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Sites Info

Find out, which technologies such as CMS, programming language, web server and hosting provider a particular website is using.

   Enter url:
   Examples: Berkeley.edu, Hrw.org, Britannica.com

Site Info API

Get programmatic access to this information via our Site Info API.

Bookmarklet

Our bookmarklet provides a convenient way to see the technologies of the sites you visit.
--> W3Techs <-- Don't click here. Drag it to your browser's toolbar or add it to your favorites bar/bookmarks by clicking the right mouse button. Then click on it whenever you visit a site whose technologies you want to know. If the concept of bookmarklets is new to you, you may read more about it on Wikipedia.

Browser Extensions

Our browser extensions work similar to the bookmarklet, but they use browser capabilities to show the current site's web technologies, so that your site visits are not interrupted.

Firefox Add-On
Get the Firefox add-on.

Google ChromeGoogle Chrome extension
Get the Google Chrome extension.



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Sites with recent
Technology Changes
Herrmann-j.de switched from IdenTrust to Let’s Encrypt
Asphalt.de switched from IdenTrust to Let’s Encrypt
Bluefieldresearch.com switched from IdenTrust to Let’s Encrypt
Coast-spas.fr switched from Nginx to Envoy and from IdenTrust to Let’s Encrypt
Bookbeachbunny.com switched from IdenTrust to Let’s Encrypt
Telekungdehumaira.com.my switched from IdenTrust to Let’s Encrypt
Cloudsystems.tech switched from IdenTrust to Let’s Encrypt
Calfor.com.br switched from Persistent Cookies to Session Cookies
Goieqioy.com switched from Germany to United States
Detour.it switched from IdenTrust to Let’s Encrypt
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