Umbra EQ — Equalizer & Bass Boost

Give any tab its own equalizer. Boost bass, tame harsh audio, and save presets. Everything stays on your computer.

Umbra EQ adds a real equalizer to any browser tab. • 11-band parametric EQ — drag the response curve to boost or cut any frequency, live, while the audio plays, with a spectrum analyzer behind it so you see exactly what you are shaping. • One sound on every tab — set the EQ once and it plays on every tab you turn it on for. You just edit what you hear. • Site rules — override the global sound on the sites you choose, by an address pattern (for example, one rule that covers a movie site and all of its mirrors). • Per-tab EQ — each tab still gets its own chain, so a movie tab and a music tab can sound different at the same time. • Works on Netflix, Spotify, and other streaming sites where audio EQ extensions often go silent. • Presets — save your own, and share your presets or rules with a single copy-paste code (or an export file). • Master volume boost — go past 100% when a video is too quiet. One-click Bass Boost. • Русский and English interface, four themes and a custom accent color. • Everything runs on your computer. Umbra doesn't record or send your audio, and there is no account to sign up for. How to use: 1. Play audio in a tab. 2. Click the Umbra EQ icon, then "EQ This Tab". 3. Drag the dots: left/right = frequency, up/down = boost/cut. Shift-drag changes the width (Q). Double-click a dot to reset it. 4. Your EQ plays on every tab. To give a specific site a different sound, add a rule in the Rules tab (e.g. youtube.) — one rule can cover a whole site or several at once.