Utilify

Developer Tools

Formatters, validators, encoders, and converters for everyday development.

JSON Formatter

Format, beautify, and validate JSON online. Free, fast, runs entirely in your browser.

JSON Validator

Validate JSON syntax online with clear error messages and line numbers. Free and private.

Base64 Encoder

Encode and decode Base64 strings online. UTF-8 safe, browser-only — your data never leaves your device.

JWT Decoder

Decode JWT tokens and inspect header, payload, and signature. Runs locally — your tokens stay private.

SQL Formatter

Format SQL queries with consistent indentation and keyword casing. Supports MySQL, PostgreSQL, and standard SQL.

Regex Tester

Test regular expressions against sample text. Highlight matches, inspect groups, and toggle flags.

UUID Generator

Generate cryptographically random UUID v4 identifiers — single or bulk, instantly.

Timestamp Converter

Convert between Unix timestamps and human-readable dates. Supports seconds, milliseconds, and ISO 8601.