See everything about any webpage, instantly
Design, SEO, accessibility, and performance — audited live, in your browser
Pagelyze is a browser extension that audits any page you're looking at: real colors and fonts as rendered, structured data, accessibility issues, and Core Web Vitals. Nothing is crawled and nothing leaves your browser — every check runs directly against the page in your own tab.
Every layer of a page, in one panel
Pagelyze opens as a side panel next to any page you're looking at. Nothing to configure, nothing to crawl — it reads the page exactly as your browser renders it.
Design tokens, live
Colors, fonts, spacing, border radius, shadows, and z-index values, captured exactly as the browser renders them, not guessed from a stylesheet.
Full accessibility audit
Missing alt text, unlabeled form fields, heading hierarchy issues, WCAG contrast checking, and a live colorblind simulation on the actual page.
SEO score and structured data
A scored checklist plus every schema.org block the page ships, shown as a readable tree or raw JSON.
AI search readiness
A checklist for how AI answer engines like ChatGPT and Perplexity would read the page, not just traditional search.
Core Web Vitals
LCP, CLS, and INP at a glance, measured on the page as it actually loaded for you.
Responsive testing
Preview the page at real device sizes or a custom resolution without leaving the tab.
Backlinks and broken assets
Do-follow and no-follow link breakdowns, broken link detection, and a check for broken images.
Screenshot and annotate
Capture the visible area or the full page, then mark it up with arrows, highlights, or redaction before exporting.
Exports built for handoff
Style guides, SEO reports, table-of-contents links, and starter-kit configs (Tailwind, CSS variables, design tokens JSON), ready to share.
What the side panel shows you
An illustrative preview with sample data. Install Pagelyze and every tab below runs live against the page you're actually looking at.
Heading text
#0C1B33
Accent / CTA
#00BCD4
Page background
#F6F8FB
Body text
#4A5D78
Ready to buy
Pagelyze is ready to license. Tell us a bit about your team or use case and we'll follow up with pricing and next steps.
Common questions about Pagelyze
Pagelyze is a browser extension that audits any webpage you're looking at for design, SEO, accessibility, and performance. It opens as a side panel and reads the page directly from your browser, so results reflect the page exactly as it actually rendered for you.
Do you have more questions?
We're happy to walk through scope, timeline, and cost before you commit to anything.
Book a free consultation