Zero Data Collection Guarantee
Privacy Policy
Last Updated: November 2026
1. Zero Data Transmission
ChecksumKit is built on a strict "Client-Side Only" architecture. When you select, drag, or drop a file into ChecksumKit, or type text into the hashing workbench:
- Your file contents and text strings never leave your web browser.
- No file is uploaded to any web server, proxy, or third-party storage bucket.
- All cryptographic calculations (SHA-256, SHA-512, SHA-384, SHA-1, MD5, CRC-32, HMAC) are performed entirely within your local browser memory via standard W3C WebCrypto APIs.
2. No Cookies, No Tracking Scripts, No Analytics
ChecksumKit does not use invasive tracking scripts, marketing pixels, or advertising beacons. We do not track your user identity, IP address, browsing behavior, or the filenames you verify.
3. Local Storage Usage
The only data written to your browser's local storage is your visual theme preference (theme: 'light' or theme: 'dark'). This preference remains solely on your device.
4. Contact Information
For inquiries regarding our privacy standards or technical architecture, you may contact: