Per-Tab Volume Control 作者: Harrison Jones

Take full control of your browser's audio. Whether a video is too quiet, poorly mixed, too loud in places, or you want better control across multiple tabs, Per-Tab Volume Control gives you the tools to fix it instantly.

🚀 Key Features
- 🔊 500% Volume Boost: Blast past the system limit. Perfect for quiet YouTube videos, low-volume podcasts, online meetings, and streams that are just too faint.
- 🎛️ Smart Audio Compressor: Automatically balances audio levels. It lowers loud explosions and boosts quiet dialogue, so you do not have to constantly reach for the volume knob.
- 🔇 Mute, Mono and L/R Balance: Instantly mute the current tab, force mono audio, or shift sound left and right directly from the main popup.
- ⌨️ Keyboard Shortcuts: Adjust volume, reset volume, mute or unmute, and toggle compressor on the active tab without opening the popup.
- 🎯 Cross-Tab Audio Control: Manage volume, mute, and compressor settings for all tabs with active audio from one convenient panel.
- 🌍 Global Audio Defaults: Set Compressor and Mono defaults for newly opened or reloaded pages, and use Global L/R Balance across open tabs and new pages while enabled.
- ✅ Per-Tab Isolation: Adjust one tab without affecting the others. Listen to music in the background while watching a tutorial at a different volume.
- 🌐 Broad Compatibility: Works on most websites with HTML5 audio and video, including YouTube, Twitch, Spotify, Netflix, and more.
- 🔒 Privacy First: Runs 100% locally on your machine. No tracking, no data collection, no ads.

💡 How to Use the Audio Compressor
Think of the compressor as an automatic volume assistant. It smooths out the difference between the loudest and quietest parts of a video, making quiet dialogue easier to hear without being blasted by sudden loud sounds.

Turn it On: Toggle the Compressor switch in the popup.

Threshold (Sensitivity):
- Lower sensitivity (for example, -10dB): Compression only kicks in for the loudest peaks, leaving most audio untouched.
- Higher sensitivity (for example, -40dB): Compression reacts to much more of the audio, helping with whispering dialogue or inconsistent podcast levels.
- Default (-18dB): A balanced starting point for most content.

Ratio (Strength):
- Low (2:1): Gentle, subtle leveling with a more natural sound.
- Medium (6:1 - Default): Balanced compression for everyday listening.
- High (12:1): Strong limiting that pulls loud and quiet sounds closer together. Great for late-night watching.

🔒 Privacy and Permissions
This extension prioritizes your privacy. It runs 100% locally on your machine and does not collect, store, or transmit any browsing data.

Why "Access your data for all websites"?
You may see a permission warning asking to "Access your data for all websites". This is not used to track you. It is required for the extension's always-on features:
- Seamless Player Sync: Automatically detects media players as soon as you open a tab, helping the popup stay in sync with the page.
- Instant Control: Lets the extension work immediately without manually activating it on every tab.

Is this permission mandatory?
No. If you prefer stricter privacy, you can restrict the extension's access in your browser settings.
- If Enabled (Default): The extension works automatically on every tab.
- If Disabled: The extension becomes click-to-activate and will only work after you manually open it on that page.