Prettify JSON - SwiftBox
Format JSON with proper indentation and spacing.
How to use
- Paste minified or messy JSON into the input (or import a file).
- Choose indentation: spaces or tabs.
- The formatted result appears instantly — copy or download it.
Common use cases
- Inspect API responses that arrive as one long line.
- Clean config files before committing to git.
- Prepare readable JSON screenshots for documentation.
FAQ
Is my JSON uploaded?
No. Formatting runs entirely in your browser on 76dc.com — nothing is sent to our servers.
Why do I see Invalid JSON?
The input has a syntax error. Use the JSON validator tool to find the issue.
How large can the file be?
Limited by browser memory. A few MB is fine; split very large payloads.