Volume Booster increases audio volume directly within the webpage (up to 1000%), useful when a video or live stream is too quiet even at maximum volume. Key features

Boost volume beyond 100% (e.g., 150%, 300%, 800%)
Built-in limiter to control peaks and reduce clipping
Global or per-site settings
Instant updates while you move the slider
Compatible with most websites that use <audio> / <video> (e.g., YouTube)

Important notes

High volumes may cause distortion and could potentially damage your hearing or speakers — use with caution.
The extension does not change your system volume; it only affects the page’s audio.

Permissions

storage: saves preferences (global/per-site)
activeTab / scripting: applies changes immediately to the active tab