Skip to content
https://datacenterdynamics.com

Lighthouse Desktop

· 0 checks — Desktop Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.
SCORE
0
GRADE
FIX
0
REVIEW
0
PASS
0
INFO
0

Detailed Report

Audit breakdown by category with detailed findings.

86

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.

Layout shifts occur when elements move absent any user interaction. Investigate the causes of layout shifts, such as elements being added, removed, or their fonts changing as the page loads.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:node label:Element subItemsHeading:map[key:extra] valueType:node] map[granularity:0.001 key:score label:Layout shift score subItemsHeading:map[key:cause valueType:text] valueType:numeric]]
items: [map[node:map[type:text value:Total] score:0.110414] map[node:map[boundingRect:map[bottom:2220 height:1997 left:975 right:1275 top:223 width:300] lhId:page-17-ASIDE nodeLabel:Whitepapers More Addressing constrained grids with onsite generation 20 Apr 20… path:1,HTML,1,BODY,7,MAIN,1,SECTION,1,ASIDE selector:body.template-homepage > main#main > section.layout--two-col > aside.layout__rhs snippet:<aside class="layout__rhs"> type:node] score:0.052391 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:3164 height:394 left:75 right:666 top:2769 width:591] lhId:page-21-IMG nodeLabel:DCD_Connect_SouthernEurope_Cityscape path:1,HTML,1,BODY,7,MAIN,3,SECTION,0,DIV,0,DIV,0,DIV,1,ARTICLE,1,A,0,IMG selector:div.live-events-listing-block > article.live-events-listing-card > a.live-events-listing-card__link > img.live-events-listing-card__image snippet:<img alt="DCD_Connect_SouthernEurope_Cityscape" class="live-events-listing-card__image" height="387" src="https://media.datacenterdynamics.com/media/images/2048_x_1536px_Landscape.…" width="580"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:2220 height:1997 left:975 right:1275 top:223 width:300] lhId:page-17-ASIDE nodeLabel:Whitepapers More Addressing constrained grids with onsite generation 20 Apr 20… path:1,HTML,1,BODY,7,MAIN,1,SECTION,1,ASIDE selector:body.template-homepage > main#main > section.layout--two-col > aside.layout__rhs snippet:<aside class="layout__rhs"> type:node] score:0.052391 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:3164 height:394 left:75 right:666 top:2769 width:591] lhId:page-21-IMG nodeLabel:DCD_Connect_SouthernEurope_Cityscape path:1,HTML,1,BODY,7,MAIN,3,SECTION,0,DIV,0,DIV,0,DIV,1,ARTICLE,1,A,0,IMG selector:div.live-events-listing-block > article.live-events-listing-card > a.live-events-listing-card__link > img.live-events-listing-card__image snippet:<img alt="DCD_Connect_SouthernEurope_Cityscape" class="live-events-listing-card__image" height="387" src="https://media.datacenterdynamics.com/media/images/2048_x_1536px_Landscape.…" width="580"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:884 height:142 left:75 right:955 top:742 width:880] lhId:page-7-DIV nodeLabel:Advertisement path:1,HTML,1,BODY,7,MAIN,1,SECTION,0,DIV,1,DIV selector:main#main > section.layout--two-col > div.layout__content > div.ad-unit snippet:<div class="ad-unit ad-unit--leaderboard" data-width="728" data-height="90"> type:node] score:0.005038 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:3164 height:394 left:75 right:666 top:2769 width:591] lhId:page-21-IMG nodeLabel:DCD_Connect_SouthernEurope_Cityscape path:1,HTML,1,BODY,7,MAIN,3,SECTION,0,DIV,0,DIV,0,DIV,1,ARTICLE,1,A,0,IMG selector:div.live-events-listing-block > article.live-events-listing-card > a.live-events-listing-card__link > img.live-events-listing-card__image snippet:<img alt="DCD_Connect_SouthernEurope_Cityscape" class="live-events-listing-card__image" height="387" src="https://media.datacenterdynamics.com/media/images/2048_x_1536px_Landscape.…" width="580"> type:node]] map[cause:Web font extra:map[type:url value:https://fonts.gstatic.com/s/plusjakartasans/v12/LDIoaomQNQcsA88c7O9yZ4KMCoOg4Ko20yygg_vb.woff2]] map[cause:Web font extra:map[type:url value:https://fonts.gstatic.com/s/plusjakartasans/v12/LDIuaomQNQcsA88c7O9yZ4KMCoOg4Koz4y6qhNnZR-A.woff2]]] type:subitems]] map[node:map[boundingRect:map[bottom:42 height:24 left:972 right:1059 top:18 width:87] lhId:page-12-BUTTON nodeLabel: Search path:1,HTML,1,BODY,6,HEADER,0,DIV,0,DIV,0,BUTTON selector:header#header > div.container > div.content > button.navigation-link snippet:<button class="navigation-link header-navigation__search js-dialog-trigger" data-target="search-panel" data-action="open"> type:node] score:0.000483 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:4501 height:150 left:157 right:273 top:4351 width:116] lhId:page-23-IMG nodeLabel:Screenshot 2026-03-31 150038 path:1,HTML,1,BODY,7,MAIN,5,SECTION,0,DIV,1,DIV,1,DIV,0,UL,0,LI,0,ARTICLE,1,DIV,1,IMG selector:li.column--third > article.card > div.card__image > img snippet:<img alt="Screenshot 2026-03-31 150038" height="150" itemprop="image" src="https://media.datacenterdynamics.com/media/images/Screenshot_2026-03-31_15…" width="116"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:42 height:24 left:972 right:1059 top:18 width:87] lhId:page-12-BUTTON nodeLabel: Search path:1,HTML,1,BODY,6,HEADER,0,DIV,0,DIV,0,BUTTON selector:header#header > div.container > div.content > button.navigation-link snippet:<button class="navigation-link header-navigation__search js-dialog-trigger" data-target="search-panel" data-action="open"> type:node] score:0.000111 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:718 height:150 left:1068 right:1183 top:568 width:115] lhId:page-22-IMG nodeLabel:ACF072~1_page-0001 path:1,HTML,1,BODY,7,MAIN,1,SECTION,1,ASIDE,1,DIV,1,DIV,0,UL,0,LI,0,ARTICLE,1,DIV,1,IMG selector:li.stack__primary > article.card > div.card__image > img snippet:<img alt="ACF072~1_page-0001" height="150" itemprop="image" src="https://media.datacenterdynamics.com/media/images/ACF0721_page-0001.height…" width="115"> type:node]]] type:subitems]]]

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.

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:10.832 source:map[column:23 line:3634 type:source-location url:https://www.datacenterdynamics.com/static/js/icons.16ba7411a2ee.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:23.959 source:map[type:text value:[unattributed]]] map[reflowTime:10.832 source:map[column:23 line:2881 type:source-location url:https://www.datacenterdynamics.com/static/js/icons.16ba7411a2ee.js urlProvider:network]] map[reflowTime:2.102 source:map[column:53 line:8655 type:source-location url:https://www.datacenterdynamics.com/static/js/frontend.e7dad703b8b6.js urlProvider:network]] map[reflowTime:0.457 source:map[column:23 line:205 type:source-location url:https://www.googletagmanager.com/gtm.js?id=GTM-MVZP594 urlProvider:network]] map[reflowTime:0.347 source:map[column:29268 line:6 type:source-location url:https://app-lon03.marketo.com/js/forms2/js/forms2.min.js urlProvider:network]] map[reflowTime:0.232 source:map[column:29292 line:6 type:source-location url:https://app-lon03.marketo.com/js/forms2/js/forms2.min.js urlProvider:network]] map[reflowTime:1.013 source:map[column:1099 line:7 type:source-location url:https://app-lon03.marketo.com/js/forms2/js/forms2.min.js urlProvider:network]] map[reflowTime:0.153 source:map[column:30312 line:2 type:source-location url:https://ml314.com/tag.aspx?2232026 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
XC26.London Web image 2026 div.live-events-listing-block > article.live-events-listing-card > a.live-events-listing-card__link > img.live-events-listing-card__image
/media/images/XC26.London_Web_image_2026.2e16d0ba.fill-58...43.9 KiB36.7 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/418984437410863019145.9 KiB33.7 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/442852714466137572245.4 KiB33.2 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/315606162422571280937.7 KiB27.0 KiB
TPU 8i rack div.column--two-thirds > article.card > a.nav-link > img
media.datacenterdynamics.com/media/images/TPU_8i_rack2.2e16d0ba.fill-580x387.jpg62.1 KiB25.6 KiB
2048 x 1536px Landscape.BR (2) div.live-events-listing-block > article.live-events-listing-card > a.live-events-listing-card__link > img.live-events-listing-card__image
/media/images/2048_x_1536px_Landscape.BR_2.2e16d0ba.fill-...21.3 KiB18.2 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/1627823866702575563724.2 KiB12.0 KiB
2048 x 1536px Landscape.BR (1) div.live-events-listing-block > article.live-events-listing-card > a.live-events-listing-card__link > img.live-events-listing-card__image
/media/images/2048_x_1536px_Landscape.BR_1.2e16d0ba.fill-...10.8 KiB7.4 KiB
ACF072~1_page-0001 div.column--two-thirds > article.card > div.card__image > img
media.datacenterdynamics.com/media/images/ACF0721_page-0001.height-300.jpg18.4 KiB7.2 KiB
DCD_Connect_AsiaPacific_Cityscape div.live-events-listing-block > article.live-events-listing-card > a.live-events-listing-card__link > img.live-events-listing-card__image
/media/images/DCD_Connect_AsiaPacific_Cityscape.2e16d0ba....8.2 KiB5.6 KiB
TAICS_Zaragoza (1) li.stack__primary > article.card > div.card__image > img
/media/images/TAICS_Zaragoza_1.2e16d0ba.fill-280x185.jpg12.8 KiB4.4 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-1-IMG
nodeLabel: TPU 8i rack
path: 1,HTML,1,BODY,7,MAIN,1,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,0,ARTICLE,1,A,0,IMG
selector: div.column--two-thirds > article.card > a.nav-link > img
snippet: <img alt="TPU 8i rack" height="387" src="https://media.datacenterdynamics.com/media/images/TPU_8i_rack2.2e16d0ba.fi…" width="580">

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
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
value: No additional origins are good candidates for preconnecting

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.

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.

RequestCache TTLTransfer Size
/pagead/managed/js/activeview/current/ufs_web_display.js3600.0 s73.1 KiB
app-lon03.marketo.com/js/forms2/js/forms2.min.js14400.0 s67.5 KiB
app-lon03.marketo.com/js/forms2/js/forms2.min.js14400.0 s67.4 KiB
ml314.com/tag.aspx?22320263600.0 s38.7 KiB
www.google-analytics.com/analytics.js7200.0 s20.9 KiB
/cdn-cgi/challenge-platform/h/b/scripts/jsd/0b8fb825cb67/...14400.0 s12.9 KiB
snap.licdn.com/li.lms-analytics/insight.min.js57834.0 s18.7 KiB
/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312...86400.0 s10.7 KiB
/index.php/form/getForm?munchkinId=665-KXY-697&form=2181&...0.0 ms4.3 KiB
static.oktopost.com/oktrk.js0.0 ms3.7 KiB
/beacon.min.js/vcd15cbe7772f49c399c6a5babf22c124171768917...86400.0 s6.9 KiB
extend.vimeocdn.com/ga/91726100.js86400.0 s5.8 KiB
s.adroll.com/i/favicon/nextroll-32x32.png0.0 ms2.3 KiB
app-lon03.marketo.com/js/forms2/css/forms2.css14400.0 s2.9 KiB
munchkin.marketo.net/munchkin.js0.0 ms1.2 KiB
static.addtoany.com/menu/page.js86400.0 s2.2 KiB
pagead2.googlesyndication.com/pagead/js/r20260422/r20110914/abg_lite_fy2021.js1209600.0 s8.4 KiB
/cdn-cgi/scripts/5c5dd728/cloudflare-static/email-decode....2867.0 s1016 B
s.adroll.com/j/pre/index.js0.0 ms733 B
/collect?v=2&fmt=js&pid=7169642&time=1776900501720&url=ht...0.0 ms693 B
/consent/check/N7EHSCRPI5BI7EAVKEQAXU?pv=32070321292.6337...0.0 ms647 B
in.ml314.com/ud.ashx?topiclimit=&cb=2232026&v=2.8.2.2570.0 ms482 B
app-lon03.marketo.com/js/forms2/css/forms2-theme-simple.css14400.0 s578 B
/pagead/js/r20260422/r20110914/client/window_focus_fy2021.js1209600.0 s1.2 KiB
ok.datacenterdynamics.com/ping?uri=%2Fen%2F&aid=001jeguloc1o921&ts=17769005017100.0 ms100 B
/pagead/managed/js/activeview/current/ufs_web_display.js3600.0 s0 B
/pagead/managed/js/activeview/current/ufs_web_display.js3600.0 s0 B
/pagead/managed/js/activeview/current/ufs_web_display.js3600.0 s0 B
/pagead/managed/js/activeview/current/ufs_web_display.js3600.0 s0 B
pagead2.googlesyndication.com/pagead/js/r20260422/r20110914/abg_lite_fy2021.js1209600.0 s0 B
pagead2.googlesyndication.com/pagead/js/r20260422/r20110914/abg_lite_fy2021.js1209600.0 s0 B
pagead2.googlesyndication.com/pagead/js/r20260422/r20110914/abg_lite_fy2021.js1209600.0 s0 B
pagead2.googlesyndication.com/pagead/js/r20260422/r20110914/abg_lite_fy2021.js1209600.0 s0 B
/pagead/js/r20260422/r20110914/client/window_focus_fy2021.js1209600.0 s0 B
/pagead/js/r20260422/r20110914/client/window_focus_fy2021.js1209600.0 s0 B
/pagead/js/r20260422/r20110914/client/window_focus_fy2021.js1209600.0 s0 B
/pagead/js/r20260422/r20110914/client/window_focus_fy2021.js1209600.0 s0 B

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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 540 ms

These are the largest layout shifts observed on the page. Each table item represents a single layout shift, and shows the element that shifted the most. Below each item are possible root causes that led to the layout shift. Some of these layout shifts may not be included in the CLS metric value due to windowing. Learn how to improve CLS

Why this matters

Performance issues directly impact user engagement and conversion rates.

ElementLayout shift score
Whitepapers More Addressing constrained grids with onsite generation 20 Apr 20… body.template-homepage > main#main > section.layout--two-col > aside.layout__rhs
0.052
Whitepapers More Addressing constrained grids with onsite generation 20 Apr 20… body.template-homepage > main#main > section.layout--two-col > aside.layout__rhs
0.052
Advertisement main#main > section.layout--two-col > div.layout__content > div.ad-unit
0.005
Search header#header > div.container > div.content > button.navigation-link
0.000
Search header#header > div.container > div.content > button.navigation-link
0.000

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

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.

Estimated savings: 120 ms 59.6 KiB

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: 60 ms 18.7 KiB
URLTransfer SizeEst Savings
www.datacenterdynamics.com/static/css/frontend.365a63456aff.css23.9 KiB18.7 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.

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
The page has an unload handler in the main frame.Actionable

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.adroll_consent_notice > div.adroll_consent_notice_title > div.adroll_consent_notice_title_text > img.adroll_consent_first_page_logo div.adroll_consent_notice > div.adroll_consent_notice_title > div.adroll_consent_notice_title_text > img.adroll_consent_first_page_logo
s.adroll.com/i/favicon/nextroll-32x32.png

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

Max Potential First Input Delay 80 ms
Optimize DOM size
Font display
LCP breakdown
Modern HTTP
Optimize viewport for mobile
Minify CSS
Avoids enormous network payloads Total size was 2,581 KiB
User Timing marks and measures 7 user timings
JavaScript execution time 1.0 s
Minimizes main-thread work 1.9 s
Avoid long main-thread tasks 6 long tasks found
Network Requests
Network Round Trip Times 100 ms
Server Backend Latencies 160 ms
Tasks
Diagnostics
Metrics
Screenshot Thumbnails
Final Screenshot
Script Treemap Data
Resources Summary
Initial server response time was short Root document took 30 ms
INP breakdown
Avoid non-composited animations
91

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
This website uses cookies to ensure you get the best experience on our website.… body.template-homepage > div.cc-window > span#cookieconsent:desc
Learn more body.template-homepage > div.cc-window > span#cookieconsent:desc > a.cc-link
Create a free account now div.registration-block > div.registration-block__text > div.registration-block__links > a.button

These are opportunities to improve the legibility of your content.

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.container > div.content > h1.header-navigation__header-logo > a.logo-link div.container > div.content > h1.header-navigation__header-logo > a.logo-link

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Best practices

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Got it! body.template-homepage > div.cc-window > div.cc-compliance > a.cc-btn

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
Got it! body.template-homepage > div.cc-window > div.cc-compliance > a.cc-btn
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.
Select elements have associated label elements.
`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
`<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 `[lang]` attribute
`<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
Heading elements appear in a sequentially-descending order
Document has a main landmark.
Deprecated ARIA roles were not used
ARIA IDs are unique
All heading elements contain content.
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
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
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
The document does not use `<meta http-equiv="refresh">`
`<object>` elements have alternate text
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>`.
Uses ARIA roles only on compatible elements
Image elements do not have `[alt]` attributes that are redundant text.
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
SharedStorage
StorageType.persistent is deprecated. Please use standardized navigator.storage instead.
Fledge
AttributionReporting
Unload event listeners are deprecated and will be removed.

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
Mitigate DOM-based XSS with Trusted Types
Redirects HTTP traffic to HTTPS
Ensure proper origin isolation with COOP
Mitigate clickjacking with XFO or CSP
Detected JavaScript libraries
83

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.

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
SETTINGS div.adroll_consent_notice > div.adroll_consent_notice_title > div.adroll_consent_notice_title_settings > a#adroll_consent_settings
20 advertising partners div.adroll_consent_notice_text > span#navigate > div.adroll_consent_box > a.adroll_consent_banner_partners_link_class
advertising partners div.adroll_consent_notice_text > span#navigate > div.adroll_consent_box > a.adroll_consent_banner_partners_link_class
advertising partners div.adroll_consent_notice_text > span#navigate > div.adroll_consent_box > a.adroll_consent_banner_partners_link_class
DECLINE ALL div#adroll_consent_banner_container > div#adroll_consent_banner > div.adroll_consent_button_bar > a#adroll_consent_reject
ALLOW ALL div#adroll_consent_banner_container > div#adroll_consent_banner > div.adroll_consent_button_bar > a#adroll_consent_accept
Manage consent preferences body.template-homepage > div#adroll_consent_container > div#nextroll_consent_persistent_icon > a#adroll_consent_persistent_icon_href

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
Document has a meta description
Page has successful HTTP status code
robots.txt is valid
Image elements have `[alt]` attributes
Document has a valid `hreflang`
Document has a valid `rel=canonical`

Send Feedback