Developer Tools tools

Encode, decode, format, and inspect for developers.

Developer Tools tools

JSON Formatter & Validator

Free online JSON formatter and validator: validate syntax, pretty-print with 2/4/8-space indentation, and minify JSON in your browser — no upload needed.

UUID Generator

Generate random UUID v4 or time-based v1 GUIDs online in bulk — up to 100 per batch with one-click copy. Free, instant, no sign-up.

YAML Validator

YAML validator and YAML to JSON converter — paste either format, see errors with line numbers as you type, then convert to JSON or YAML in one click.