Tab Lautstärke Booster, from Mquadrat, is a Firefox extension that raises the audio level of individual browser tabs for users who encounter quiet video or stream audio. It surfaces a compact control in the browser interface so you can change a tab's playback level without opening external mixers. The extension emphasizes a minimal, privacy-minded approach and targets desktop Firefox users who want an in-browser, low-friction way to make soft media audible.

What the extension changes about in-browser audio

Tab Lautstärke Booster acts directly on a tab's output,

How much fine-grained control it gives over each tab

The extension provides granular, continuous adjustment rather than fixed presets, so users can set intermediate levels to match specific media. Controls are accessible from the popup and affect only the selected tab, which supports different loudness across open pages. The simple control surface does not expose automation, scheduling, or profile storage, so repeated configurations require manual re-adjustment.

Whether the tool respects privacy and fits desktop setups

The developer built the extension with a privacy-first stance, detailing no tracking, no cookies, and no special browser permissions. That architecture keeps the code surface small and avoids background data collection. Compatibility is scoped to desktop Firefox and the extension reports a lightweight footprint with no background trackers, making it suitable for users who prioritize limited access and clear permission boundaries.

A focused utility for privacy-minded users who need louder browser audio

The extension is a narrowly focused, low-risk option for desktop Firefox users who need an in-browser volume adjustment without expanding browser permissions. It suits people who prefer a single-purpose tool rather than a broader audio mixer. Users requiring system-wide mixing, automation, or cross-browser availability should evaluate other utilities that cover those scenarios.