Audio Controller Extension

Chrome and Firefox extension to control the volume of audio and video elements directly in the DOM, with persistent volume settings.

Description

This extension allows you to adjust the volume of any <audio> or <video> element on web pages using a slider (input range). The volume value is persistent: when you enter a page, the volume returns to the lowest value set by the user or the previously adjusted value.

Key Features:

• Global volume control per tab.
• Persistent volume even after page reloads.
• Works with any audio or video element present in the DOM.
• Versions for Google Chrome and Mozilla Firefox.

Usage

1. After installing the extension, open a page with <audio> or <video> elements.
2. Click the extension icon in the browser toolbar.
3. Adjust the volume using the slider.
4. The extension will automatically apply the selected volume to all audio and video elements on the page.
5. The volume is remembered even when refreshing the page or entering new pages with the same URL.

Permissions needed

• tabs – to interact with all open tabs.
• <all_urls> – to access audio and video elements on any page.
• scripting – to inject scripts into web pages.
• storage – to save and retrieve persistent volume settings.

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