Developer tool · browser-only
SHA-256 hash generator.
Create a digest from text or a local file with the Web Crypto API. Your input stays in the browser.
Develop
Hash text or a file
Your digest will appear here.
Generate a SHA-256 hash online
Use a hash generator to compare file integrity, create a repeatable fingerprint, or inspect a digest during development. You can hash text or a file without sending it to a server.
Which algorithm should I use?
SHA-256 is a common default for file checksums. SHA-384 and SHA-512 are also available. SHA-1 is included for compatibility checks and should not be used for new security designs.
Can I reverse a hash?
No. A cryptographic digest is designed to be one-way. Matching a digest is useful for comparison, not for recovering the original input.