Privacy Policy
File Transfer for Backblaze B2 (macOS) · Effective July 27, 2026
The Short Version
File Transfer for Backblaze B2 collects no data about you. The app has no analytics, no tracking, no advertising, no third-party SDKs, and no server of ours behind it. Everything the app does happens between your Mac and your own Backblaze B2 account.
Your Backblaze Credentials
To connect, you enter a Backblaze B2 Application Key ID and Application Key. These are stored only in the macOS Keychain on your Mac and are sent only to Backblaze's own API over HTTPS to authenticate your account.
Your Files
Files you upload or download move directly between your Mac and Backblaze B2. There is no intermediary server. We never see, receive, or store your files or their names. Your relationship with Backblaze is governed by Backblaze's own privacy policy.
Data Stored on Your Mac
The app stores a small amount of data on your Mac. This includes your preferences, folder permissions, and unfinished transfer state. If enabled, CSV transfer reports are saved to a folder you choose. Deleting the app and its container deletes this data.
What We Don't Do
- No analytics or usage statistics
- No crash reporting services
- No advertising or tracking of any kind
- No accounts with us. The app works with your own Backblaze account
- No selling, sharing, or transferring of data. We do not receive it
Changes to This Policy
If a future version of the app changes any of the above, this page will be updated before that version ships, with a new effective date.
Contact
Questions about privacy or the app? Get in touch.