Developer tools

Fast, local tools for developers. Format JSON, generate UUIDs and secure passwords, encode Base64, and test regular expressions.

JSON Formatter

Format, minify, and validate JSON in your browser. Invalid input shows a parser error.

Test regular expressions against your text.

Generate random version 4 UUIDs.

Generate secure, random passwords locally.

Encode and decode Base64 strings.

Encode and decode URL parameters.

Calculate SHA-256, SHA-384, or SHA-512 hashes.

Add UTM parameters to campaign links.