Privacy Policy

Last updated: April 2026

Who we are

Papyrium is an independent software project. This policy covers the website papyriumlib.com and the data collected through it. For any privacy-related questions, contact us at privacy@papyriumlib.com.

What we collect

Analytics (optional)

If you accept cookies, we use Google Analytics (GA4) to understand how visitors use this site. This includes pages visited, time on site, device type, and approximate location (country/region level). Your IP address is anonymized. This data is processed by Google LLC and subject to Google's Privacy Policy. You can decline analytics cookies at any time using the banner or by clearing your browser's local storage.

Newsletter (if you subscribe)

If you submit your email address, it is stored and used only to send you updates about Papyrium — new versions, announcements, and founding discount information. Your email is never sold or shared with third parties. You can unsubscribe at any time via the link in any email we send.

Feedback and support emails

If you email us feedback or a support request, we process your email address and the contents of your message so we can respond, troubleshoot issues, and improve Papyrium.

Cookies

We only use cookies if you accept analytics. These are set by Google Analytics (_ga, _ga_*) and persist for up to 2 years. If you decline, analytics storage remains disabled and no Google Analytics cookies are set. Your preference is saved in your browser's local storage.

Third-party services

  • Netlify — hosts this website and processes newsletter form submissions. Like most websites, our hosting provider may process basic request data such as IP address, browser/user agent, requested URL, and timestamps for hosting, security, abuse prevention, and reliability. Netlify Privacy Policy
  • Google Analytics — site analytics (only if you accept cookies). Your IP address is anonymized. If you decline, analytics storage remains disabled and we do not use Google Analytics cookies. Google Privacy Policy
  • GitHub — download buttons fetch the latest release information from GitHub's public API and may redirect your browser to GitHub Releases to download the app. GitHub Privacy Statement

Data retention

Analytics data is retained for 14 months (Google Analytics default). Email addresses are retained until you unsubscribe or request deletion.

Your rights

Under GDPR and similar laws, you have the right to access, correct, or delete your personal data, and to object to or restrict its processing. To exercise any of these rights, contact us at privacy@papyriumlib.com.

We will respond within 30 days.

The Papyrium app

This policy covers the website. The current public alpha does not upload your book files, notes, or library contents anywhere — your library stays on your device. If crash reporting, diagnostics, or other telemetry are added in future versions, they will be documented here and made opt-in where appropriate.

Changes to this policy

We may update this policy as the product evolves. The date at the top of this page reflects the most recent revision.