Download Header Override

Name: Header Override
Author: headeroverride.com

By: headeroverride.com Add-on

Download Header Override (current and past versions) for Firefox

Latest Version: 1.0.5 Updated: 2 days ago

Ready to install?

Header Override is available to install from Firefox Add-ons Store and for download from this page.

View source code

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Total downloads

Available versions

You can find the current and older versions of Header Override 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

Version	Download	Size	Timestamp
1.0.5	XPI · ZIP · Source code	51.18KB	2026-07-25
1.0.4	XPI · ZIP · Source code	48.95KB	2026-07-22
1.0.1	XPI · ZIP · Source code	36.04KB	2026-07-17

2026-07-25 · 0 downloads

XPI ZIP Source code

2026-07-22 · 0 downloads

XPI ZIP Source code

2026-07-17 · 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 Header Override ZIP file.
In Firefox browser, go to about:addons to open Add-ons Manager
Click on ⚙, Install Add-on From File
Select the Header Override ZIP file from step 1. Header Override is now installed on your browser.