Website Technology Detector
Paste a page’s HTML source or HTTP response headers to instantly detect frameworks, CMS platforms, analytics, CDNs, and more — all processed in your browser.
Paste your content above and click Detect
How It Works
Paste Your Source
Right-click any web page, choose “View Page Source”, copy the HTML, and paste it into the tool. You can also paste HTTP response headers.
Instant Detection
The tool scans for 60+ technology signatures — frameworks, CMS platforms, analytics scripts, CDN headers, fonts, and meta tags. Everything runs in your browser.
Review & Share
Get a technology grade, category breakdown, and ReleaseRun health badges for tracked technologies. Copy the results as Markdown to share with your team.
FAQ
Is my data sent anywhere?
No. Everything runs entirely in your browser using JavaScript. The HTML and headers you paste never leave your device. The only network requests are badge image fetches from our badge service.
Why paste HTML instead of entering a URL?
Browsers block cross-origin requests (CORS), so we cannot fetch arbitrary URLs from client-side JavaScript. Pasting the source ensures your data stays private and the tool works without any server-side processing.
How is the technology grade calculated?
The grade (A–F) evaluates five factors: use of a modern framework, presence of security headers, analytics configuration, CDN usage, and responsive/SEO meta tags. Each factor contributes to the overall score.
What technologies can this tool detect?
The detector covers frameworks (React, Vue, Angular, Next.js, Nuxt, Svelte, Gatsby, Remix), CMS platforms (WordPress, Drupal, Joomla, Ghost, Shopify, Wix, Squarespace, Webflow), JS libraries (jQuery, Bootstrap, Tailwind, Alpine.js, HTMX), analytics (Google Analytics, Hotjar, Segment, Plausible, Fathom, Matomo), CDNs, fonts, and HTTP server/security headers.
Track every technology in your stack
Monitor releases, EOL dates, and security advisories across your entire technology stack — delivered the moment new versions land.