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Compute cryptographic hash digests from text input or uploaded files. Supports SHA-256, SHA-512, SHA-1, and MD5 entirely in the browser.
Use Cases
- ›Verifying a downloaded file matches its published checksum
- ›Generating a deterministic key from a string for caching or deduplication
- ›Producing content-addressable identifiers for data integrity checks
- ›Comparing hashes to detect whether two files are identical
Example
Input
The quick brown fox
Output
SHA-256: 5cac4f980fedc3d3f1f99b4be3472c9b 30d56523e632d7ed2a09a68c2a5b4de6
FAQ
Is SHA-1 or MD5 safe to use?
Not for security purposes — both are cryptographically broken. Use them only for non-security checksums such as cache-busting.
Can it hash files without uploading them?
Yes. Files are read locally using the File API — nothing leaves your browser.