MAS.Key Firefox

Download MAS.Key

Download MAS.Key (current and past versions) for Firefox
Latest Version: 2.5resigned1 Updated: 2 years ago

Ready to install?

MAS.Key is available to install from Firefox Add-ons Store and for download from this page.
View source code

Available versions

You can find the current and older versions of MAS.Key here. You can download the archived versions or inspect their source codes.

As a free user, you can download up to 3 latest versions.
Upgrade to download older versions
VersionDownloadSizeDownload countTimestamp
2.5resigned1XPI · ZIP · Source code251.92KB02024-04-25
2.4XPI · ZIP · Source code246.88KB02018-07-30
2.5resigned1 251.92KB
2024-04-25 · 0 downloads
2.4 246.88KB
2018-07-30 · 0 downloads

Install XPI file

An XPI file, short for "XPInstall," is a compressed file format used primarily by Mozilla applications, like Firefox and Thunderbird, to distribute and install add-ons or extensions. These files are similar in function to CRX files for Chrome but cater to the Mozilla ecosystem.
  • Simply drag-and-drop the XPI into Firefox to install the add-on.

Install ZIP file

  • Download the MAS.Key ZIP file.
  • In Firefox browser, go to about:addons to open Add-ons Manager
  • Click on ⚙, Install Add-on From File
  • Select the MAS.Key ZIP file from step 1. MAS.Key is now installed on your browser.

Best MAS.Key Alternatives

Here are some Firefox add-ons that are similar to MAS.Key: