Encoding & Hashing

4 free, browser-based encoding & hashing tools — nothing you enter here is sent to a server.

Generate SHA-1, SHA-256, SHA-384 and SHA-512 hashes from text instantly, using your browser's built-in Web Crypto API.

Generate strong, secure random passwords with customizable length and character sets using browser-based cryptographic randomness.

Test password strength with entropy analysis, crack time estimates, and security tips, all processed locally in your browser.

Generate RFC 4122 version 4 UUIDs in bulk, free and instantly in your browser. Copy single IDs or export a batch as a list.