Catch JSON errors
Check whether pasted JSON is valid before using it in code or docs.
Free. Private. No uploads.
JSON Formatter
Format messy JSON, minify payloads and sort object keys directly in your browser. Pocket Dev helps you clean API responses, config files and mock data without uploading anything.
What it does
Clean JSON for code, APIs and debugging.
JSON Formatter helps developers turn compact or messy JSON into readable output. Use it for API responses, app configs, local mock data, package files and debugging notes.
Pretty or compact output
Beautify JSON for reading or minify it for compact storage and examples.
Optional key sorting
Sort object keys when you want stable, easier-to-compare JSON output.
How to use
Use JSON Formatter in a few steps.
- Open the JSON Formatter tool inside Pocket Dev.
- Paste JSON or load your sample data.
- Choose format, minify or sort options.
- Copy the cleaned JSON output.
FAQ
JSON Formatter questions
Is this JSON formatter free?
Yes. Pocket Tools is free to use.
Is my JSON uploaded?
No. JSON is processed locally in your browser.
Can it minify JSON?
Yes. The tool can format readable JSON or produce compact minified output.