What is JSON Formatter?
JSON (JavaScript Object Notation) is a lightweight data interchange format that is easy for humans to read and write, and easy for machines to parse and generate. A JSON formatter converts minified JSON data into well-indented, readable format, with syntax highlighting, error detection, and data validation features.
How to Use
Basic Operations
- Paste or enter JSON data in the left input box
- Select indent size (2 spaces, 4 spaces, or Tab)
- Click Format to beautify or Minify to remove whitespace
- Results appear automatically on the right with syntax highlighting
- Click Copy or Download to save the result
Feature Description
Examples
Object Example
{"name": "John", "age": 25, "city": "New York"}Array Example
[1, 2, 3, "a", "b", "c"]Nested Structure
{"user": {"name": "Jane", "skills": ["JS", "Python"]}'}'FAQ
What is the difference between JSON and JSONP?
JSON is a data format, while JSONP (JSON with Padding) is a technique for cross-domain requests. JSONP wraps JSON data in a function call to bypass cross-origin restrictions, but has security risks and has been replaced by CORS.
How to fix JSON format errors?
Common errors include: missing or extra commas, using single quotes instead of double quotes, unsupported comments, and trailing commas. Use the validation feature to quickly locate error positions.
Is there a size limit for JSON data?
This tool runs in the browser and processing capability depends on your device performance. Generally, we recommend processing JSON data under 1MB for optimal experience.