What CMS Is This - Free CMS Detector

Instantly find out what CMS any website is using. Detect WordPress, Shopify, Wix, Webflow, and more.

What CMS is this? Instantly detect the CMS any website uses—WordPress, Shopify, Wix, Webflow & more. Free. What CMS is this website using? Find out in one click. What CMS Is This is a free Chrome extension from Content Toolkit that instantly identifies the content management system behind any website you visit. Open a site, click the extension, and get a clear answer—no signup, no setup. Detect popular platforms including via Content Toolkit’s CMS scanner How it works 1. Local detection scans the current tab for CMS fingerprints (fast and private). 2. If needed, we fall back to Content Toolkit’s deeper CMS detector. 3. Open the matching CMS page on Content Toolkit to explore features, alternatives, and details. Who it’s for • Developers checking a prospect’s or competitor’s tech stack • Designers researching how sites are built • Marketers and agencies doing competitive analysis • Anyone asking “what CMS is this,” “what CMS is this website using,” or “what CMS does this site use” Privacy-first Detection runs when you ask. We analyze the active tab locally first. A page URL is only sent to Content Toolkit if local detection needs a deeper scan. No browsing history is stored in the extension. Privacy policy: https://www.contenttoolkit.co/privacy/chrome-extension Web scanner: https://www.contenttoolkit.co/what-cms Stop guessing. Ask “what CMS is this”—and get the answer instantly.