Privacy Policy
Last updated: August 2026
1. Introduction
Welcome to Blink ("we," "our," or "us"). We are committed to protecting your privacy and ensuring a secure experience when using our ephemeral file sharing service. This Privacy Policy explains how we collect, use, and protect your information when you use our website and Android application.
2. Information We Collect
2.1 Files
When you share a file with Blink, it is encrypted on your device before upload, so we only ever receive encrypted ciphertext. We temporarily store this encrypted data on our servers to deliver your secure link. All files are automatically and permanently deleted when the timer expires (1 to 10 minutes, 5 minutes by default). We do not retain, backup, or archive any shared content beyond this period.
2.2 Device Information
Our Android app may collect:
- Device type and model
- Operating system version
- App version
- Anonymous usage statistics
2.3 Usage Data
We use anonymous usage data to improve our service, including:
- Daily transfer quota usage (stored locally on your device)
- App crash reports
- General usage patterns
3. How We Use Your Information
We use the collected information solely for:
- Providing the ephemeral file sharing service
- Improving app performance and user experience
- Monitoring and preventing abuse of the service
- Displaying advertisements (Android app only)
4. Data Storage and Security
Your files are encrypted with AES-256 on your device before upload. Servers only ever store and transmit encrypted ciphertext, and cannot read the contents of what you share. The decryption key travels with your share link and never leaves your control.
Encrypted data is stored on secure cloud infrastructure (Cloudflare R2) with automatic deletion when the timer expires (1 to 10 minutes, 5 minutes by default). We implement industry-standard security measures to protect data during transmission and storage.
No account creation or personal identification is required to use Blink. We do not collect names, email addresses, or other personally identifiable information.
5. Third-Party Services
5.1 Advertising
Our Android app uses Google AdMob to display advertisements, including rewarded ads that grant additional transfer quota. Google may collect and use data as described in their Privacy Policy.
5.2 Cloud Services
We use Cloudflare for content delivery and storage. Cloudflare's privacy practices are governed by their Privacy Policy.
6. Children's Privacy
Blink is not intended for children under 13 years of age. We do not knowingly collect information from children under 13. If you believe a child has provided us with information, please contact us immediately.
7. Your Rights
Since we do not collect personal information and all shared data is automatically deleted when the timer expires, there is no persistent data to access, modify, or delete. If you have any concerns, please contact us.
8. Changes to This Policy
We may update this Privacy Policy from time to time. We will notify you of any changes by posting the new Privacy Policy on this page and updating the "Last updated" date.
9. Contact Us
If you have any questions about this Privacy Policy, please contact us at: