Amplify

The problem

Browser volume controls max out at 100%, but many videos and streams are mastered too quietly. Existing volume boost extensions break in fullscreen, inject ads, or request permissions they shouldn’t need.

What we built

Amplify is a clean, privacy-respecting volume booster for Chrome and Firefox. It uses the Web Audio API to amplify any tab’s audio up to 600% — and it works in fullscreen mode, which most competitors can’t do.

How it works

• Web Audio API creates a gain node in the audio pipeline — no recording, no data collection
• Fullscreen support via proper content script injection
• Simple slider UI with preset levels (100%, 200%, 400%, 600%)
• Zero permissions abuse — only requests what it needs

Results

Live on Chrome Web Store and Firefox Add-ons. Open-sourced under MIT license on GitHub. Built as a demonstration that browser extensions can be useful without being invasive.