A CRX file is the extension format used for Google Chrome browser extensions. Essentially, it’s a compressed package containing all the files needed to install a browser add-on—in this case, the ZenMate VPN.
When installed via its CRX file, the extension offers several core privacy functions: ZenMate Free VPN For Chrome Zenmate Vpn Crx File
About .CRX Files: What is a CRX file and how do I extract it A CRX file is the extension format used
For ZenMate VPN, the Chrome Web Store Extension ID is: Zenmate Vpn Crx File