How to Format JSON (Beautify, Validate & Convert)
Minified or hand-edited JSON is painful to read and easy to break. Formatting it adds consistent indentation and flags syntax errors, so you can spot problems before they hit your code. Kitolity does it in your browser — your data is never uploaded.
The tool
JSON to YAML & CSV Converter
Step by step
- Open the JSON toolGo to the JSON converter — it runs entirely in your browser.
- Paste your JSONPaste the JSON you want to format or validate.
- Format or convertBeautify it with clean indentation, or convert it to YAML or CSV.
- Copy the resultCopy the formatted output — nothing you paste ever leaves your device.
How do I fix "invalid JSON" errors?
The most common culprits are trailing commas, single quotes instead of double quotes, missing brackets, and unescaped characters. The tool validates as you work and points at the problem area, so you can fix it before copying the result into your app.
JSON to YAML or CSV — when is that useful?
YAML is easier to read for config files, so converting a JSON payload to YAML is handy for docs and CI configs. CSV is ideal when you need to open API data in a spreadsheet. The converter handles both directions of the common cases.
Frequently asked questions
Is my data sent anywhere?
No — all parsing, formatting, and conversion happen in your browser, so your data stays on your device.
Does it validate my JSON?
Yes — it flags syntax errors as you work so you catch problems early.
What can I convert JSON to?
YAML and CSV, so you can move data between APIs, config files, and spreadsheets.