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Audit Complete

Results for https://datacenterdynamics.com

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Spain Spain · Madrid Completed: Apr 22, 2026 23:28 UTC
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Mobile 375 × 812

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Desktop 1440 × 900

Screenshot of the audited page (Desktop 1440×900)
C71

Site Health

Score: 71 / 100

Based on 8 categories, 0 sections

Decent speed, but optimizing further could improve engagement.

Several missing protections leave your users and data exposed.

Several issues make your site difficult for assistive technology users.

Missing signals may be hurting your search visibility.

Solid infrastructure — fast server responses across the board.

Mostly compliant — a few items need attention.

Missing metadata means poor previews on social media and search.

Reasonable footprint with room for optimization.

How is this calculated?

The overall score is a weighted average of individual category scores. Categories with more impact on user experience and security carry more weight.

Performance 25%Security 25%Accessibility 15%SEO 10%Infrastructure 10%Compliance 8%Content 5%Sustainability 2%

Weights reflect general web best practices. Individual needs may differ.

How the composite score is calculated

How you compare

AngularJS · 399 peers
You 71
·
Avg 73
At average
0 50 100
Better than 23% of AngularJS sites See full AngularJS benchmark →
Cloudflare Turnstile · 411 peers
You 71
·
Avg 73
At average
0 50 100
Better than 22% of Cloudflare Turnstile sites See full Cloudflare Turnstile benchmark →

Top Priorities (5)

1

Content-Security-Policy header is missing

Security gaps expose your site and users to attacks, eroding trust.

Security › Security Headers
2

HSTS header is missing

Security gaps expose your site and users to attacks, eroding trust.

Security › Security Headers
3

No Content-Security-Policy header found

Security gaps expose your site and users to attacks, eroding trust.

Security › Content Security Policy
4

No favicon or icon links detected

Accessibility issues exclude users with disabilities — up to 15% of your potential audience.

Accessibility › Favicon & Branding
5

171 third-party resources (100% of weight)

Performance issues directly impact user engagement and conversion rates.

Performance › Page Weight Inventory
View fix priority matrix

Fix Priority Matrix

5 findings

Quick Wins

3

High impact, low effort — start here.

Strategic

2

High impact, requires investment.

Easy Improvements

0

Small gains, minimal effort.

Nothing in this quadrant — good news.

Deprioritize

0

Low impact, high effort — do last.

Nothing in this quadrant — good news.

← Low effort High effort →
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What fixing these means

Your site performs reasonably well, but a few targeted fixes could meaningfully improve results. Your LCP of 5.7s exceeds Google's 2.5s 'Good' threshold and the 1 performance issue below directly contributes to it. Accessibility issues exclude users who rely on assistive technology — an estimated 15% of your potential audience. Addressing the critical issues below would have the most immediate impact on your user trust.

3 security gaps detected — browsers may warn visitors about your site.
1 accessibility issue excludes users who rely on assistive technology.
Your LCP is 5.7s — fixing the 1 performance critical could bring it under Google's 2.5s 'Good' threshold.

Conversion Barriers

2 critical 7 warning

9 barrier(s) likely increasing bounce by ~31%.

Speed (2)

Page takes 5.7s to load

+12% bounce

Users abandon at ~3s — you're 3.2s over the 2.5s threshold

Fix: Optimize render-blocking resources, preload the hero image, and compress images

Page feels frozen for 1.6s

+5% bounce

Clicks on the primary CTA are ignored while JavaScript runs

Fix: Break up long tasks; defer non-critical JavaScript to post-hydration

Trust (2)

No HSTS header

+1% bounce

Returning visitors are briefly exposed to downgrade attacks on first request

Fix: Set Strict-Transport-Security: max-age=31536000; includeSubDomains

No Content-Security-Policy header

+1% bounce

Higher XSS blast radius — one compromised script can exfiltrate the checkout form

Fix: Ship a reporting-only CSP first, then enforce once violations are clean

Content (4)

No Open Graph tags

+2% bounce

Links shared on LinkedIn / Slack / Facebook show bare URLs — referral clicks drop

Fix: Add og:title, og:description, og:image, og:url to the page head

No structured data

+2% bounce

No rich-result eligibility in Google — lower SERP CTR vs competitors with stars and prices

Fix: Add JSON-LD for your page type (Product, Article, FAQPage, LocalBusiness, …)

Thin content

+3% bounce

Under 300 words — visitors bounce looking for substance, search engines rank competitors first

Fix: Add a substantive FAQ, product detail, or case-study section

Content is hard to read

+2% bounce

Graduate-level reading difficulty — limits the addressable audience for product or blog pages

Fix: Shorten sentences; replace jargon with plain language; target Flesch ease ≥60

Navigation (1)

No skip-to-content link

+1% bounce

Keyboard and screen-reader users must tab through the entire header on every page

Fix: Add a visible-on-focus <a href="#main">Skip to content</a> as the first focusable element

Preliminary CRO audit — each barrier links to the tab with detailed analysis.

Return on Investment

$500 investment → $4,273/month returns + USD 150,000 risk avoided

Payback period: < 1 month First-year ROI: +10155%

Investment

$500

5h · 5 findings

Monthly returns

$4,273 /mo

~$51,276 / year

  • Conversions recovered $4,272
  • Bandwidth savings $0.63

Regulatory risk avoided

USD 150,000

if kept compliant

  • ADA Title III USD 150,000

Payback period

0 12mo 24mo

$150 — in quick wins — start here for the fastest payback

Figures combine localized regulatory fine ceilings, search/conversion value priced against local CPC, and bandwidth waste estimates. Results depend on implementation quality and audience composition. Not legal or financial advice.

Full methodology & sources

Estimated Remediation Cost

$500

5.0 developer hours at $100/hr

Based on United States rates ($100/hr)

Quick wins
$150 3 fixes in ~90 minutes

Start here for the best return on investment

Cost by category

Cost by effort level

Adjust assumptions
$ /hr

Rates reflect fully-loaded developer cost including overhead

How developer rates are sourced

What Inaction Is Costing You

$12,501 / month at risk

~$150,008 / year if left unfixed

Compliance Risk

$150,000

ADA Title III
  • No <nav> landmark found
    ADA Title III: USD 25,000 – USD 150,000
  • Skip navigation link is missing (WCAG 2.4.1)
    ADA Title III: USD 25,000 – USD 150,000

Bandwidth Waste

$0.63 /mo

7909.9 MB/mo × 0.080 USD/GB

  • Optimize transfer: save ~791 KB per page load
    Saves $0.63/mo

Compliance figures represent the statutory maximum fine for the most severe triggered category, capped per regulation — not the sum of per-finding penalties. Based on published regulatory fine ranges. This is not legal advice.

Compliance methodology · SEO assumptions · Bandwidth model

Your performance is already good — improvements may show diminishing returns

Unique monthly visitors from your analytics

Purchases, signups, or key actions

Optional — for revenue estimation

additional conversions/month

more engaged visitors from reduced bounce

potential monthly revenue
Current bounce (est.)
After fixes (est.)
Estimated bounce reduction

Fix 4 critical issues to capture this value

How this is calculated

Based on Google/Deloitte research ("Milliseconds Make Millions") showing a ~7% bounce rate increase per additional second of LCP above the 2.5s "Good" threshold.

Your site's LCP: → estimated after fixes.

These are estimates based on industry research — actual results vary

Bounce-rate model & assumptions

Your data stays in your browser — nothing is sent to our servers

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Lighthouse Scores

Industry-standard audits powered by Google Lighthouse.

42
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
91
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
77
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
83
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

Core Web Vitals

Key metrics that affect user experience.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

2.56 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

5.67 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

1.65 s

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.002

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

7.53 s

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

21.33 s

Detailed Report

Audit breakdown by category with detailed findings.

42

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

Shipping ES5 transpiled code to modern browsers wastes bytes — every user with an evergreen browser pays for compatibility you don't need.

Learn more

Most users today run browsers that natively support ES6+, async/await, optional chaining, and the rest of modern JavaScript. Transpiling to ES5 'just in case' adds 20-40% to your bundle for no benefit. Configure your build to target a modern browserslist, or ship a differential bundle pair (modern + legacy) with the module/nomodule pattern.

Source: Google web.dev / Lighthouse

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.

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:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:34.491 source:map[type:text value:[unattributed]]]]

Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-0-IMG
nodeLabel: 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
snap.licdn.com/li.lms-analytics/insight.min.js57856.0 s18.7 KiB
/cdn-cgi/challenge-platform/h/b/scripts/jsd/0b8fb825cb67/...14400.0 s12.2 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....2866.0 s1016 B
s.adroll.com/j/pre/index.js0.0 ms733 B
/collect?v=2&fmt=js&pid=7169642&time=1776900479594&url=ht...0.0 ms695 B
/consent/check/N7EHSCRPI5BI7EAVKEQAXU?pv=33483143522.1843...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 s585 B
/pagead/js/r20260422/r20110914/client/window_focus_fy2021.js1209600.0 s1.2 KiB
ok.datacenterdynamics.com/ping?uri=%2Fen%2F&aid=001jeguloc1o921&ts=17769004802260.0 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

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
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/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 KiB25.5 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
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

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: 1.6 s

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

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: 220 ms 59.6 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

Multi-megabyte JavaScript bundles delay every interactive feature on the page.

Learn more

This is the Lighthouse audit fired when too much JS is shipped relative to what executes. The fix isn't a config flag — it requires bundle analysis (webpack-bundle-analyzer, rollup-plugin-visualizer), splitting routes into chunks, lazy-loading off-screen components, and removing unused dependencies. Fundamentally different from minification: minifying reduces byte count, this reduces what's downloaded at all.

Source: Google web.dev / Lighthouse

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 Evaluation4.5 s
Other1.1 s
Style & Layout713 ms
Script Parsing & Compilation661 ms
Rendering195 ms
Garbage Collection163 ms
Parse HTML & CSS129 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
The page has an unload handler in the main frame.Actionable

Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 19.1 KiB
URLTransfer SizeEst Savings
www.datacenterdynamics.com/static/css/frontend.365a63456aff.css23.9 KiB19.1 KiB

Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL
div.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.

Layout shift culprits
Optimize DOM size
Font display
LCP breakdown
Modern HTTP
Optimize viewport for mobile
Minify CSS
Avoids enormous network payloads Total size was 2,575 KiB
User Timing marks and measures 7 user timings
Avoid long main-thread tasks 20 long tasks found
Network Requests
Network Round Trip Times 100 ms
Server Backend Latencies 170 ms
Tasks
Diagnostics
Metrics
Screenshot Thumbnails
Final Screenshot
Script Treemap Data
Resources Summary
Initial server response time was short Root document took 30 ms
Avoid large layout shifts 3 layout shifts found
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
Critical Power div.section > ul.plain-list--links > li > a.nav-link--light
Grid Level li > ul.plain-list--sub > li > a.nav-link--light
Rack Level li > ul.plain-list--sub > li > a.nav-link--light
Edge & IoT li > ul.plain-list--sub > li > a.nav-link--light
Enterprise li > ul.plain-list--sub > li > a.nav-link--light
HPC & Quantum li > ul.plain-list--sub > li > a.nav-link--light
Telecoms & 5G li > ul.plain-list--sub > li > a.nav-link--light
Crypto li > ul.plain-list--sub > li > a.nav-link--light
Security & Risk div.section > ul.plain-list--links > li > a.nav-link--light
Africa div.section > ul.plain-list--links > li > a.nav-link--light
China div.section > ul.plain-list--links > li > a.nav-link--light
Europe div.section > ul.plain-list--links > li > a.nav-link--light
Latin America div.section > ul.plain-list--links > li > a.nav-link--light
Middle East div.section > ul.plain-list--links > li > a.nav-link--light
North America div.section > ul.plain-list--links > li > a.nav-link--light
Asia Pacific div.section > ul.plain-list--links > li > a.nav-link--light
DCD>Academy div.section > ul.plain-list > li > a.nav-link--light
Awards 2026 div.section > ul.plain-list > li > a.nav-link--light
MarketWatch div.section > ul.plain-list > li > a.nav-link--light
DCD Magazine div.section > ul.plain-list > li > a.nav-link--light
Newsletters div.section > ul.plain-list > li > a.nav-link--light

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.
77

Best Practices

User Experience

Image natural dimensions should be proportional to the display size and the pixel ratio to maximize image clarity. Learn how to provide responsive images.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLDisplayed sizeActual sizeExpected size
Comparison graphic li > article.card > div.card__image > img
/media/images/Comparison_graphic.2e16d0ba.fill-280x185.png396 x 262280 x 185594 x 393
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.png22 x 2232 x 3233 x 33

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
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`

Lighthouse Scores

Industry-standard audits powered by Google Lighthouse. — Desktop

86
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
91
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
81
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
83
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

Core Web Vitals

Key metrics that affect user experience. — Desktop

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

954 ms

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

1.61 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

30 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.110

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

1.99 s

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

4.27 s

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

Shipping ES5 transpiled code to modern browsers wastes bytes — every user with an evergreen browser pays for compatibility you don't need.

Learn more

Most users today run browsers that natively support ES6+, async/await, optional chaining, and the rest of modern JavaScript. Transpiling to ES5 'just in case' adds 20-40% to your bundle for no benefit. Configure your build to target a modern browserslist, or ship a differential bundle pair (modern + legacy) with the module/nomodule pattern.

Source: Google web.dev / Lighthouse

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

Multi-megabyte JavaScript bundles delay every interactive feature on the page.

Learn more

This is the Lighthouse audit fired when too much JS is shipped relative to what executes. The fix isn't a config flag — it requires bundle analysis (webpack-bundle-analyzer, rollup-plugin-visualizer), splitting routes into chunks, lazy-loading off-screen components, and removing unused dependencies. Fundamentally different from minification: minifying reduces byte count, this reduces what's downloaded at all.

Source: Google web.dev / Lighthouse

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`

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