How to use the Website Technology Checker
- Enter a website address, for example
example.com. - Click Detect. The tool loads the page like a browser and reads its source, headers, cookies and generator tag.
- Over 100 signatures are matched: CMS, forum software, e-commerce, frameworks, servers, CDNs, analytics, fonts and widgets.
- Each result shows where it was found (page source, header, cookie or generator tag) and a version when available.
What it detects
| Group | Examples |
|---|---|
| CMS & site builders | WordPress, Drupal, Joomla, Ghost, Webflow, Wix, Squarespace, Framer, HubSpot CMS |
| Forums & wikis | vBulletin, XenForo, phpBB, Discourse, MyBB, Invision Community, SMF, MediaWiki |
| E-commerce | Shopify, WooCommerce, Magento, PrestaShop, BigCommerce, Stripe, PayPal |
| Frameworks | Next.js, Nuxt, Gatsby, Astro, React, Vue, Angular, Svelte, Laravel, Django, Rails, ASP.NET |
| Servers, CDN, hosting | Nginx, Apache, LiteSpeed, IIS, Cloudflare, Fastly, CloudFront, Vercel, Netlify |
| Analytics & marketing | Google Analytics, Tag Manager, Plausible, Matomo, Hotjar, Clarity, Meta Pixel, HubSpot |
How detection works
Most platforms leave fingerprints: a <meta name="generator"> tag (WordPress, Drupal, vBulletin), typical file paths (/wp-content/, /_next/), cookies (xf_session for XenForo, bbsessionhash for vBulletin) or response headers (x-vercel-id, cf-ray). The tool lists which clue it matched, so you can judge each result.
Limits: sites can hide or remove these clues, and tools loaded later by JavaScript may not appear. Sites behind strict bot protection can’t be checked. For marketing and tracking tags in depth, use the tracking tag checker; for the hosting company, Who Is Hosting.
Also searched as: what is this site built with, cms detector, wordpress checker, is this site wordpress, vbulletin detector, forum software detector, tech stack lookup, website builder detector.
Tools that pair well with the Website Technology Checker
- SEO Checker & Site Audit — Paste a URL to run up to 70 on-page SEO checks plus a full site audit: Lighthouse speed, security headers & SSL, structured data, broken links, robots.txt & AI crawlers, accessibility basics, tracking & consent, SPF/DKIM/DMARC and domain expiry — rolled up into one site score with prioritized fixes.
- WHOIS Lookup — Enter a domain to see its registrar, creation and expiry dates, domain age, status codes, nameservers and DNSSEC — or an IP address to find the network and organization that owns it.
- Page Speed Test — Run Google Lighthouse on any URL for mobile or desktop.
- MIME Type Lookup — Search 200+ file extensions and MIME types — .webp, .woff2, .webmanifest, application/wasm … — or drop a file to detect its real type from its first bytes.