Better Volume Booster by zWolfrost

Free and open-source volume booster that remembers your choices.

4.5 (47 reviews)

5,702 Users

You'll need Firefox to use this extension

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About this extension

Have you ever had that issue where a volume booster add-on would just forget what volume did you set it to on a page? No? Well, I have, and it's quite frustrating. That's why I created this add-on.

This is a simple free & open-source add-on that allows you to boost the volume of any* page and will (thankfully) remember the volume you set it to.

*Its only (known) limitation is that it can't boost the volume of webpages which play DRM-protected content using JavaScript, such as Netflix and Spotify.

For information about how to use the extension and technical details, read the README.md file on its GitHub page

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Developer comments

From v1.8.0, I made it possible to use the extension without necessarily enabling the "Access your data for all websites" permission. It is, however, very encouraged to enable it, as it makes boosting audio less troublesome.

Rated 4.5 by 47 reviewers

Release notes for 1.15.0

Added an hostname-specific option to preemptively reload media elements.
Fixed a bug where the local volume multiplier would not work.

Better Volume Booster by zWolfrost

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