JSON Formatter
Format and prettify JSON with syntax highlighting.
About JSON Formatter
This free JSON formatter turns minified or messy JSON into clean, indented text you can read, copy, and share. Developers use it to inspect API responses, clean fixtures, and prepare examples for documentation — without installing an editor plugin.
How to use this tool
- Paste raw JSON into the input pane (API response, config file, or log snippet).
- Click Run / Format to beautify the document with consistent indentation.
- Review the highlighted output for structure and nesting.
- Copy or download the formatted JSON into your editor, ticket, or test fixture.
What you get
- Pretty-print and indent nested objects and arrays
- Browser-based formatting for privacy-friendly local work
- Copy-ready output for commits, docs, and code review
Common use cases
- Beautify one-line JSON from network tabs or curl
- Normalize indentation before committing fixtures
- Prepare readable payload examples for API docs
Frequently asked questions
Is this JSON formatter free?
Yes. Format unlimited JSON online on CodeForge Tools with no account.
Does formatting upload my JSON?
Formatting is designed to run in your browser, so typical payloads stay on your device.
Can it format large JSON files?
Yes for normal API and config sizes. Extremely large documents may be limited by browser memory.