How to Use
Paste JSON into the left panel and click Format JSON. The formatted result appears on the right with syntax validation.
Adjust indentation (2, 4, or 8 spaces), toggle Minify for a compact version, and use the Copy button to grab the output.
The tool validates JSON in real-time — errors are shown in red.
Frequently Asked Questions
Is my data sent to a server?
No. All JSON parsing and formatting happens in your browser. Your data never leaves your device.
What is the difference between JSON format and minify?
Formatting adds indentation and line breaks to make JSON human-readable. Minifying removes all whitespace to reduce size — useful for API payloads and storage.