CMS Detector

Detect what content management system (CMS) a website is using by analyzing HTML fingerprints, HTTP response headers, asset paths, and script signatures across 15+ platforms.

Detect CMS by URL

Enter any website URL. The tool will fetch the page and analyze it for CMS fingerprints.
Quick test:

About the CMS Detector Tool

This tool fetches any website URL and performs a comprehensive analysis of HTML source code, HTTP response headers, and asset path patterns to identify which content management system the site is built on. It detects 15+ CMS platforms using dozens of fingerprinting signals.

Multi-signal analysis

Combines meta tags, file paths, scripts, headers, and cookies for accurate detection.

Confidence scoring

Weighted signal system shows how reliable each detection is with a visual score.

Version detection

Extracts CMS version numbers from generator tags and asset URLs where available.

Why CMS Detection Matters for SEO

Understanding which CMS a website (including your competitors') uses can help with:

  • Competitive analysis — Know what technology stack your competitors are using and how it affects their SEO performance.
  • Migration planning — When considering a CMS migration, understanding the landscape helps you evaluate options.
  • Technical SEO audits — Different CMS platforms have different SEO capabilities and common issues. Knowing the CMS helps tailor the audit.
  • Plugin/theme research — Identifying the CMS helps you understand what plugins or themes might be in use.
  • Security assessment — Knowing the CMS version helps identify potentially outdated installations.

How CMS Fingerprinting Works

The tool uses several detection techniques:

  • Generator Meta Tags — Most CMS platforms include a <meta name="generator"> tag that explicitly names the platform and version.
  • File Path Patterns — Each CMS uses distinctive directory structures like /wp-content/ (WordPress), /sites/default/ (Drupal), or /components/com_ (Joomla).
  • JavaScript / CSS Signatures — Unique script names, version parameters, and CSS class naming conventions reveal the underlying platform.
  • HTTP Response Headers — Many platforms include custom headers like X-Shopify-Shop-Id, X-Generator, or X-Magento-*.
  • DOM Structure Patterns — Data attributes (e.g., data-wf-* for Webflow) and HTML structure conventions provide additional clues.

Frequently Asked Questions

This tool uses fingerprinting techniques that are highly accurate for popular CMS platforms like WordPress and Shopify. It checks multiple signals — meta tags, file paths, JavaScript assets, HTTP headers, and cookie patterns. However, some custom builds, heavily modified sites, or sites behind CDNs may not return clear signals. Results should be considered strong indicators, not absolute guarantees.
We can detect 15+ CMS platforms: WordPress, Shopify, Wix, Squarespace, Webflow, Joomla, Drupal, Magento, Blogger, Ghost, PrestaShop, OpenCart, TYPO3, Concrete5, Tumblr, and Weebly. We also detect generic signals like generator meta tags and X-Generator headers for less common platforms.
Some websites use custom-built CMS solutions with no publicly known fingerprints. Others disable generator meta tags, use security measures that block fingerprinting, or route through aggressive CDNs that strip headers. Sites built with static site generators (Hugo, Jekyll, Next.js, Gatsby) or pure HTML also won't return CMS signals.
Yes, for several platforms we attempt to extract version information from generator meta tags, script version parameters, and CSS file paths. WordPress versions often appear in the generator tag (e.g., "WordPress 6.4"), and other platforms sometimes include version numbers in asset URLs.
The tool analyzes multiple categories of signals: (1) Generator meta tags in the HTML head, (2) Distinctive file and directory paths (e.g., /wp-content/, /sites/default/), (3) JavaScript and CSS file signatures, (4) HTTP response headers (X-Generator, X-Powered-By, X-Shopify-*), (5) Cookie names and patterns, and (6) DOM structure signatures like specific class names or data attributes.
Yes. Cloudflare, Akamai, and similar services can strip or modify HTTP headers that we rely on for detection. However, HTML-based signals (meta tags, file paths, script references) still pass through CDNs unchanged, so detection usually remains accurate. In rare cases, a CDN may rewrite asset URLs, which can obscure file-path-based signals.
To reduce CMS fingerprinting: remove the generator meta tag from your theme, use a security plugin that hides WordPress paths, disable unnecessary HTTP headers, use a CDN, and avoid default asset paths. However, legitimate SEO and analytics tools often need this information, so hiding your CMS may not always be beneficial.
Detection of headless CMS platforms (Contentful, Strapi, Sanity) and static site generators (Gatsby, Next.js, Hugo, Jekyll, Astro) is limited because they typically don't leave server-side fingerprints. However, we do attempt to detect Next.js, Gatsby, and Hugo through unique script patterns and generated HTML attributes where present.
Reviewed Jun 2026 · Sources and limitations

Review details: 2026-06-10 · Marc LaClear · v1.0

Reference sources:

Known limits:

  • Checks are based on publicly fetchable HTML, response headers, and browser-side input. They do not use private Google Search Console, analytics, or ranking data.
  • Scores and warnings are diagnostic aids, not guarantees of ranking improvement or Google indexation.
  • Pages blocked by robots.txt, login walls, bot protection, heavy JavaScript, or network timeouts may return incomplete results.
  • Validate critical fixes with official Google tools such as Search Console, Rich Results Test, Lighthouse, and your own crawl data.

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