Generate file and text hashes
SHA-256/384/512 and SHA-1 for text or files, computed locally.
Runs on your device — never uploaded
How to generate file and text hashes
- Paste text or drop a file
Files of any size are streamed.
- Read the hashes
All algorithms compute at once.
- Compare
Paste an expected checksum to verify a download.
Frequently asked questions
Is MD5 supported?
MD5 is not offered by Web Crypto because it is broken; use SHA-256 for checksums.
Is my file uploaded?
No. Hashing runs in your browser; a 1 GB file never leaves your disk.
Are hashes case-sensitive when comparing?
No, comparison ignores case and whitespace.