33 free tools

Free website tools

Quick checks for SEO, social previews, security and more. No sign-up, and answers in seconds.

Speed & UX auditMost complete Everything below plus Lighthouse speed tests, Core Web Vitals, a UX audit and AI fixes, in one report graded A+ to F. Run a full audit

Speed & UX

Speed, accessibility and usability, tested the way visitors feel them.

Full auditCore Web Vitals CheckerCheck LCP, INP and CLS for any page, from real Chrome users and a lab test, and see whether it passes Google’s assessment. Open tool
Full auditWebsite Accessibility CheckerFind contrast, label, heading and keyboard problems that stop people from using your site, with a fix for each. Open tool
Full auditMobile-Friendly TestSee how a page loads and feels on a phone: speed, tap targets, zoom, text size and layout. Open tool
Full auditImage Optimization CheckerFind images that are too big, in old formats or loaded at the wrong time, and how much faster the page gets when you fix them. Open tool
In your browserColor Contrast CheckerCheck any text and background pair against WCAG, and get the closest colors that pass, in the same hue. Open tool
In your browserA/B Test Significance CalculatorFind out if your variant really won, or how many visitors you need before you start. Open tool
Website Font CheckerSee which fonts a site loads, how big they are and whether they hide text while loading. Open tool
AIUX Writing CheckerCheck the words on your page: buttons, headings, menus and forms. Get AI rewrites for anything vague, inconsistent or off-tone. Open tool
AIImage Alt Text GeneratorFind images with missing or unhelpful alt text, and get AI-written alt text for each one, ready to paste. Open tool

SEO & social

How search engines and social apps see your pages.

Security & tech

Headers, redirects and the stack behind a site.

Coming next

Landing page conversion audit
Uptime monitor
SSL expiry alerts
Broken link monitor
Competitor change alerts
Scheduled re-scans