Website Tech Detector — What Is This Site Built With?
Free website technology checker: find the CMS, framework, e-commerce platform and analytics any site uses — WordPress, Shopify, React, Next.js and more.
How to use the Website Tech Detector
- 01Enter the website url
- 02Click "Run Website Tech Detector" — it's free and instant
- 03Review your results on screen and download the PDF/Excel report
What is the Website Tech Detector?
This tool fingerprints a website from its HTML, scripts and response headers to identify the technologies behind it: the CMS (WordPress, Shopify, Wix and others), JavaScript frameworks (React, Next.js, Vue), server software, CDN, analytics and marketing tags.
Why it matters for SEO
Knowing a competitor’s stack shows you what is working in your niche, helps agencies qualify leads, and helps developers estimate a migration. On your own site it is a quick inventory of every third-party script loading on your pages — each one a potential speed and privacy cost.
How to read your Website Tech Detector results
Detected technologies are grouped by type. Detection relies on public fingerprints, so heavily customised or server-rendered sites may reveal less. Cross-check analytics and tag-manager findings with the Page Speed Analyzer to see how many scripts each page loads.
Expert tips
- Audit your own site for forgotten tracking scripts.
- Compare the stacks of the top three competitors in your niche.
- Use Website Lookup for hosting, IP and DNS details alongside the stack.
- Remove technologies you no longer use to speed up the site.
Limitations
Checks only the single URL you enter, as our server fetches it. It does not crawl the whole site, run JavaScript, or see pages behind a login.
Why use our Website Tech Detector?
- Completely free — use Website Tech Detector as many times as you want
- No login or registration needed to see results
- Download the report as PDF or Excel with a free account
- Works on any device — desktop, tablet or mobile