Developer Tool · Trending 2026

Website Technology Detector

Enter any URL — instantly reveal its CMS, framework, analytics tools, CDN, server type, and security headers.

Try:

Enter any URL

Paste the homepage or any page of the site. HTTPS and HTTP both work. The tool normalises your input automatically.

Instant server fetch

Our async backend fetches the page, inspects HTTP headers and HTML source, and runs 60+ technology fingerprints in under 3 seconds.

Grouped results

Detected technologies are grouped by category — CMS, framework, analytics, CDN, security headers, and more — for easy scanning.

What is a Website Technology Detector?

A website technology detector (also called a tech stack analyzer or web stack checker) identifies the software and services that power any website. It works by examining the HTTP response headers, HTML source code, script URLs, meta tags, and cookie names that sites expose to browsers — each of which serves as a fingerprint for a specific technology.

Common use cases include competitive research (what platform is my competitor using?), security audits (is this site using outdated software?), sales prospecting (find all WordPress sites in a niche), and developer curiosity (how is that fast website built?).

Our tool detects over 60 technologies across categories including content management systems (WordPress, Shopify, Wix, Webflow, Drupal), front-end frameworks (React, Next.js, Vue, Angular, Nuxt), CDN providers (Cloudflare, AWS CloudFront, Fastly, Akamai), analytics platforms (Google Analytics, Hotjar, Mixpanel, Plausible), and security policies (HSTS, Content Security Policy).

Frequently Asked Questions

The tool fetches the target website's HTTP response headers and HTML source, then runs dozens of regex-based pattern matchers against them. Each technology has known fingerprints — a unique script URL, a header name, an HTML attribute, or a meta tag — that our engine identifies in milliseconds.

Direct HTTP requests from a browser to third-party sites are blocked by CORS security policies. Our server acts as an intermediary — it fetches the target site, inspects all headers and HTML, and returns clean structured results. The target site only ever sees our server's IP, not yours.

No. The server uses an async semaphore that caps the number of concurrent outbound fetches. Requests beyond the cap queue in memory and are served as soon as a slot frees up, within the connection timeout. The FastAPI event loop itself is never blocked.

Accuracy is high (90%+) for popular platforms. Technologies that obfuscate or lazy-load their scripts may occasionally go undetected. Confidence levels (high / medium) are displayed alongside each result so you can judge accordingly.

No. URLs are processed in-memory and never written to a database or log file. Each request is stateless and ephemeral.