JSON Formatter
Pretty-print JSON. Runs locally in your browser with no signup or API key.
HOW TO USE
How to use the JSON Formatter
Format messy JSON into readable indented output for debugging, APIs, configuration files and developer workflows.
- Paste your JSON into the input area.
- Run the formatter.
- Review the structured result.
- Copy the formatted JSON back into your project.
Useful tips
- If formatting fails, validate the JSON for missing commas, quotes or brackets.
- Use the JSON Minifier when you want compact output.
- For tabular data, try JSON to CSV.
Frequently asked questions
Does the formatter change my data?
It reformats valid JSON for readability without intentionally changing the data values.
What happens if my JSON is invalid?
The tool reports an error instead of formatting malformed JSON.
Can I minify JSON too?
Yes, ToolWise has a separate JSON Minifier.