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About JSON Formatter
The JSON Formatter is an essential web utility for software developers, data engineers, and API integrators. JSON (JavaScript Object Notation) is the standard format for data exchange on the web. However, raw JSON payloads from APIs are often minified into a single line, making them hard to read. Our formatter beautifies messy JSON, minifies payloads to reduce data transfer sizes, and validates syntax in real-time.
How it Works
Paste your JSON data into the input box. Select your preferred indentation (2 spaces, 4 spaces, or tabs) and click "Format". The tool attempts to parse the string using JSON.parse(). If successful, it formats it using JSON.stringify() with the selected indentation. If it fails, it displays a descriptive error message indicating the syntax issue.
Key Features
- Formatting & Beautification: Converts minified JSON to readable code.
- Indentation Options: Choose between 2 spaces, 4 spaces, or tabs.
- Minification: Shrinks JSON into a single line to reduce size.
- Syntax Validation: Identifies and highlights formatting errors.
Technical Details
This utility runs entirely client-side. The formatting script uses JavaScript's native JSON.parse() to validate the input string, catching syntax errors and displaying them to the user. It then formats the data using JSON.stringify(obj, null, indent), where indent is either space counts or a tab character.