Answers to common questions about formatting, beautifying, validating, and working with JSON online.
A JSON formatter is an online tool that formats and pretty prints JSON data into a clean, readable structure with proper indentation. It helps developers inspect API responses, debug JSON files, and understand complex or minified JSON.
Paste your JSON into the input editor above and click the Format button. The tool will instantly format your JSON in your browser without uploading any data.
Yes. This JSON formatter is completely free with no login, no registration, no ads, and no usage limits.
Yes. The formatter supports large JSON files and heavily minified JSON. All processing happens locally in your browser for maximum speed and privacy.
No. Your JSON data is never uploaded. Formatting, validation, and tree rendering all run entirely on your device.
This tool is designed for frontend developers, backend engineers, API developers, DevOps engineers, students, and anyone working with JSON data.