Technical SEO / Competitive Research
Website Technology Stack Detector
See what a site is actually built on — CMS, e-commerce platform, SEO plugin, page builder, CDN, cache layer, analytics and more — from its live HTML and response headers, with the exact evidence for every finding.
Fetches the homepage once and inspects its HTML and HTTP response headers — no crawling, no login required.
What this tool checks
Every site leaks clues about what it runs on: a meta generator tag, a CDN header, a JavaScript global, a session cookie name, a script path. This tool fingerprints a live page against a signature library covering CMSes, e-commerce platforms, JS frameworks, SEO plugins, page builders, CDNs, web servers, caching layers, analytics tools, support widgets, payment processors and bot-protection services — then explains what each detected technology means for SEO.
Why this matters for SEO
Knowing a site's stack tells you what is actually possible for it. A WordPress site running Yoast has different sitemap and meta-tag behaviour than one running Rank Math. A Shopify store has structurally different canonical and pagination issues than a hand-built React app. Before auditing a competitor, migrating a client, or diagnosing a rendering problem, knowing the stack saves guesswork.
How confidence is graded
Every match is backed by real evidence, never a guess. A technology is marked Confirmed when two or more independent signals agree (for example, a script path AND a matching HTTP header). A single matching signal is marked Likely — still solid evidence, just from one source instead of two. Expand any result to see exactly which signal fired.
Categories covered
CMS & site builders
WordPress, Drupal, Joomla, Wix, Squarespace, Webflow, Ghost.
E-commerce platforms
Shopify, WooCommerce, Magento, BigCommerce, PrestaShop.
SEO plugins & page builders
Yoast SEO, Rank Math, All in One SEO, Elementor, Divi, WPBakery.
Infrastructure & marketing tools
CDNs, web servers, caching layers, analytics, support widgets, payments and bot protection.
Frequently asked questions
Is this the same as Wappalyzer or BuiltWith?
Same idea — passive fingerprinting from the page a browser would see — but a much smaller, SEO-focused signature set. It checks one live fetch of the homepage against signatures for the technologies that actually change how a site behaves for search: CMS, SEO plugin, e-commerce platform, CDN, cache layer and JS framework.
Why does it only check the homepage?
A single fetch keeps the tool fast, predictable and light on the target server, and the homepage is almost always representative of the whole site's stack — the same CMS, theme, plugins and CDN serve every page. If a site genuinely mixes stacks (a legacy blog on WordPress next to a headless storefront), run this tool against each URL separately.
Can a site hide its technology stack from this tool?
Yes — removing generator meta tags, renaming default asset paths and stripping identifying headers all reduce or eliminate what this tool can see. That is good hardening practice regardless: it also denies the same fingerprinting to anyone scouting the site for known vulnerabilities in a specific CMS or plugin version.
Why does it say "Likely" instead of "Confirmed" for some results?
Confirmed means two or more independent signals agreed — for example a script path and a matching cookie. Likely means only one signal fired. Both are real matches, not guesses; Likely results just rest on a single piece of evidence instead of two, so treat them as strong hints rather than certainty.
Does this tool store the URLs I check?
No page content is stored. The scan runs live for your request only; see the site privacy policy for the general logging that applies to every tool on this domain.