Privacy Policy – CF Streak Tracker

Last updated: March 2026

Overview

CF Streak Tracker is a browser extension designed to help users track their daily submission streak on Codeforces. This extension respects your privacy and is built to operate with minimal data usage.



Information We Collect

This extension does not collect, store, or transmit any personal data to external servers.

The only data used by the extension includes:

• Your Codeforces username (entered by you)
• Submission data fetched from Codeforces via its public API

How Data Is Used

• The username is used solely to request submission data from Codeforces.
• Submission data is processed locally in your browser to calculate your streak.
• No data is sent to any third-party servers.

Data Storage

• If you choose to save your username, it is stored locally using your browser’s storage.
• This data never leaves your device.

Third-Party Services

This extension interacts with:

• Codeforces API (https://codeforces.com/api)

No other third-party services, analytics, or tracking tools are used.



Data Sharing

We do not:

• Sell data
• Share data
• Transfer data to external services

Permissions Justification

• Storage: Used only to save your username locally (optional)
• Host Permissions (codeforces.com): Required to fetch submission data

Security

All processing is done locally in your browser. No sensitive data is handled or stored externally.



Changes to This Policy

This policy may be updated if the extension’s functionality changes. Updates will be reflected in the “Last updated” date.



Contact

For any questions or concerns, you can contact the developer via the GitHub repository:
https://github.com/pranitdhanade-sys/CF-Streak-Firefox-