Chrome extensions
Listed on the Chrome Web Store. They also install in Brave, Vivaldi, Arc and other Chromium-based browsers.
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23 results
Accessibility Insights
Microsoft's open-source tools for finding and fixing accessibility problems in web pages and Windows apps.
AccessibilityChecker.org
Web accessibility scanner that audits a site against WCAG and ADA and explains how to fix issues.
Ahrefs Free
Free website analytics, technical site audit and SEO metrics from Ahrefs for verified websites.
ARC Toolkit
Browser extension from TPGi that finds accessibility issues on individual web pages.
axe DevTools
Accessibility testing tools and browser extension from Deque, built on the axe-core rules engine.
Browserling
Online cross-browser testing service with live interactive sessions in real desktop browsers.
BuiltWith
A web tool that detects the technologies a website is built with.
Checkbot
Chrome extension that crawls a website and tests its pages for SEO, speed and security problems.
CSP Evaluator
A Google web tool that checks whether a Content Security Policy mitigates cross-site scripting.
Detailed SEO Extension
A free browser extension that shows a page's SEO tags, headings and links in one click.
IBM Equal Access Accessibility Checker
IBM's open-source browser extension and toolkit for automated accessibility checks of web pages.
ReqBin
An online tool for sending REST and SOAP API requests directly from the browser.
SEOquake
A free browser extension from Semrush for on-page SEO audits, link checks and page metrics.
Sitechecker
An online SEO audit platform with a free on-page checker, site crawler, rank tracker and monitoring.
Sitechecker Broken Link Checker
Online tool from the Sitechecker SEO platform that finds 404 and dead links across a website.
Sitechecker Website Monitoring
A hosted SEO monitoring tool that tracks website changes and technical issues that affect search ranking.
Stark
A suite of accessibility tools for checking and fixing issues across design and development.
StatusGator
A hosted service that monitors thousands of cloud status pages and alerts teams about outages.
urlscan.io
Sandbox for the web that loads a URL and records screenshots, requests and indicators.
W3Techs Site Info
A free web lookup that shows the CMS, programming language, web server and host a site uses.
WAVE
A suite of web accessibility evaluation tools, available online and as browser extensions.
WhatRuns
A free browser extension that shows the technologies a website is built with.
WooRank
A web-based website review that audits a URL for SEO, usability and accessibility issues.
