JSON Formatter & Validator
Free online JSON formatter and validator. Pretty-print, minify or check JSON in your browser — the payload stays on this device, not GraphicByte servers.
Les noms, instructions et contenus générés des outils peuvent être en anglais.
À propos de cet outil
Paste API responses, config files or Discord bot payloads and turn them into readable JSON, or squash them for production. Invalid JSON shows the parser error so you can fix it before you ship.
This is a client-side formatter. Nothing you paste is stored on GraphicByte. Use it when you need a quick pretty-print without opening an editor.
Comment l’utiliser
- Paste your JSON into the box.
- Choose Format, Minify or Validate.
- Copy the result if it is valid, or fix the error the validator reports.
FAQ
Does this JSON formatter upload my data?
No. Formatting and validation run in your browser. GraphicByte does not receive the JSON.
Why is my JSON invalid?
Typical causes are a trailing comma, single quotes, or a missing bracket. The error message from the browser parser is shown under the buttons.
Can I minify JSON for production?
Yes. Minify removes extra whitespace so the same object is a smaller string, still valid JSON.