1ºB Firefox

Download 1ºB

Download 1ºB (current and past versions) for Firefox
Latest Version: 2.0 Updated: 7 years ago

Ready to install?

1ºB 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 1ºB 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
2.0XPI · ZIP · Source code29.65KB02024-05-16
2.0 29.65KB
2024-05-16 · 0 downloads
XPI ZIP Source code

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

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