Our verdict
Useful for competitor analysis or tech selection: one click tells you whether a site runs Next.js or WordPress, which CDN it uses, and what analytics it loads. Detection relies on a signature database, so obfuscated front ends or in-house frameworks are missed. The free tier is enough; exporting and history are paid.
Pros
- Broad tech stack coverage
- Bulk export available on paid plans
- Genuinely useful for competitor research
Cons
- In-house frameworks are often missed
- Some sites yield nothing
- Results need manual checking
Requirements
The latest version of any mainstream browser
Install steps
- Install the extension
- Open the target site and click the icon to see its stack
- Export a CSV when you need bulk data
Changelog
v6.102026-06Detects Astro and SvelteKit
