Website technology checker
Find out what any website is built with: CMS, framework, ecommerce platform and front-end libraries.
What the technology checker detects
Public signals in a page's HTML, headers and cookies.
CMS and site builders
WordPress, Shopify, Webflow, Wix, Squarespace, Framer and more.
Frameworks
Next.js, Nuxt, React, Vue, Angular, Astro, SvelteKit and others.
Versions where visible
Version numbers when the site exposes them.
Revealing headers
Server and X-Powered-By headers that disclose the stack.
How it works
Enter a URL
Any public page.
We read the page
HTML, response headers and cookies are matched against known signals.
See the stack
Each technology is listed with category, version and confidence.
Detection relies on public signals, so back-end languages, databases and well-hidden stacks may not appear.
Questions
Enter its URL. The checker looks for telltale signals in the HTML, headers and cookies.
Some sites remove identifying markers, and back-end technologies often leave no public trace.
Yes. The website audit detects your stack and writes fixes for it.
Get fixes written for your stack
The website audit detects your framework or CMS and tailors every fix to it.
Run free audit