Free online tool
What is this website built with?
Enter a website address to see its CMS or website builder, JavaScript framework, analytics, hosting and CDN. Free, no account, results in a few seconds.
How it works
- 1
Enter an address
Type a domain like shop.com or paste a full link to any page.
- 2
We read the page
The checker downloads that one public page and its HTTP headers on our server.
- 3
See the stack
Scripts, meta tags, cookies and server headers are matched against 90+ known technologies.
What it detects
- CMS: WordPress, Drupal, Joomla, Ghost, 1C-Bitrix
- Website builders: Wix, Squarespace, Webflow, Framer, Tilda
- Stores: Shopify, WooCommerce, Magento, BigCommerce
- Frameworks: Next.js, Nuxt, React, Vue, Angular, Svelte, Astro
- Analytics and tags: Google Analytics, Tag Manager, Yandex Metrica, Hotjar
- Infrastructure: Cloudflare, Vercel, Netlify, nginx, Apache
What a website checker cannot see
Only what reaches the browser can be detected. Databases, back-end languages behind a proxy and private admin tools leave no trace in the page. Some sites also hide version numbers or block automated requests, so treat an empty result as "not visible", not "not used".
Frequently asked questions
How do I find out what a website is built with?
Enter its address above. The checker downloads the page and compares its scripts, meta generator tag, cookies and server headers with signatures of more than 90 technologies, then groups the results by type.
Is the website technology checker free?
Yes. It is free, needs no account and has no daily limit for normal use. Results for the same address are cached for one hour.
Why is a technology I know about missing?
The tool checks one page and only what the browser receives. Server-side software, technologies loaded only after a login or a click, and sites that block bots may not show up.
Do you store the sites I check?
No. We do not keep a history of checked addresses. The only copy is a temporary cache of the result for one hour, so repeat checks are fast.
Built and maintained by Georgii Dolganov, developer of Web Technology Detector.