0 s	19.0 KiB
d-code.liadm.com/did-006l.min.js	86400.0 s	45.9 KiB
www.google-analytics.com/analytics.js	7200.0 s	20.9 KiB
tag.demandbase.com/705a93ad66faead7.min.js	3600.0 s	18.4 KiB
tlzqr.datadoghq.com/load	1500.0 s	13.7 KiB
s.yimg.jp/images/listing/tool/cv/ytag.js	600.0 s	11.8 KiB
ml314.com/tag.aspx?732026	3600.0 s	12.7 KiB
a.quora.com/qevents.js	14400.0 s	14.7 KiB
nexus.ensighten.com/choozle/17899/Bootstrap.js	300.0 s	9.8 KiB
snap.licdn.com/li.lms-analytics/insight.min.js	86400.0 s	18.7 KiB
cdn.cr-relay.com/v1/site/a5d49f07-b6b8-4458-bfc0-d11e773eae89/signals.js	3600.0 s	7.2 KiB
transcend-cdn.com/cm/dc241cd4-6477-4f2b-86c0-6bcb51869e28/cm.css	60.0 s	4.0 KiB
www.influ2.com/tracker?clid=d0432e0c-03f7-481a-be93-582d8e11bede	0.0 ms	2.6 KiB
/index.php/form/getForm?munchkinId=875-UVY-685&form=2029&...	0.0 ms	2.5 KiB
lp.datadoghq.com/js/forms2/css/forms2.css	14400.0 s	2.7 KiB
munchkin.marketo.net/munchkin.js	0.0 ms	1.2 KiB
/p/vt/?clid=d0432e0c-03f7-481a-be93-582d8e11bede&dt=Cloud...	0.0 ms	823 B
cdn.zeroclick.ai/scripts/conversion.js	3600.0 s	981 B
lp.datadoghq.com/js/forms2/css/forms2-theme-shadow.css	14400.0 s	1.0 KiB
/collect?v=2&fmt=js&pid=74631&time=1775592168149&url=http...	0.0 ms	694 B
/rp.gif?ts=1775592168108&id=t2_naasd&event=PageVisit&m.it...	0.0 ms	637 B
cdn.zeroclick.ai/scripts/zc-global-min.js	3600.0 s	739 B
in.ml314.com/ud.ashx?topiclimit=&cb=732026&v=2.8.2.257	0.0 ms	482 B
partners.tremorhub.com/sync?UIDM=d031c100-bde4-4e12-aff3-2a017730f57e	0.0 ms	392 B
/_/ad/d45c4d6ee1c840da8f6a3212618f3e29/pixel?tag=ViewCont...	0.0 ms	273 B
insight.adsrvr.org/track/pxl/?adv=m5efvfi&ct=0:m4f44i8&fmt=3	0.0 ms	148 B
/tr/?id=2233705693599817&ev=PageView&dl=https%3A%2F%2Fwww...	0.0 ms	19 B
lp.datadoghq.com/js/forms2/js/forms2.min.js	14400.0 s	0 B

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
www.datadoghq.com/fonts/iconfont.woff2?11122a160a6ede4e25b35a906dfe790c	40 ms

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:29.215 source:map[column:31326 line:4 type:source-location url:https://lp.datadoghq.com/js/forms2/js/forms2.min.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:18.461 source:map[column:29268 line:6 type:source-location url:https://lp.datadoghq.com/js/forms2/js/forms2.min.js urlProvider:network]] map[reflowTime:22.566 source:map[column:29292 line:6 type:source-location url:https://lp.datadoghq.com/js/forms2/js/forms2.min.js urlProvider:network]] map[reflowTime:1.232 source:map[column:1099 line:7 type:source-location url:https://lp.datadoghq.com/js/forms2/js/forms2.min.js urlProvider:network]] map[reflowTime:26.245 source:map[column:9443 line:4 type:source-location url:https://lp.datadoghq.com/js/forms2/js/forms2.min.js urlProvider:network]] map[reflowTime:0.432 source:map[column:29061 line:5 type:source-location url:https://lp.datadoghq.com/js/forms2/js/forms2.min.js urlProvider:network]] map[reflowTime:0.233 source:map[column:30784 line:5 type:source-location url:https://lp.datadoghq.com/js/forms2/js/forms2.min.js urlProvider:network]] map[reflowTime:3.517 source:map[column:9465 line:4 type:source-location url:https://lp.datadoghq.com/js/forms2/js/forms2.min.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.

	URL	Resource Size	Est Savings
join our team `div.desktop:tw-col-span-6 > figure.mb-0 > picture > img.tw-w-full`	/img/home/careers_desktop.png?ch=Width%2cDPR%2cSave-Data&...	110.5 KiB	92.6 KiB
header.intro-header > div.tw-flex > div.section-video > video#datadog-video `header.intro-header > div.tw-flex > div.section-video > video#datadog-video`	/img/dd-homepage.jpg?w=1700&h=956&fit=crop&q=40&fm=png&au...	47.1 KiB	44.7 KiB
DASH 2025 `div.desktop:tw-col-span-6 > figure.mb-0 > picture > img.tw-w-full`	/img/home/post_dash_module_mobile_image.jpeg?ch=Width%2cD...	47.8 KiB	33.7 KiB
Infrastructure `figure.mb-0 > a > picture > img.tw-w-full`	/img/home-hostmap-static.png?ch=Width%2cDPR%2cSave-Data&f...	43.3 KiB	30.2 KiB
Datadog Logo `div.container > div.d-flex > a > img.bits-logo-mobile`	imgix.datadoghq.com/img/datadog_rbg_n_2x.png?fm=png&auto=format&lossless=1	6.7 KiB	5.7 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:377.6849990234375 label:Time to first byte subpart:timeToFirstByte] map[duration:13.3220009765625 label:Resource load delay subpart:resourceLoadDelay] map[duration:55.28 label:Resource load duration subpart:resourceLoadDuration] map[duration:2094.822 label:Element render delay subpart:elementRenderDelay]]

lhId: page-1-VIDEO

nodeLabel: header.intro-header > div.tw-flex > div.section-video > video#datadog-video

path: 1,HTML,1,BODY,2,HEADER,0,DIV,1,DIV,0,VIDEO

selector: header.intro-header > div.tw-flex > div.section-video > video#datadog-video

snippet: <video poster="https://imgix.datadoghq.com/img/dd-homepage.jpg?w=1700&h=956&fit=crop&q=40…" id="datadog-video" playsinline="" autoplay="" muted="" loop="" preload="auto" data-play="true">

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-1-VIDEO

nodeLabel: header.intro-header > div.tw-flex > div.section-video > video#datadog-video

path: 1,HTML,1,BODY,2,HEADER,0,DIV,1,DIV,0,VIDEO

selector: header.intro-header > div.tw-flex > div.section-video > video#datadog-video

snippet: <video poster="https://imgix.datadoghq.com/img/dd-homepage.jpg?w=1700&h=956&fit=crop&q=40…" id="datadog-video" playsinline="" autoplay="" muted="" loop="" preload="auto" data-play="true">

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

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
consent.trustarc.com/v2/autoblockasset/core.min.js?cmId=	0 B	780 ms
consent.trustarc.com/v2/autoblock?cmId=	0 B	780 ms
/static/dd-libs.cfc0fc7c8131c38b026e93f283148dccf754cd8d3...	77.7 KiB	366 ms
/styles/datadog-home.min.1d880d137264007fe3ccf9766b0fd90e...	98.5 KiB	1.3 s
/css/styles.min.a7473c1f594ec019b0009ab96b2f5474ec203c767...	65.1 KiB	183 ms
/assets/utm-handler.min.94d79fa3fc8f8c1ba1b075710e46a95a0...	2.7 KiB
cdn.zeroclick.ai/scripts/zc-global-min.js	739 B	802 ms
/styles/tw-iconfont.min.9c34576202e92e395c966b12961639773...	6.8 KiB	183 ms
/assets/dd-browser-logs-rum.min.21306b867b795939bcec583e5...	30.4 KiB	183 ms

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: 857 ms

URL	Time Spent
www.datadog.com/	857 ms
www.datadoghq.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.

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.

Estimated savings: 370 ms 156.0 KiB

URL	Transfer Size	Est Savings
/styles/datadog-home.min.1d880d137264007fe3ccf9766b0fd90e...	97.7 KiB	93.4 KiB
/css/styles.min.a7473c1f594ec019b0009ab96b2f5474ec203c767...	64.3 KiB	62.5 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 2.8 s 492.3 KiB

URL	Transfer Size	Est Savings
/assets/search-bar.min.44a96559baa6da2809e90007237d788004...	96.5 KiB	63.6 KiB
www.googletagmanager.com/gtm.js?id=GTM-WDC8G6	184.3 KiB	62.2 KiB
www.googletagmanager.com/gtag/js?id=G-KN80RDFSQK&cx=c&gtm=4e6460	173.7 KiB	61.9 KiB
www.googletagmanager.com/gtag/js?id=AW-827913433&cx=c&gtm=4e6460	145.7 KiB	60.5 KiB
lp.datadoghq.com/js/forms2/js/forms2.min.js	67.0 KiB	51.6 KiB
transcend-cdn.com/cm/dc241cd4-6477-4f2b-86c0-6bcb51869e28/ui.js	98.1 KiB	37.6 KiB
cdn.calibermind.com/a.js	58.6 KiB	36.4 KiB
lp.datadoghq.com/js/forms2/js/forms2.min.js	67.0 KiB	35.5 KiB
connect.facebook.net/en_US/fbevents.js	94.8 KiB	31.7 KiB
/static/dd-libs.cfc0fc7c8131c38b026e93f283148dccf754cd8d3...	77.0 KiB	30.4 KiB
d-code.liadm.com/did-006l.min.js	45.6 KiB	21.0 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
www.redditstatic.com/ads/pixel.js	3.9 s	3.7 s	8.1 ms
Unattributable	1.3 s	174 ms	0.0 ms
lp.datadoghq.com/js/forms2/js/forms2.min.js	615 ms	267 ms	31 ms
www.googletagmanager.com/gtm.js?id=GTM-WDC8G6	433 ms	352 ms	49 ms
www.googletagmanager.com/gtag/js?id=G-KN80RDFSQK&cx=c&gtm=4e6460	397 ms	341 ms	47 ms
www.datadoghq.com/	356 ms	92 ms	5.7 ms
www.googletagmanager.com/gtag/js?id=AW-827913433&cx=c&gtm=4e6460	223 ms	191 ms	31 ms
/assets/dd-browser-logs-rum.min.21306b867b795939bcec583e5...	213 ms	191 ms	7.1 ms
/static/dd-libs.cfc0fc7c8131c38b026e93f283148dccf754cd8d3...	210 ms	129 ms	16 ms
nexus.ensighten.com/choozle/17899/Bootstrap.js	196 ms	136 ms	3.4 ms
/assets/search-bar.min.44a96559baa6da2809e90007237d788004...	179 ms	79 ms	36 ms
transcend-cdn.com/cm/dc241cd4-6477-4f2b-86c0-6bcb51869e28/ui.js	171 ms	134 ms	29 ms
cdn.calibermind.com/a.js	120 ms	103 ms	16 ms
transcend-cdn.com/cm/dc241cd4-6477-4f2b-86c0-6bcb51869e28/airgap.js	107 ms	93 ms	10 ms
connect.facebook.net/en_US/fbevents.js	107 ms	82 ms	25 ms
/signals/config/2233705693599817?v=2.9.291&r=stable&domai...	105 ms	92 ms	12 ms
d-code.liadm.com/did-006l.min.js	83 ms	70 ms	12 ms
/assets/alpine.min.9fb7fca9511674131f4a90d5aa06dbaf0fd1b7...	72 ms	67 ms	3.7 ms
munchkin.marketo.net/164/munchkin.js	62 ms	56 ms	0.9 ms
tag.demandbase.com/705a93ad66faead7.min.js	58 ms	52 ms	4.2 ms
snap.licdn.com/li.lms-analytics/insight.min.js	50 ms	43 ms	5.6 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	6.9 s
Other	1.3 s
Style & Layout	472 ms
Script Parsing & Compilation	407 ms
Garbage Collection	229 ms
Parse HTML & CSS	155 ms
Rendering	31 ms

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.googletagmanager.com/gtm.js?id=GTM-WDC8G6	184.7 KiB
www.googletagmanager.com/gtag/js?id=G-KN80RDFSQK&cx=c&gtm=4e6460	173.8 KiB
imgix.datadoghq.com/img/dd_homepage_still_opt.png?w=1700&fm=png&h=956&fit=crop	151.9 KiB
www.googletagmanager.com/gtag/js?id=AW-827913433&cx=c&gtm=4e6460	145.8 KiB
/img/home/careers_desktop.png?ch=Width%2cDPR%2cSave-Data&...	110.8 KiB
/styles/datadog-home.min.1d880d137264007fe3ccf9766b0fd90e...	98.5 KiB
transcend-cdn.com/cm/dc241cd4-6477-4f2b-86c0-6bcb51869e28/ui.js	98.4 KiB
/assets/search-bar.min.44a96559baa6da2809e90007237d788004...	97.3 KiB
connect.facebook.net/en_US/fbevents.js	95.0 KiB
/static/dd-libs.cfc0fc7c8131c38b026e93f283148dccf754cd8d3...	77.7 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
join our team `div.desktop:tw-col-span-6 > figure.mb-0 > picture > img.tw-w-full`	/img/home/careers_desktop.png?ch=Width%2cDPR%2cSave-Data&...
Infrastructure `figure.mb-0 > a > picture > img.tw-w-full`	/img/home-hostmap-static.png?ch=Width%2cDPR%2cSave-Data&f...
div.tw-flex > div.desktop:tw-col-span-6 > picture.bg > img.w-100 `div.tw-flex > div.desktop:tw-col-span-6 > picture.bg > img.w-100`	/img/blog/state-of-devsecops/state-of-devsecops-2026/hero...
div.footer-menu > span.d-flex > a#transcend-footer-link > img `div.footer-menu > span.d-flex > a#transcend-footer-link > img`	imgix.datadoghq.com/img/icons/privacyoptions.svg?w=24&dpr=2
Log Management `figure.mb-0 > a > picture > img.tw-w-full`
APM `figure.mb-0 > a > picture > img.tw-w-full`
Security Monitoring `figure.mb-0 > a > picture > img.tw-w-full`
Network Monitoring `figure.mb-0 > a > picture > img.tw-w-full`
Synthetic Monitoring `figure.mb-0 > a > picture > img.tw-w-full`
Real User Monitoring `figure.mb-0 > a > picture > img.tw-w-full`
Serverless `figure.mb-0 > a > picture > img.tw-w-full`

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

●Layout shift culprits

●Optimize DOM size

●Modern HTTP

●Optimize viewport for mobile

●Minify CSS

●Minify JavaScript

●User Timing marks and measures 5 user timings

●Avoid long main-thread tasks 19 long tasks found

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 260 ms

●Server Backend Latencies 480 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Initial server response time was short Root document took 180 ms

○INP breakdown

○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.

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
2025 GARTNER® MAGIC QUADRANT™ `div.container > div.row > div.text-container > h5`

These are opportunities to improve keyboard navigation in your application.

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
REGISTER NOW `div.tw-flex > div.tw-relative > div.tw-relative > a.tw-flex`
LEARN MORE `div.container > div.row > div.text-container > a.rotating-banner-btn`
LEARN MORE `div.tw-flex > div.home-blog-bg > div.tw-container > a.tw-flex`
LEARN MORE `section > div.bg-gray-lightest > div.tw-container > a.tw-flex`

○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

●Background and foreground colors have a sufficient contrast ratio

●Document has a `<title>` element

●`<html>` element has a `[lang]` attribute

●`<html>` element has a valid value for its `[lang]` attribute

●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.

●Document has a main landmark.

●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

○Form elements have associated labels

○Links are distinguishable without relying on color.

○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

○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

User Experience

Image display dimensions should match natural aspect ratio. Learn more about image aspect ratio.

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Aspect Ratio (Displayed)	Aspect Ratio (Actual)
DASH Gradient Background `div.tw-absolute > figure.mb-0 > picture > img.tw-w-full`	/img/home/dash-gradient.jpg?ch=Width%2cDPR%2cSave-Data&fm...	412 x 823 (0.50)	850 x 547 (1.55)
Infrastructure `div.desktop:tw-absolute > figure.mb-0 > picture > img.tw-w-full`	/img/home-hostmap-static.png?ch=Width%2cDPR%2cSave-Data&f...	804 x 416 (1.93)	694 x 416 (1.67)
DataDog `div.d-none > div > a.js-logo-download > img.bits-logo-lg`	/img/dd_logo_n_70x75.png?ch=Width,DPR&fit=max&auto=format...	140 x 75 (1.87)	140 x 150 (0.93)
DataDog `div.d-none > div > a.js-logo-download > img.datadog-text-logo-lg`	/img/dd-logo-n-200.png?ch=Width,DPR&fit=max&auto=format&h...	187 x 14 (13.36)	187 x 28 (6.68)

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
AttributionReporting	snap.licdn.com/li.lms-analytics/insight.min.js

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
id.rlcdn.com/464526.gif	`Failed to load resource: the server responded with a status of 451 ()`
/static/dd-libs.cfc0fc7c8131c38b026e93f283148dccf754cd8d3...	`ZeroClick Error: No ZeroClick ID found`

●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

●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

●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

○Use a strong HSTS policy

○Mitigate clickjacking with XFO or CSP

SEO

These checks ensure that your page is following basic search engine optimization advice. There are many additional factors Lighthouse does not score here that may affect your search ranking, including performance on Core Web Vitals. Learn more about Google Search Essentials.

Content Best Practices

Descriptive link text helps search engines understand your content. Learn how to make links more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Link destination	Link Text
/resources/forrester-wave-aiops-2025/?utm_source=inbound&...	Learn More
/resources/gartner-magic-quadrant-observability-platforms...	LEARN MORE
/resources/gartner-magic-quadrant-digital-experience-moni...	Learn More
www.datadoghq.com/product/infrastructure-monitoring/	Learn more
www.datadoghq.com/state-of-devsecops/	LEARN MORE
careers.datadoghq.com/	LEARN MORE
www.datadoghq.com/events-webinars/	LEARN MORE

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

○Structured data is valid

●Page isn’t blocked from indexing

●Document has a `<title>` element

●Document has a meta description

●Page has successful HTTP status code

●Links are crawlable

●robots.txt is valid

●Image elements have `[alt]` attributes

●Document has a valid `hreflang`

●Document has a valid `rel=canonical`