TechStack Checker

The TechStack Checker inspects a public URL and returns the technologies running behind it, grouped into categories you can scan in a couple of seconds.

What it detects

The tool surfaces signals from HTML, response headers, inline scripts, and known fingerprints. Typical categories:

• CMS: WordPress, Shopify, Drupal, Webflow, Ghost
• JavaScript frameworks: React, Vue, Next.js, Nuxt, Svelte
• UI / CSS: Tailwind, Bootstrap, Material UI
• Analytics & tag managers: Google Analytics, Plausible, GTM, Segment
• Hosting & CDN: Vercel, Netlify, Cloudflare, AWS CloudFront
• Marketing pixels: Meta, TikTok, LinkedIn, Pinterest
• Payments: Stripe, PayPal, Shopify Payments
• Server / runtime: nginx, Apache, Cloudflare Workers

A site can show up under many categories. That is expected and useful.

How to read the results

Each card is a category. The badge shows how many technologies were detected in it. Tap an external-link icon next to a technology to open its homepage.

The "+N more" suffix appears when a category has more than 14 hits, which is common for tracking-heavy marketing sites.

What it does not do

• No login-walled detection. The tool only sees what an anonymous visitor sees. Tech used inside an authenticated dashboard won't show up.
• No confidence score in the UI. A tech listed here was identified by at least one signal. False positives are rare but possible, especially on heavily customised themes that mimic a popular CMS.
• No version numbers. We deliberately don't surface software versions to keep the tool useful for casual research without becoming a recon aid.

When to use it

• SEO and competitive research: what stack runs a competitor site
• Sales prospecting: does this lead use Shopify or a specific analytics vendor?
• Security context: combine with a scam URL check to understand both the tech and the trust signals of a domain
• Developer curiosity: figuring out how a site you like was built

Related

• Run a full scam URL check on the same domain to pair tech detection with trust scoring
• Detected tracking pixels often correlate with the trackers we surface on scan result pages