Developer Tools
JSON Formatter
A simple browser-based helper for API testing and debugging.
Live
Input
Output
About this tool
Use this tool when you need to inspect, clean up, or validate JSON before using it in development or debugging.
Format and validate JSON with pretty output and errors.
Common use cases
- Format API responses before reviewing them.
- Validate copied JSON and catch syntax errors.
- Make long single-line JSON easier to read.
Examples
Pretty print response
Input
{"name":"Ali","role":"admin"}
Output
Indented JSON output
Catch invalid JSON
Input
Broken JSON with missing comma
Output
Readable validation error
How to use
- 1Paste your text or upload your file.
- 2Adjust the options if needed.
- 3Copy, download, or continue with the result.
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Frequently asked questions
What is JSON Formatter useful for?
This tool is meant to help you complete its core task quickly and clearly.
When should I use JSON Formatter?
Use it when you want a simpler and faster workflow than handling the task manually.
Can I use it for repeated tasks?
Yes. The page is designed for repeatable everyday workflows.