Platform Checker - Website Tech Detector

Instantly detect the technologies and frameworks powering any website.

Instantly discover the tech stack behind any website — automatically, as you browse. Platform Checker detects the technologies and frameworks powering any website you visit. No need to copy-paste URLs or switch tabs — just browse normally and click the extension icon to see what's under the hood. What it detects: - JavaScript Frameworks — React, Vue, Angular, Next.js, jQuery, and more - CMS Platforms — WordPress, Shopify, Drupal, Squarespace, Wix - Analytics & Tracking — Google Analytics, Hotjar, Mixpanel, Segment - CSS Frameworks — Bootstrap, Tailwind CSS, Bulma, Foundation - Hosting & Infrastructure — AWS, Vercel, Netlify, Cloudflare, Heroku - Payment Processing — Stripe, PayPal, Square, Braintree - Security — reCAPTCHA, Cloudflare WAF, SSL providers - Customer Support — Intercom, Zendesk, Drift, LiveChat Key features: - Automatic detection on every page you visit - Results organized by category for easy scanning - Badge counter shows detected technologies at a glance - Version detection where available - Rescan button for on-demand re-analysis - Link to full detailed report on platformchecker.com - Privacy friendly — only analyzes publicly visible page content Who is this for? - Developers researching tech stacks for new projects - Product managers evaluating competitor tools - Designers identifying UI frameworks and design systems - Marketers analyzing analytics and tracking setups - Agency teams auditing client websites Completely free. No account required. Install and start exploring.