Volume Maxer is a Firefox extension that boosts audio volume on websites up to 400 percent. It provides per-tab volume controls, an audio dashboard, instant muting, dark mode, and automatic saving of site-specific settings.
In the Players & playlists space, Volume Maxer takes a focused approach. It focuses on increasing and managing inconsistent audio volume across websites and browser tabs. It is built as a consumer product for firefox users who need louder or more controllable web audio. Volume Maxer costs nothing to use. It runs on the web and embeddable surfaces.
OPM builds and maintains Volume Maxer, and it first shipped in 2025. It operates in a well-populated space: PulseGate tracks 6 similar projects. Key capabilities include Volume Boost, Per-Tab Control, and Audio Dashboard. The interface is available in 32 languages, including Czech, German, and Greek.
Summary written by a language model from the project’s public pages.
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