# Shaker — Privacy Policy

Last updated: 2026-05-14

Shaker is a Chrome extension that visually shakes the current web page in

response to the bass frequencies of audio or video playing in the active tab.

## Data we collect

• None. Shaker does not collect, transmit, sell, or share any personal

information, browsing history, page content, or audio data.

## How audio is processed

Audio analysis happens entirely on your local device. Shaker uses the

browser's Web Audio API (and, when you enable "Boost" mode, the

chrome.tabCapture API via an offscreen document) to read frequency-domain

information from the audio playing in the current tab. The audio stream is

never recorded, saved, or sent to any server. It is read frame-by-frame,

analyzed for bass energy, and immediately discarded.

## What is stored

Two user preferences are stored using Chrome's built-in chrome.storage.sync:

• enabled — whether Shaker is turned on
• sensitivity — the value of the intensity slider

These settings sync between your own Chrome installations if you are signed

into Chrome. They are never accessible to us or to any third party.