About InstaHasher

A free, no-signup browser tool for computing cryptographic hashes (MD5, SHA-1, SHA-256, SHA-384, SHA-512, HMAC) of text and files. Everything happens in your browser via the Web Crypto API. The input is never uploaded.

InstaHasher is operated by Dynamic Foundries, a French SASU registered in Paris (RCS Paris 102 801 206). The portfolio includes two revenue products (FileSendX, ViewPeek) and a network of free utility tools.

Who it's for: developers verifying downloaded file integrity, sysadmins generating checksums for distribution, security practitioners doing quick hash computations.

Where to find more:

• Tool: https://instahasher.com/
• Why InstaHasher: https://instahasher.com/ai/why-us
• About Dynamic Foundries: https://dynamic-foundries.com/ai/about

Last updated: 2026-05-18.