Sites Info

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

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.

Get the Firefox add-on.

Get the Google Chrome extension.

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Sites with recent Technology Changes
Conti.nc switched from OVH to Hostinger
Erne.es switched from Telefónica Group to Microsoft
Carpintero-a-domicilio-mon.com switched from Let’s Encrypt to GlobalSign
Dealsaver.net switched from Inline CSS to Embedded CSS
Westendtheatre.com switched from SiteGround to Cloudflare
Palenquepachuca.com switched from Network Solutions to Newfold Digital
Newenglandhkfest.com switched from WordPress to Wix and from PHP to Scala and from Hostinger to Wix and from Hostinger to Google and from External CSS to Inline CSS and from Strong ETag to Weak ETag and from QUIC to HTTP/2
Arenaoflaipuli.com switched from Microsoft to Amazon and from JSON-LD and Microdata to Open Graph and Twitter/X Cards and from India to United States
Celticmusik.com switched from Let’s Encrypt to GlobalSign
Mashonacollections.com switched from GlobalSign to Let’s Encrypt

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