Files that contain the .crx file extension are used by the Google Chrome Internet browser. Google Chrome is a browser much like the Internet Explorer browser distributed by Microsoft, but Chrome is proprietary to the Google Corporation.
The CRX files that are used by the Chrome browser contain plug-in files, also referred to as Google Chrome extension files. These files are installed onto a user's Google Chrome browser application in order to provide the user with additional features, such as custom browser skins and interactive browser functions.
CRX files are often distributed in a compressed file format, making them more manageable to distribute and download from the Internet. The files are usually compressed using Zip compression technology.
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File.org aims to be the go-to resource for file type- and related software information. We spend countless hours researching various file formats and software that can open, convert, create or otherwise work with those files.
If you have additional information about the CRX file format or software that uses files with the CRX suffix, please do get in touch - we would love hearing from you.