merro.app

JSON Tools

Format, validate, minify, and reshape JSON.

JSON Lint

Validate and pretty-print JSON. Errors show the parser message.

JSON Tiny

Remove all insignificant whitespace — one line, smallest size.

Sort Keys

Recursively sort all object keys alphabetically.

Escape / Unescape

Escape a raw string as a JSON string literal, or unescape one back.

CSV ⇄ JSON

Convert between CSV (with header row) and a JSON array of objects.

YAML ⇄ JSON

Convert between YAML and JSON (pretty-printed).