Download Volume Booster & Video Speed Controller

Name: Volume Booster & Video Speed Controller
Author: doppelganger

By: doppelganger

Download Volume Booster & Video Speed Controller (current and past versions) for Firefox

Latest Version: 1.6 Updated: a month ago

Ready to install?

Volume Booster & Video Speed Controller 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 Volume Booster & Video Speed Controller 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
1.6	XPI · ZIP · Source code	3.44MB	2026-05-20
1.5	XPI · ZIP · Source code	3.79MB	2026-04-24
1.4	XPI · ZIP · Source code	27.73KB	2026-04-21
1.3	Paid users only	27.44KB	2026-04-10
1.2	Paid users only	19.45KB	2026-04-09

2026-05-20 · 0 downloads

XPI ZIP Source code

2026-04-24 · 0 downloads

XPI ZIP Source code

2026-04-21 · 0 downloads

XPI ZIP Source code

2026-04-10 · 0 downloads

Paid users only

2026-04-09 · 0 downloads

Paid users only

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 Volume Booster & Video Speed Controller ZIP file.
In Firefox browser, go to about:addons to open Add-ons Manager
Click on ⚙, Install Add-on From File
Select the Volume Booster & Video Speed Controller ZIP file from step 1. Volume Booster & Video Speed Controller is now installed on your browser.