Website Tech
Stack Detector
Find out what any website is built with: the framework, shop system, analytics and hosting it runs on. A free, instant website tech-stack checker, explained in plain English.
Free to use · no sign-up · 3 shared checks per 24 hours
Concerned about the PHP & Node.js security issues? Run the free vulnerability check.
Detect The Stack
Enter any public website URL to reveal the technology behind it.
What the scan detects
The Stack Detector fingerprints 60+ web technologies across eight categories: the JavaScript framework, CMS or site builder, e-commerce platform, CSS, analytics tags, hosting and more. A sample of what it finds:
Frameworks
React · Next.js · Vue · Angular · Svelte
CMS & Builders
WordPress · Wix · Squarespace · Webflow
E-commerce
Shopify · WooCommerce · Magento
Design & CSS
Tailwind · Bootstrap · Material UI
JavaScript
jQuery · GSAP · Swiper · Alpine.js
Analytics & Tags
GA4 · Tag Manager · Meta Pixel · Hotjar
Hosting & CDN
Cloudflare · Vercel · Netlify · AWS
Server & Language
PHP · ASP.NET · Node · Nginx
Why a Website Technology Checker Is Useful
Knowing which software a site uses can help when planning updates or a redesign. A technology check on its own cannot tell you whether the site is fast or secure.
Speed, SEO & cost
The software used affects maintenance, available features and running costs. We can explain the options if your current setup no longer does what you need.
How the detection works
We read the page's public HTML, response headers and cookies and match them against fingerprints for popular frameworks, CMS platforms, e-commerce systems, CSS libraries, analytics and hosting, the same approach as Wappalyzer and BuiltWith, and free.
Change your stack
Stuck on a slow platform or a website builder you have outgrown? IT Boffins rebuild and migrate sites onto whatever stack fits the goal, protecting your content, URLs and search rankings along the way.
Tech stack detector FAQ
What is a website tech stack?
A tech stack is the combination of software a website is built and run with: the framework (such as React or Next.js), the CMS or builder (such as WordPress, Shopify or Wix), the styling (such as Tailwind or Bootstrap), the analytics tags, and the hosting or CDN. Knowing the stack tells you how flexible, fast and future-proof a site really is.
How does the Stack Detector work?
It loads the public version of the page, reads the HTML source, response headers and cookies, then matches them against signatures for popular technologies, the same fingerprinting approach used by tools like Wappalyzer and BuiltWith. It only ever looks at code that is already public, and never signs in or changes anything.
Can you change or migrate my website to a different stack?
Yes. IT Boffins rebuild and migrate sites onto whatever stack fits the goal, from a slow WordPress install to a fast custom React or Next.js build, or off a locked website builder onto a platform you fully own. We plan the move so your content, URLs and search rankings are protected.
Will changing my tech stack hurt my Google ranking?
It should not, when it is done properly. A careful migration keeps your URLs, content, metadata and redirects intact, and a faster, cleaner build usually improves Core Web Vitals and search visibility rather than harming it. The risk comes from rushed migrations, which is exactly what we plan around.
How accurate is the detection?
Detection is very reliable for technologies that leave a clear fingerprint in the page or headers. Some items are marked "likely" where the signal is strong but not certain, and a heavily client-rendered or bot-protected site can hide some details. For a definitive review, ask us for a full manual audit.
How do I find out what platform or CMS a website is built on?
Paste the website address into the box above and run the scan. Within seconds it tells you whether the site runs on WordPress, Shopify, Wix, Squarespace, Webflow, Drupal or a custom framework like React or Next.js, alongside its analytics, CSS and hosting. No browser extension or sign-up needed.
Is the Stack Detector free to use?
Yes, it is completely free, with a shared fair-use limit of 3 checks per 24 hours across Stack Detector and the PHP / Node.js security checker. The server also limits requests per IP address. If you need a deeper manual review, get in touch.
Can I use this instead of Wappalyzer or BuiltWith?
It is a useful free alternative for a quick public technology check. Different detectors use different signatures and may return different levels of detail, so compare results or request a manual review before making an important migration or platform decision.
A stack check explains what a site uses. For performance, SEO, usability and security feedback, run the wider website analyser or talk to us about a rebuild.