Website Technology Checker

How the Website Technology Checker Works

This tool analyzes publicly visible code and server responses to help identify what a website is built with. It works as a CMS, website platform, and tech stack checker, but it cannot inspect private backend code. Here's the process:

1. Enter a URL, type or paste any website address. The tool adds https:// if no protocol is specified.
2. Fetch and analyze, the checker loads the page's HTML source code and reads all HTTP response headers, including server, caching, and security headers.
3. Pattern matching, it scans for known technology signatures: specific file paths, meta generator tags, JavaScript globals, DOM attributes, cookie names, and header values unique to each technology.
4. Categorized results, detected technologies are grouped by category (CMS, Framework, Analytics, Hosting, etc.) with version numbers when available.

Why Knowing a Website's Tech Stack Matters

Understanding what technologies a website uses gives you actionable intelligence for several scenarios:

• Competitor research, see what CMS, frameworks, and analytics your competitors use. If a high-ranking competitor uses a specific setup, understanding their stack helps you evaluate your own technical decisions.
• Sales and prospecting, agencies and SaaS companies use technology detection to find potential clients. If you offer WordPress services, knowing which sites run WordPress (and which plugins they use) helps you target the right prospects.
• Security audits, outdated CMS versions, exposed server headers, and known-vulnerable plugins are all visible through technology detection. Regular checks help identify security risks before they're exploited.
• Migration planning, before moving a client to a new platform, you need to know exactly what they're running now, CMS, plugins, analytics, forms, chat widgets, and payment processors all need to be accounted for.
• Learning and inspiration, curious what stack a beautifully designed site uses? Technology detection lets you learn from sites you admire.

Combine this with the WordPress Theme & Plugin Detector for deeper WordPress analysis, or the SSL Certificate Checker to complete your site security profile. Check the site's font stack to see whether fonts are self-hosted or loaded from external CDNs, relevant for GDPR and performance. To assess the server's PHP version, use the PHP Version Checker.

Technologies We Detect

This tool identifies technologies across a wide range of categories:

• CMS & E-commerce, WordPress, Shopify, Wix, Squarespace, Webflow, Drupal, Joomla, Ghost, Magento, WooCommerce, PrestaShop, and more.
• JavaScript Frameworks, React, Next.js, Vue.js, Nuxt.js, Angular, Svelte, Astro, Gatsby, Remix, Ember.js, jQuery.
• UI Frameworks, Bootstrap, Tailwind CSS, Foundation, Material UI.
• Analytics & Marketing, Google Analytics, Tag Manager, Facebook Pixel, Hotjar, Plausible, Matomo, Microsoft Clarity, HubSpot, Intercom, Mailchimp, Brevo.
• Hosting & CDN, Vercel, Netlify, Cloudflare, AWS CloudFront, Fastly.
• Web Servers, Nginx, Apache, LiteSpeed.
• SEO & Page Builders, Yoast SEO, Rank Math, Elementor.
• Fonts, Payments & Security, Google Fonts, Adobe Fonts, Stripe, PayPal, reCAPTCHA, hCaptcha, Turnstile.

For a broader SEO audit beyond technology detection, check the Meta Tag Checker and Schema Markup Validator to ensure the site's on-page SEO and structured data are properly configured.