BoostMate — Volume Booster & Speed Controller

Boost volume up to 500%, adjust playback speed up to 16x, and enhance dialogue on supported websites.

BoostMate helps you adjust audio volume and playback speed on supported websites. FEATURES • Volume control from 0% to 500%, with quick presets. • Playback speed from 0.25x to 16x. • Clear Audio emphasizes speech frequencies and applies compression to balance loud sounds. • Save preferences for the current tab, a website, or all tabs. HOW TO USE Open a webpage with audio or video, click BoostMate, and adjust the controls. Click the webpage if audio processing needs a user interaction. Reload existing webpages after installing or updating the extension. SETTINGS SCOPE Website and global preferences are stored locally. Tab preferences last for the browser session. Choosing website scope replaces tab overrides for that website; choosing all tabs replaces existing website and tab overrides. COMPATIBILITY Boost above 100% and Clear Audio are available for supported same-origin media. Cross-origin, protected, and stream-object media retain native volume control up to 100%. Playback speed depends on the media player. Browser-internal and other restricted pages are unsupported. Audio results vary by source and output device. PRIVACY Audio processing happens locally. BoostMate does not send personal data or browsing history to servers and contains no analytics or remote fonts. Saved website preferences include the website hostname and your chosen settings, stored locally in your browser.