Per-tab volume control with up to 600% boost. Chrome + Firefox.

Clean-slate rewrite of the upstream extension. No ads, no nags. Uses a content-script WebAudio gain graph (compressor + soft-clipper + perceptual curve) instead of tabCapture, so the same code path works on both browsers with no extra permissions.

Chrome / Brave / Edge — chrome://extensions → Developer mode → Load unpacked → dist/chrome-mv3/.

Firefox — about:debugging#/runtime/this-firefox → Load Temporary Add-on → any file in dist/firefox-mv2/.

bun install
bun run dev            # Chrome
bun run dev:firefox    # Firefox
bun run check          # lint + format (ultracite)
bun run typecheck
bun test

bun run build:all      # chrome-mv3 + firefox-mv2
bun run zip:all        # zipped artifacts in dist/

Tag vX.Y.Z to trigger .github/workflows/release.yml — builds both browsers and attaches zips to the GitHub release. Store publishing is manual.

popup ──msg──▶ background ──msg──▶ content script (each tab)
 (UI)            (router)            (WebAudio gain graph)

Content script wraps each <audio>/<video> in MediaElementAudioSourceNode → GainNode → DynamicsCompressor → destination. MutationObserver catches dynamically-added media. Per-tab gain persists in browser.storage.session and is GC'd when the tab closes.

Trade-off vs. tabCapture: doesn't catch audio from page-internal AudioContext or WebRTC. Acceptable for v1.

MIT