JSON Formatter & Validator
Paste raw JSON to format, minify, or validate syntax errors instantly.
Related Free Tools
About Free Online JSON Formatter, Beautifier & Validator
Format messy JSON strings with 2-space or 4-space indentation, minify JSON for production, and validate syntax errors instantly.
How to Use
- Paste your raw or minified JSON string into the editor.
- Click Format (2 Spaces), Format (4 Spaces), or Minify.
- If there is a syntax error (like a missing comma or quote), the exact error message is shown immediately.
Key Features & Benefits
- Helps developers debug REST API responses, configuration files, and JSON payloads quickly.
- Runs 100% locally in your browser—sensitive API keys or user data are never uploaded.
Frequently Asked Questions
How do I validate if my JSON is correct?
Paste your JSON and click Format. If it is valid, you will see a green Valid JSON confirmation; otherwise the exact syntax error is displayed.
Paste your JSON and click Format. If it is valid, you will see a green Valid JSON confirmation; otherwise the exact syntax error is displayed.
What is the difference between Format and Minify?
Formatting adds indentation and line breaks for readability, while Minify removes all whitespace to reduce payload size.
Formatting adds indentation and line breaks for readability, while Minify removes all whitespace to reduce payload size.