Firefox Addons

Volume Control by debauer

Volume Control by debauer is a Firefox WebExtension for controlling media volume per tab. It changes the volume of audio and video elements on the page and can also store local website defaults, so frequently used sites start with the preferred volume automatically.

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What it does

• controls HTML audio and video volume per browser tab
• stores tab specific volume with Firefox session data
• stores website defaults locally and applies them to matching hosts
• keeps tab overrides higher priority than website defaults
• includes mute handling, saved rules and an options page
• supports export and import of the local settings
• includes a blacklist for unsupported websites

Tech

The addon is a Manifest V3 Firefox extension. A content script runs on web pages, updates media elements and injects a small page hook for Web Audio based players. The popup is used for quick tab volume changes, while the options page manages saved website rules, stored data, theme selection and the changelog.

The addon stores its data locally via Firefox extension storage and does not declare any data collection in the manifest.

Status

Works for regular HTMLMediaElement based audio and video playback and has additional Web Audio support. Some sites with custom playback stacks can still be unsupported; Qobuz is currently handled as an excluded site.