How does technology detection work?

The tool fetches the website's HTML source through a public proxy and scans it for fingerprints of known technologies — script filenames, meta tags, class names, and global variables. This covers most front-end frameworks, CMSs, and analytics tools.

Can it detect back-end technologies like PHP or Node.js?

Partially. Server-side technologies are sometimes revealed in HTTP headers (e.g. X-Powered-By) or HTML comments, but are often hidden in production environments for security reasons.

Why were some technologies not detected?

Technologies loaded via dynamic imports, obfuscated bundles, or server-side rendering without telltale markers may not be detected. Some sites also strip identifying information as a security measure.

Is this the same as Wappalyzer?

Similar concept — both scan HTML source for technology fingerprints. Wappalyzer has a much larger database. This tool covers the most common technologies for quick identification.

How accurate is technology detection?

Detection is based on known fingerprints: specific HTML patterns, script URLs, meta tags, HTTP headers, and cookie names. Technologies that hide their fingerprints (e.g., custom builds, obfuscated code) may not be detected.

Can it detect backend languages like PHP or Python?

Server-side languages are not directly visible in HTTP responses in most cases. The tool can detect hints (X-Powered-By headers, cookie names, URL patterns) but cannot reliably identify all backend technologies.

Website Technology Checker — Detect Tech Stack Free Online

Detect the CMS, JavaScript frameworks, analytics, CDN, and other technologies used by any website. Free, instant results.

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Technology detection is based on HTML source analysis fetched server-side. Technologies loaded dynamically via JavaScript or obfuscated may not be detected.

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What is Website Technology Checker — Detect What Tech a Site Uses?

A website technology checker analyzes a webpage's HTML, HTTP headers, scripts, and meta tags to identify the technologies powering it — CMS (WordPress, Shopify, Wix), JavaScript frameworks (React, Vue, Angular), analytics tools (Google Analytics, Hotjar), CDN providers, and more. It gives you an instant view of a site's technology stack without any access to the backend.

How to Use Website Technology Checker — Detect What Tech a Site Uses

1Enter the URL of the website you want to analyze.
2Click Detect Technologies to fetch and analyze the page.
3Review detected technologies grouped by category.
4Click any technology name to learn more about it.

Key Features

CMS detection (WordPress, Shopify, Drupal, Wix, Squarespace)
JavaScript framework detection (React, Vue, Angular, Next.js)
Analytics and tracking tool detection
CDN and hosting provider identification
HTTP header analysis

Benefits

Research competitor technology choices
Identify technologies to target during security assessments
Understand industry standard tech stacks
Plan integrations based on known technology

Why Use Irreva for Website Technology Checker — Detect What Tech a Site Uses?

Research competitor technology choices

Identify technologies to target during security assessments

Understand industry standard tech stacks

Runs 100% in your browser — files never leave your device.

No account, no sign-up, no subscription — free forever.

Works on any device: desktop, tablet, or mobile.

Frequently Asked Questions

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