What Wappalyzer is

For developers, Wappalyzer turns debugging context and competitive curiosity into a dropdown: click the icon, see the detected stack. Detection is heuristic, so treat absence of a technology as unknown rather than absent.

Feature coverage

  • Framework and CMS detection
  • Analytics and marketing tag identification
  • Hosting and CDN hints
  • Technology categories with versions where detectable
  • Export options on paid tiers

What stands out

  • Instant stack identification
  • Solid 4.6 rating across 2K ratings
  • Free for the core use case

Tradeoffs to know

  • Detection is heuristic—absence is not proof
  • Deeper data and exports sit behind paid plans
  • Store lists website content among handled categories

Permissions and privacy

Page access

Detection requires reading page markup and requests on the sites you visit with it enabled.

Data notes

The Chrome Web Store lists website content among handled data categories; consider disabling it on sensitive internal sites.

Pricing

Free extension; paid plans add lookups and exports. Pricing and plan limits change more often than store metadata, so use the linked developer page as the final check before subscribing.

Alternatives

AlternativeReact Developer ToolsAlternativeJSON Formatter

Sources

We used the official Chrome Web Store listing and first-party developer material. Public metrics can change after the fact-check date.

  1. Chrome Web Store listing

    Store facts and data categories.

  2. Wappalyzer website

    Product and plan documentation.

  3. Extension Reviewer methodology

    How we verify public claims and weigh tradeoffs.

View in Chrome Web Store Developer site

More in Developer tools

See the developer tools guide