How can I tell what technology a website is built with?

ZaxisMedia's free Technology Stack Detector identifies a website's CMS, frameworks, analytics, and hosting technology from just its URL. Enter any domain for an instant report, no signup needed.

What technologies can it detect?

CMS platforms (WordPress, Shopify, Wix…), JavaScript libraries and frameworks (jQuery, React, Vue, Angular, Bootstrap, Tailwind), analytics and tracking (Google Analytics, GTM, Meta Pixel, Hotjar, Clarity), fonts (Google Fonts, Typekit) and server/CDN tech (Cloudflare, Vercel, Netlify…).

How accurate is the detection?

Detection is based on public HTML and header fingerprints, which are reliable for popular tools. Heavily customized or bundled code can hide signatures, so results are best-effort rather than exhaustive.

Can it detect backend technologies like PHP or Node.js?

Only when the server reveals them (e.g. an X-Powered-By header). Most production sites hide backend details, so the report focuses on what is verifiable.

Why would I check a competitor's tech stack?

To benchmark performance choices, discover which analytics and marketing tools they use, or shortlist technologies for your own rebuild, all from public data.

Is this the same as BuiltWith or Wappalyzer?

It covers the same idea, fingerprint-based technology detection, as a free, no-sign-up tool focused on the most common web technologies.

TECHNOLOGY DETECTION TOOLS · FREE ONLINE TOOL

Technology Stack Detector

Reveal the full tech stack behind any websiteFew questions come up more often in web work than: what is this site built with? Enter any URL and get a full profile across five categories, server and CDN, CMS, frontend frameworks, analytics, and fonts, each backed by evidence.

✓ Free to use✓ No sign-up✓ Ready in your browser

// TECHNOLOGY STACK DETECTOR · GET STARTED

Use Technology Stack Detector

Reveal the full tech stack behind any website

// TECHNOLOGY STACK DETECTOR · HOW IT WORKS

How to use the Technology Stack Detector

Enter website URL

Enter the website URL (e.g. https://example.com).

Detect stack

Click "Detect stack".

Browse results

Browse the results grouped by server, CMS, frontend, analytics and fonts.

// TECHNOLOGY STACK DETECTOR · ABOUT THIS TOOL

About the Technology Stack Detector

Every website broadcasts its technology choices in its HTML and headers. The Technology Stack Detector fetches a page and matches fingerprints across five categories, server and CDN, CMS, frontend frameworks, analytics, and fonts, to build a complete profile. It is the fastest free way to answer "what is this site built with", whether you are researching competitors, auditing a client site, or choosing tools for your own project.

Where it helps most

Three ways the full picture gets used.

Benchmark rivals

Competitor researchers benchmark the full picture: which analytics and marketing tools a rival runs, which CDN they trust, which framework their storefront uses.

Brief new clients

Agencies auditing a new client's site get the lay of the land in one scan before they quote anything at all.

Choose proven stacks

Builders choosing their own stack treat the fastest sites in their niche as a dataset, picking technologies proven in the wild rather than hype.

Study real sites

Students and junior developers use it as a study tool, reverse-engineering admired sites into concrete reading lists for faster learning.

Honest blind spots

What stays hidden, stated plainly.

Five categories covered

Each report spans five categories: the server and CDN layer, the CMS, frontend frameworks and libraries, analytics and tracking pixels, and fonts.

Backends hide

Backend languages only appear when the server reveals them through something like an X-Powered-By header; most production sites hide those details.

Bundling masks names

Heavily customized or bundled code can mask library names, though what the page declares publicly still shows up grouped and readable.

Technology Stack Detector: built for trust

Fingerprint-based detection from public page data only. Free, no signup, no browser extension, no private probing.

// TECHNOLOGY STACK DETECTOR · COMMON QUESTIONS

Technology Stack Detector FAQs

What does a full technology stack report include?

Five categories: the server and CDN layer, the CMS, frontend frameworks and libraries, analytics and tracking pixels, and fonts. Each item comes with the evidence that identified it.

How is this different from checking the CMS alone?

Can it detect backend languages like PHP or Python?

Why do agencies run this on client sites?

Is this the same idea as Wappalyzer or BuiltWith?

tools-guide

Technology Stack Detector: Reveal Any Website's Tech Stack

Discover the technology stack behind any website in seconds. Our free Technology Stack Detector uncovers CMS, frameworks, hosting, and analytics instantly.

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