Smart Playback Speed - Privacy Policy

gistfile1.txt

# Smart Playback Speed - Privacy Policy

**Last updated: November 2025**

## Overview

Smart Playback Speed is a browser extension that automatically adjusts YouTube video playback speed based on speech rate. This privacy policy explains how we handle your data.

## Data Collection

**We do not collect any personal data.**

This extension:
- Does NOT collect personal information
- Does NOT track your browsing history
- Does NOT transmit any data to external servers
- Does NOT use analytics or tracking services
- Does NOT share any information with third parties

## Data Storage

The extension stores the following data **locally on your device only**:

- Your preferred target WPM (words per minute) setting
- Minimum and maximum speed limits you configure
- Learned listening preferences from your manual speed adjustments
- Extension enabled/disabled state

This data is stored using Chrome's local storage API and never leaves your device.

## Permissions

The extension requires these permissions:

- **activeTab**: To access the current YouTube tab and control video playback
- **storage**: To save your preferences locally
- **Host permission (youtube.com)**: To read captions and adjust playback speed

## Caption Data

The extension reads YouTube caption/subtitle text solely to calculate words-per-minute for speed adjustment. This text is processed locally and is not stored or transmitted anywhere.

## Changes to This Policy

If we make changes to this privacy policy, we will update the "Last updated" date above.

## Contact

For questions about this privacy policy, please open an issue at the extension's support page.