JSON Formatter
Format and compress JSON data, supports Python dict conversion.
Input
Result
Powerful Online JSON Formatter & Beautifier
Our JSON formatter not only converts messy JSON strings into readable indented formats but also supports powerful error validation. Whether you are a front-end developer, back-end engineer, or data analyst, this tool will greatly enhance your efficiency.
- Python Dict Compatible: Supports fast conversion of Python dicts containing None, True, False, and single quotes to standard JSON.
- Dual Modes: Supports one-click Beautify and Minify to suit different scenarios.
- Real-time Validation: Automatically checks syntax during input and accurately locates errors.
JSON FAQs
Why did my JSON parsing fail?
Common errors include: trailing commas, using single quotes (JSON requires double quotes), unquoted property names, etc. Our tool provides detailed error prompts for you.
Is local processing secure?
Absolutely secure. All formatting logic runs in your browser; sensitive JSON data (like config files, API responses) is never sent to any server.