Download String Utilities

Name: String Utilities
Author: Kofibus

By: Kofibus Add-on

Download String Utilities (current and past versions) for Firefox

Latest Version: 3.0.1 Updated: 5 months ago Removed

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String Utilities is available for download. Be careful when installing it.

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Available versions

You can find the current and older versions of String Utilities 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	Download count	Timestamp
3.0.1	XPI · ZIP · Source code	175.58KB	0	2026-04-13
1.0.0	XPI · ZIP · Source code	14.19KB	0	2026-03-13

2026-04-13 · 0 downloads

XPI ZIP Source code

2026-03-13 · 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 String Utilities ZIP file.
In Firefox browser, go to about:addons to open Add-ons Manager
Click on ⚙, Install Add-on From File
Select the String Utilities ZIP file from step 1. String Utilities is now installed on your browser.