Security and integrity
HMAC Generator
Calculate HMAC with SHA-256, SHA-384 or SHA-512 using Web Crypto.
Open tool →3 Tools
Security and integrity
Calculate hashes, HMAC, checksums and passwords locally while avoiding exposure of real secrets.
Verify message and file integrity in controlled environments.Generate random values locally for testing and your own accounts.Avoid sending sensitive content to unknown services.
Security and integrity
File SHA Checksum
Calculate SHA-256, SHA-384 or SHA-512 checksums for local files.
Open tool →Security and integrity
Password and Passphrase Generator
Create random passwords and passphrases locally using Web Crypto.
Open tool →How to choose the right tool
Start with the result you need, use fictional data whenever possible and review output before applying it to a real system. These related pages are organized so you can move from preparation to execution and validation without switching between many platforms.
Privacy and performance
The portal prioritizes in-browser processing. Tools that handle large files may use significant memory, so test with a copy and keep the original file safe.