// Single-page response check · initial guest allowance
Check one public page for supported CMS, ecommerce, framework, analytics, marketing, payment, infrastructure, font, and embed fingerprints in its initial response.
> Target_URL
5 free checks · No signup · Free
WordPress, Shopify, Wix, Squarespace, Webflow, Drupal, Ghost, and more.
Shopify, WooCommerce, Magento, BigCommerce, PrestaShop, LearnPress.
Next.js, React, Vue, Nuxt, Angular, Svelte, Astro, jQuery, htmx.
GA4, Tag Manager, Meta Pixel, Hotjar, Clarity, Plausible, PostHog.
Stripe, PayPal, Razorpay, HubSpot, Klaviyo, Intercom, Mailchimp.
Cloudflare, Vercel, Netlify, CloudFront, Fastly — detected from headers.
Ways to go deeper with this site:
It requests one public page, retains up to 500 KB of the initial response, and compares that text plus selected response headers with more than 80 configured signatures across nine categories. It shows the trimmed response text or allowed header value that matched.
No. Copied, historical, fallback, or unrelated text can match, and a script reference does not prove execution or configuration. Verify important findings in browser network activity, source, platform administration, vendor records, and with the people responsible for the site.
The tool does not render a browser, execute scripts, crawl other pages, inspect network requests, or read beyond the response limit. Runtime tools, server-side integrations, uncommon products, changed fingerprints, and tools used only on other pages can be missed.
No. It can match selected analytics, tag-manager, pixel, and related references in the initial response. It does not confirm that code executes, events are accurate, consent choices are honored, cookies are stored, or data reaches an account.
No. It checks an allowlist of response headers for selected CDN, hosting, proxy, and server signatures. Headers can be absent, changed, or supplied by an intermediary, and the tool cannot inspect operating systems, containers, packages, databases, private services, or deployment configuration.
Guests receive an initial quick-tool allowance. Account plans have their own current monthly or unlimited limits. The page will show the applicable limit when an allowance is reached.
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The Tech Stack Detector fetches one public page and compares up to 500 KB of its initial response plus selected HTTP headers with more than 80 configured signatures across nine categories: CMS and website builders, e-commerce platforms, JavaScript frameworks, analytics and tracking, marketing and CRM tools, payment providers, CDN and hosting infrastructure, font services, and embedded widgets. Each match includes trimmed response text or an allowed header value so you can inspect why the signature fired.
Use matches as leads when preparing a migration inventory, reviewing a vendor handoff, checking a deployment, or researching public competitor implementation patterns. A response can reveal a framework asset, provider header, or tracking reference, but it cannot confirm installation scope, active configuration, script execution, data collection, ownership, or why the organization selected a tool.
This tool does not render a browser, execute scripts, inspect network activity, crawl other pages, enumerate server packages, access platform administration, or retain more than the response limit. Runtime tools, server-side integrations, uncommon signatures, changed vendor patterns, and content beyond the read limit can be missed. False positives are also possible when copied or unrelated text matches a signature. Confirm consequential findings with browser and owner-side evidence.