Website Tech Scan
Analyze any website to discover its underlying programming languages, frameworks, web servers, and CMS.
Permanently Scanned Sites
How Does Technology Scanning Work?
Websites leave behind small digital signatures and fingerprint trails in their HTTP response headers, cookies, and HTML structures. This tool analyzes those footprints to accurately identify the programming languages, web servers, Content Management Systems (CMS), and CSS/JS frameworks.
HTTP Headers
Headers like Server and X-Powered-By explicitly advertise the server engine and backend environments used by the site.
Set-Cookie Fingerprints
System-defined cookie names (such as PHPSESSID or JSESSIONID) are reliable identifiers for languages like PHP and Java.
HTML Signatures
Scanning the markup structure reveals CMS generator tags (like WordPress), JS framework mounts (React, Vue), and Tailwind classes.
Frequently Asked Questions
How accurate is the technology detection?
Our technology scanner achieves high accuracy by analyzing multiple data points including HTTP headers, cookies, HTML structure, and JavaScript patterns. Detection confidence is displayed for each identified technology.
Is this technology scanner free to use?
Yes, our website technology scanner is completely free with no registration required. You can scan unlimited websites to discover their technology stacks, web servers, and frameworks.
What technologies can this tool detect?
Our scanner detects web servers (Nginx, Apache, LiteSpeed), programming languages (PHP, Python, Node.js, Ruby), CMS platforms (WordPress, Drupal, Joomla), JavaScript frameworks (React, Vue, Angular), and CSS frameworks (Tailwind, Bootstrap).
How often are scan results updated?
Scan results are cached for 3 days to optimize performance. You can use the rescan button to force a fresh scan at any time. This ensures you get the most up-to-date technology information.