Website Health Report

Flagship

A full SEO, accessibility, security & UX audit of any page — in your browser.

Analyze a page

Website URL

Most accurate

Drag & drop an .html file, or paste the source below

Self-audit checklist

These can't be verified automatically from a browser — check off what you've confirmed on the live site. They count toward that category's score alongside any automated findings.

Accessibility

Text has sufficient color contrast against its background

The whole site is usable with only a keyboard

Every form field has a visible, associated label

Videos have captions or transcripts

Buttons and links are large enough to tap accurately on mobile

No unintended horizontal scrolling on mobile

Body text is readable without zooming on mobile

Navigation makes it obvious where to go next

Performance

Images are compressed and served in a modern format (WebP/AVIF)

Below-the-fold images use lazy loading

Static assets are served with caching headers

Checked Core Web Vitals in PageSpeed Insights or Lighthouse

Security

No mixed content warnings (HTTP resources on an HTTPS page)

CMS/plugins/dependencies are kept up to date

Forms validate and sanitize input on the server, not just in the browser

The site has recent, tested backups

Your report will appear here

Enter a URL and choose how to provide the page's HTML, then hit Analyze.

100% client-side — nothing you enter here ever leaves your browser.

SmoothWeb Toolkit

Free, professional-grade business tools that run entirely in your browser.

No cookies, no accounts, no tracking — everything runs in your browser.

Command palette

Jump to any tool or page