What is a WebExtension, and how is it different from a Chrome extension?

Published November 28, 2025 | By Glenn

What is a WebExtension, and how is it different from a Chrome extension? – howtogeek.com
If you want to develop browser extensions for Chrome, Safari, Firefox, Opera, and other browsers, you’ve probably seen the phrase ‘WebExtension’ in support documents. Even though WebExtensions and Chrome extensions are (somewhat) interchangeable terms for the same technology, you do need to be aware of the differences for cross-browser extension development.

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