Download ModHeader V1 ✨ by modheader.app ✅

Name: ModHeader V1 ✨ by modheader.app ✅
Author: ModHeader Inc

By: ModHeader Inc Add-on

Download ModHeader V1 ✨ by modheader.app ✅ (current and past versions) for Firefox

Latest Version: 2026.8.8.18 Updated: 11 days ago Removed

Ready to install?

ModHeader V1 ✨ by modheader.app ✅ is available for download. Be careful when installing it.

View source code

5.0

1 ratings

Total downloads

Available versions

You can find the current and older versions of ModHeader V1 ✨ by modheader.app ✅ 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
2026.8.8.18	XPI · ZIP · Source code	795.17KB	2026-08-08
2026.8.8.8	XPI · ZIP · Source code	797.90KB	2026-08-07
6.1.1	XPI · ZIP · Source code	798.71KB	2026-07-25

2026-08-08 · 0 downloads

XPI ZIP Source code

2026-08-07 · 0 downloads

XPI ZIP Source code

2026-07-25 · 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 ModHeader V1 ✨ by modheader.app ✅ ZIP file.
In Firefox browser, go to about:addons to open Add-ons Manager
Click on ⚙, Install Add-on From File
Select the ModHeader V1 ✨ by modheader.app ✅ ZIP file from step 1. ModHeader V1 ✨ by modheader.app ✅ is now installed on your browser.