codeforces-calendar

Privacy Policy

Codeforces Calendar is a Chrome extension that syncs upcoming Codeforces contests to Google Calendar.

This extension does not collect, store, or transmit any personal data to the developer or any third party.

The extension requests access to your Google Calendar solely to create and update contest events on your behalf.
Your Google account credentials are never seen or stored by the extension. Authentication is handled entirely by Chrome and Google’s OAuth 2.0 service.
Your selected calendar preference is stored locally in chrome.storage.sync, which is managed by Chrome and synced to your own Google account.

The extension communicates directly with the following services on your behalf:

Google Calendar API — to create or update calendar events.
Codeforces API — to fetch contest details (public, unauthenticated endpoint).

No data is sent to the developer’s servers. There are no analytics, tracking, or advertising integrations.

If you have any questions, open an issue on the GitHub repository.

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