Linux Foundation Coupons by CertDirectory.IO Firefox

Download Linux Foundation Coupons by CertDirectory.IO

Download Linux Foundation Coupons by CertDirectory.IO (current and past versions) for Firefox
Latest Version: 2.0.0 Updated: 7 months ago

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Linux Foundation Coupons by CertDirectory.IO is available to install from Firefox Add-ons Store and for download from this page.
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Available versions

You can find the current and older versions of Linux Foundation Coupons by CertDirectory.IO 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
2.0.0XPI · ZIP · Source code59.33KB02025-11-09
1.0.0XPI · ZIP · Source code42.32KB02025-11-07
2.0.0 59.33KB
2025-11-09 · 0 downloads
1.0.0 42.32KB
2025-11-07 · 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

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

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