Developer Tools
UUID v4 Generator
Create one or many UUID v4 identifiers with secure randomness.
Browser processing
Use the Web Crypto API to calculate a hexadecimal digest locally and download a simple checksum record.
Text and files are hashed on your device.
No. The browser reads it locally and passes the bytes to Web Crypto.
SHA-256 is widely used for general integrity checks; use a specific algorithm when another system requires it.
Developer Tools
Create one or many UUID v4 identifiers with secure randomness.
Browser processing
Developer Tools
Encode UTF-8 text or decode Base64 and Base64URL safely.
Browser processing
Developer Tools
Validate, pretty-print, minify and sort JSON with useful errors.
Browser processing
Private by design. Text and file bytes are passed directly to the Web Crypto API on this device.
Any local file type is accepted up to 32.0 MB.
Lowercase hexadecimal is ready to compare with another trusted checksum.