Security & Privacy
🔒 Your data stays on your device
Hash & Checksum Generator
Calculate cryptographic SHA-256, SHA-512, SHA-384, SHA-1, MD5, and HMAC hashes client-side with file drop support.
File Processing
Cryptographic Hash Outputs 100% Client-Side WebCrypto
High-Performance Client-Side Hashes
Calculate cryptographic message digests and file checksums with zero server round-trips. By leveraging the modern W3C Web Cryptography API, hashing operations execute at near-native speeds.
Supported Algorithms
- SHA-256 / SHA-512: Modern NIST cryptographic hash standard for data integrity and security.
- SHA-384 & SHA-1: Standard secure hash algorithms for verification against legacy systems.
- MD5: Classic 128-bit checksum algorithm commonly used to verify file download integrity.
- HMAC (Hash-based Message Authentication Code): Compute keyed-hash authentication codes with custom secret keys.
Key Capabilities
- ✓ Hardware-accelerated standard Web Crypto API hashing for SHA-256, SHA-512, SHA-384, SHA-1
- ✓ MD5 checksum generation and HMAC message authentication code support
- ✓ Local file checksum verification with drag-and-drop support up to 50 MB
- ✓ Hex and Base64 output encodings with one-click copy
- ✓ Zero network traffic: cryptographic hashing executes 100% in your local browser sandbox
Frequently Asked Questions
Are my files or passwords uploaded to generate the hash?
No. The browser's native window.crypto.subtle engine reads file chunks locally and calculates cryptographic digests without any outbound network calls.
Which algorithm should I use for security?
For secure hashing and password storage, SHA-256 or SHA-512 is recommended. MD5 and SHA-1 are provided for legacy integrity and file checksum verification.