Simple JavaScript Injector

This addon creates a small popup that lets you paste some JS code and inject it into the page you are currently seeing.

Simple JavaScript Injector is available to install from Firefox Browser Add-ons and for download from this page. It has 280 daily users The latest version is 1.1, and it was published 2 years ago.

View source code

Install from Firefox Browser Add-ons

Total download count: 0 (Only count downloads from Firefox-Stats)

All available versions

You can find the current and older versions of Simple JavaScript Injector here. You can download the archived versions or inspect their source codes.

As a free user, you can only download the latest version.

Upgrade to download older versions

Version	Download	Size	Download count	Timestamp
1.1	XPI · ZIP · Source code	71.45K	0	2022-12-26
1.0	Paid users only	68.90K	0	2021-06-24

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 Simple JavaScript Injector ZIP file
In Firefox browser, go to about:addons to open Add-ons Manager
Click on , then select Install Add-on From File
Select the Simple JavaScript Injector ZIP file from step 1. Simple JavaScript Injector is now installed on your browser.