Volume Booster Tab
An open-source extension that boosts the volume of any browser tab, with a limiter.
Why it's a strong pick
Volume Booster Tab helps when one tab plays too quietly. It is open source under AGPL-3.0, and its code is public on GitHub. The Chrome version uses Manifest V3, Chrome's current extension format. It is a very new project from one maintainer, with several releases in one day on 30 September 2026. We say so below.
What it does
The repo describes it as a way to "boost any tab's volume up to 600%, with a limiter, equalizer and channel balance." You raise the sound of the current tab, and the other tabs stay as they are.
Key features
- Boost up to 600%. Set the level for one tab.
- Limiter. It helps hold the sound in check at high gain.
- Equalizer presets and channel balance. Shape the sound and shift left or right.
- Remember a site. It stores a site only when you tick "Remember this site".
- Settings export. Save your settings.
- DRM video. A release title says DRM video can be boosted.
- Several browsers. The repo builds for Chrome, Edge, Firefox, Opera and Safari.
Who it's for
Volume Booster Tab is for people whose tabs play too quietly, such as calls, lectures or old videos. It suits anyone who wants the boost, a limiter and a basic equalizer in one tool. If you want a full 11-band equalizer, look at the other picks in this guide.
What permissions does Volume Booster Tab ask for?
Its permissions come from the repo's build script, so we cannot list them with confidence: check the install prompt. The script for the Chrome version asks for storage, webNavigation, tabCapture and offscreen, plus access to http and https sites. It deliberately does not ask for tabs or activeTab.
Does Volume Booster Tab collect my data?
Its PRIVACY.md, dated 30 September 2026, and its README say: "The extension collects nothing, sends nothing, and makes no network requests at all." A site preference is stored on your device only if you tick Remember this site. This is the developer's own statement, not an audit.
How mature is Volume Booster Tab?
It is brand new. Versions 0.3.0, 0.4.0 and 0.5.0 were all released on 30 September 2026. A one-person project that moves this fast can change how it works from week to week. Read the release notes before you update, and expect rough edges.
Is a 600% boost safe for my speakers and ears?
It can be harsh. A big boost can distort or clip the sound and may harm speakers or hearing. Start low, raise the level a little at a time, and keep the limiter on. Turn it down if the sound crackles.
FAQ
Is Volume Booster Tab open source? Yes, under AGPL-3.0.
Does it work in browsers other than Chrome? The repo builds for Chrome, Edge, Firefox, Opera and Safari. We checked the Chrome version only.
Does it remember my settings? Only for a site where you tick "Remember this site".
Good to know
Because the project is so new, keep a second option ready. If a boost sounds bad, lower it before you blame the video. High gain is the most common cause.
Other media tools to compare
Volume Booster Tab is one of 4 picks in our media tools guide:
- Video Speed Controller: change playback speed on any HTML5 video or audio.
- Umbra EQ: give each tab its own 11-band equalizer and bass boost.
- Ruffle: play old Flash content with an open-source Flash Player emulator.
This is a third-party extension, not built or maintained by Xplorekit. We link to the official Chrome Web Store listing — install and permissions are entirely between you and the extension's own publisher.