https://seowebchecker.com/ai-website-tester

Lighthouse Desktop

· 0 checks — Desktop Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.

SCORE

GRADE

FIX

REVIEW

PASS

INFO

Detailed Report

Audit breakdown by category with detailed findings.

Performance

Insights

Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile Baseline features, unless you know you must support older browsers. Learn why most sites can deploy ES6+ code without transpiling

Why this matters

Performance issues directly impact user engagement and conversion rates.

3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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:0.2218774228759887] map[node:map[boundingRect:map[bottom:1358 height:918 left:0 right:1350 top:440 width:1350] lhId:page-1-SECTION nodeLabel:LIVE AI-POWERED ANALYSIS The Most Advanced AI Website Tester Enter any URL for… path:1,HTML,1,BODY,6,SECTION selector:body > section#hero snippet:<section id="hero" aria-label="AI Website Tester"> type:node] score:0.2218774228759887 subItems:map[items:[map[cause:Web font extra:map[type:url value:https://fonts.gstatic.com/s/inter/v20/UcCo3FwrK3iLTcviYwYZ8UA3.woff2]]] type:subitems]]]

items: [map[node:map[type:text value:Total] score:0.0002026344197822724] map[node:map[boundingRect:map[bottom:836 height:144 left:85 right:385 top:692 width:300] lhId:page-6-DIV nodeLabel:gpp_maybe How your data is used Your privacy preferences are important. That's… path:1,HTML,1,BODY,42,DIV,a,#document-fragment,3,TOOLBAR,1,DIV,0,DIV selector:toolbar#ft-floating-toolbar > div#ft-reg-bubble > div.ft-reg-bubble-content snippet:<div class="ft-reg-bubble-content"> type:node] score:0.0002026344197822724 subItems:map[items:[map[cause:Web font extra:map[type:url value:https://fonts.gstatic.com/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2]]] type:subitems]]]

items: [map[node:map[type:text value:Total] score:7.245862884160756e-05] map[node:map[boundingRect:map[bottom:933 height:19 left:254 right:1096 top:914 width:842] lhId:page-8-P nodeLabel:Supports HTTP & HTTPS · No account required · Results in ~15–30s path:1,HTML,1,BODY,6,SECTION,5,DIV,3,P selector:body > section#hero > div#tester-card > p#url-hint snippet:<p id="url-hint" class="input-hint"> type:node] score:7.245862884160756e-05]]

Consider setting font-display to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with font metric overrides.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Est Savings
/s/googlesymbols/v470/HhzZU5Ak9u-oMExPeInvcuEmPosC9zyteYE...	150 ms
/s/opensans/v44/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-mu...	55 ms
/s/googlesanstext/v29/5aUp9-KzpRiLCAt4Unrc-xIKmCU5oLlVnmh...	40 ms
/s/googlesanstext/v29/5aUu9-KzpRiLCAt4Unrc-xIKmCU5qEp2i0V...	40 ms
/s/googlesans/v76/4Ua_rENHsxJlGDuGo1OIlJfC6l_24rlCK1Yo_Iq...	30 ms
/s/googlesans/v76/4Ua_rENHsxJlGDuGo1OIlJfC6l_24rlCK1Yo_Iq...	25 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:source label:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]

items: [map[reflowTime:2.142 source:map[column:638 line:395 type:source-location url:https://pagead2.googlesyndication.com/pagead/managed/js/adsense/m202611040101/show_ads_impl_fy2021.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:44.372 source:map[type:text value:[unattributed]]] map[reflowTime:1.504 source:map[column:432 line:802 type:source-location url:https://pagead2.googlesyndication.com/pagead/managed/js/adsense/m202611040101/show_ads_impl_fy2021.js urlProvider:network]] map[reflowTime:0.638 source:map[column:344 line:794 type:source-location url:https://pagead2.googlesyndication.com/pagead/managed/js/adsense/m202611040101/show_ads_impl_fy2021.js urlProvider:network]]]

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.

URL	Transfer Size	Duration
seowebchecker.com/css/ai-llm-website-tester.css	14.1 KiB	290 ms
/css2?family=Inter:opsz,wght@14..32,300;14..32,400;14..32...	1.4 KiB	232 ms

A long cache lifetime can speed up repeat visits to your page. Learn more about caching.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Request	Cache TTL	Transfer Size
/pagead/managed/js/activeview/current/ufs_web_display.js	3600.0 s	74.7 KiB
/pagead/managed/js/adsense/m202611040101/show_ads_impl_fy...	1209600.0 s	168.7 KiB
/mysidia/de889187b8e596df2778dce95e0f013e.js?tag=addon/my...	86400.0 s	18.8 KiB
/pagead/js/r20261105/r20110914/client/qs_click_protection...	1209600.0 s	8.4 KiB
pagead2.googlesyndication.com/pagead/js/r20261105/r20110914/abg_lite_fy2021.js	1209600.0 s	8.3 KiB
/pagead/js/r20261105/r20110914/client/window_focus_fy2021.js	1209600.0 s	1.2 KiB
/pagead/js/r20261105/r20110914/client/load_preloaded_reso...	1209600.0 s	827 B

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

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.

Element	Layout shift score
LIVE AI-POWERED ANALYSIS The Most Advanced AI Website Tester Enter any URL for… `body > section#hero`	0.222
gpp_maybe How your data is used Your privacy preferences are important. That's… `toolbar#ft-floating-toolbar > div#ft-reg-bubble > div.ft-reg-bubble-content`	0.000
Supports HTTP & HTTPS · No account required · Results in ~15–30s `body > section#hero > div#tester-card > p#url-hint`	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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 170 ms 412.3 KiB

URL	Transfer Size	Est Savings
/pagead/managed/js/adsense/m202611040101/show_ads_impl_fy...	168.6 KiB	87.5 KiB
cdnjs.cloudflare.com/ajax/libs/jspdf/2.5.1/jspdf.umd.min.js	93.2 KiB	77.3 KiB
www.googletagmanager.com/gtag/js?id=G-96YN5SEMCD&cx=c&gtm=4e6b50	162.2 KiB	70.0 KiB
www.googletagmanager.com/gtag/js?id=UA-142294912-2	132.4 KiB	69.2 KiB
cdnjs.cloudflare.com/ajax/libs/Chart.js/4.4.1/chart.umd.min.js	58.7 KiB	52.3 KiB
/i/ca-pub-6869302511765147?href=https%3A%2F%2Fseowebcheck...	70.0 KiB	33.9 KiB
pagead2.googlesyndication.com/pagead/js/adsbygoogle.js	56.9 KiB	22.1 KiB

Minifying CSS files can reduce network payload sizes. Learn how to minify CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 2.4 KiB

URL	Transfer Size	Est Savings
seowebchecker.com/css/ai-llm-website-tester.css	14.1 KiB	2.4 KiB

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: 0.0 ms 3.1 KiB

URL	Transfer Size	Est Savings
seowebchecker.com/js/website-test-ai.js	12.8 KiB	3.1 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: 0.0 ms 17.3 KiB

URL	Transfer Size	Est Savings
.fc-consent-root .fc-cutout-background { background-color: rgb(255, 255, 255) !important; … } …	17.4 KiB	17.3 KiB

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

●Max Potential First Input Delay 90 ms

●Document request latency

●Optimize DOM size

●Improve image delivery

●LCP breakdown

●Modern HTTP

●Optimize viewport for mobile

●Avoids enormous network payloads Total size was 2,405 KiB

●JavaScript execution time 0.6 s

●Minimizes main-thread work 1.6 s

●Avoid long main-thread tasks 3 long tasks found

●Avoid non-composited animations 2 animated elements found

●Image elements have explicit `width` and `height`

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 30 ms

●Server Backend Latencies 230 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Avoid multiple page redirects

●Initial server response time was short Root document took 270 ms

○INP breakdown

○LCP request discovery

○User Timing marks and measures

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
Home `body > nav.breadcrumb > a`
AI Tools `body > nav.breadcrumb > a`
Supports HTTP & HTTPS · No account required · Results in ~15–30s `body > section#hero > div#tester-card > p#url-hint`
Meta, titles, schema, canonicals `div.test-options > label.test-option > span.to-body > em`
TTFB, compression, caching `div.test-options > label.test-option > span.to-body > em`
WCAG 2.1 AA/AAA checks `div.test-options > label.test-option > span.to-body > em`
Headers, HTTPS, CSP, XSS `div.test-options > label.test-option > span.to-body > em`
Viewport, touch targets `div.test-options > label.test-option > span.to-body > em`
Live 404/301 checks (30 links) `div.test-options > label.test-option > span.to-body > em`
Render-blocking, inline styles `div.test-options > label.test-option > span.to-body > em`
Sync scripts, eval, jQuery `div.test-options > label.test-option > span.to-body > em`
JSON-LD, Schema.org `div.test-options > label.test-option > span.to-body > em`
OG, Twitter/X cards `div.test-options > label.test-option > span.to-body > em`
Alt, lazy-load, dimensions `div.test-options > label.test-option > span.to-body > em`
Soft-404, cookie consent `div.test-options > label.test-option > span.to-body > em`
Font-display, web fonts `div.test-options > label.test-option > span.to-body > em`
Doctype, deprecated tags, IDs `div.test-options > label.test-option > span.to-body > em`
HTTPS redirect, www/non-www `div.test-options > label.test-option > span.to-body > em`
Secure, HttpOnly, SameSite `div.test-options > label.test-option > span.to-body > em`
Free AI-powered tools for SEO, web testing, content generation, and developer u… `footer > div.footer-grid > div.footer-brand > p`
⚠️ Disclaimer: All product names, logos, and trademarks are property of their re… `footer > div.footer-grid > div.footer-brand > p.disclaimer`
Disclaimer: `div.footer-grid > div.footer-brand > p.disclaimer > strong`
Generator Tools `div.footer-col > ul.footer-links > li > a`
Converter Tools `div.footer-col > ul.footer-links > li > a`
AI Tools `div.footer-col > ul.footer-links > li > a`
Testing Tools `div.footer-col > ul.footer-links > li > a`
Calculators `div.footer-col > ul.footer-links > li > a`
Time Tools `div.footer-col > ul.footer-links > li > a`
Image Tools `div.footer-col > ul.footer-links > li > a`
Encryption Tools `div.footer-col > ul.footer-links > li > a`
Networking Tools `div.footer-col > ul.footer-links > li > a`
Dev Tools `div.footer-col > ul.footer-links > li > a`
Text Tools `div.footer-col > ul.footer-links > li > a`
Fractal Generator `div.footer-col > ul.footer-links > li > a`
PDF Tools `div.footer-col > ul.footer-links > li > a`
Binary Translator `div.footer-col > ul.footer-links > li > a`
Security Tools `div.footer-col > ul.footer-links > li > a`
SEO AI Directory `div.footer-col > ul.footer-links > li > a`
© 2026 SEOWebChecker.com — All Rights Reserved `body > footer > div.footer-bottom > span`
Privacy Policy `footer > div.footer-bottom > div.footer-legal > a`
Cookie Policy `footer > div.footer-bottom > div.footer-legal > a`
Feedback `footer > div.footer-bottom > div.footer-legal > a`

These are opportunities to improve the legibility of your content.

Navigation

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Tool Categories `footer > div.footer-grid > div.footer-col > h4`

These are opportunities to improve keyboard navigation in your application.

Best practices

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
html `html`

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 > div#cookie-banner > button#cookie-dismiss`
Analyze Now `section#hero > div#tester-card > div.input-row > button#analyze-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

●Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.

●`[role]` values are valid

●`[aria-*]` attributes have valid values

●`[aria-*]` attributes are valid and not misspelled

●Buttons have an accessible name

●Form elements have associated labels

●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.

●`button`, `link`, and `menuitem` elements have accessible names

●ARIA attributes are used as specified for the element's role

●`[aria-hidden="true"]` elements do not contain focusable descendents

●Elements use only permitted ARIA attributes

●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.

●Links have a discernible name

●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).

●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements

●No element has a `[tabindex]` value greater than 0

●Touch targets have sufficient size and spacing.

●Deprecated ARIA roles were not used

●Uses ARIA roles only on compatible elements

●Identical links have the same purpose.

○`[accesskey]` values are unique

○Elements with `role="dialog"` or `role="alertdialog"` have accessible names.

○ARIA input fields have accessible names

○ARIA `meter` elements have accessible names

○ARIA `progressbar` elements have accessible names

○`[role]`s are contained by their required parent element

○Elements with the `role=text` attribute do not have focusable descendents.

○ARIA toggle fields have accessible names

○ARIA `tooltip` elements have accessible names

○ARIA `treeitem` elements have accessible names

○The page contains a heading, skip link, or landmark region

○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.

○Definition list items are wrapped in `<dl>` elements

○ARIA IDs are unique

○No form fields have multiple labels

○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.

○Image elements have `[alt]` attributes

○Input buttons have discernible text.

○`<input type="image">` elements have `[alt]` text

○The document does not use `<meta http-equiv="refresh">`

○`<object>` elements have alternate text

○Select elements have associated label elements.

○Skip links are focusable.

○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.

○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.

○`[lang]` attributes have a valid value

○`<video>` elements contain a `<track>` element with `[kind="captions"]`

○Tables have different content in the summary attribute and `<caption>`.

○All heading elements contain content.

○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.

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 / Warning	Source
FencedFrame	/cdn-cgi/challenge-platform/scripts/jsd/main.js?ray=a57f0...
StorageType.persistent is deprecated. Please use standardized navigator.storage instead.	/cdn-cgi/challenge-platform/scripts/jsd/main.js?ray=a57f0...
Fledge	/cdn-cgi/challenge-platform/scripts/jsd/main.js?ray=a57f0...

●Uses HTTPS

●Avoids third-party cookies

●Allows users to paste into input fields

●Avoids requesting the geolocation permission on page load

●Avoids requesting the notification permission on page load

●Displays images with correct aspect ratio

●Serves images with appropriate resolution

●Page has the HTML doctype

●Properly defines charset

●No browser errors logged to the console

●No issues in the `Issues` panel in Chrome Devtools

●Ensure CSP is effective against XSS attacks

●Use a strong HSTS policy

●Ensure proper origin isolation with COOP

●Mitigate DOM-based XSS with Trusted Types

●Page has valid source maps

○Redirects HTTP traffic to HTTPS

○Mitigate clickjacking with XFO or CSP

○Detected JavaScript libraries

100

SEO

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

○Structured data is valid

●Page isn’t blocked from indexing

●Document has a `<title>` element

●Document has a meta description

●Page has successful HTTP status code

●Links have descriptive text

●Links are crawlable

●robots.txt is valid

●Document has a valid `hreflang`

●Document has a valid `rel=canonical`

○Image elements have `[alt]` attributes