What this tool does

Format (pretty print) a JSON string and render a collapsible JSON viewer. You can also copy and clear content quickly.

Steps

1. Paste JSON into the textarea.
2. Click Format to pretty-print and view structured JSON below.
3. Use Copy to copy the formatted JSON; Clear to reset.

Example

{"user":{"id":1,"name":"Alice","roles":["admin","editor"]}}

Notes

• Input must be valid JSON; otherwise formatting will fail.
• All processing runs locally in your browser.