📋 JSON Formatter Example
Free online JSON formatter with common example templates. Format, validate, and minify JSON with one click. Pure frontend, no data upload.
Zero dependencies · Works offline📂 JSON Example Templates
Click to load a JSON example:
📝 Input JSON
📤 Formatted Result
📖 JSON Formatter Examples Explained
What is JSON Formatting?
JSON formatting (pretty print) converts a minified single-line JSON string into a well-indented, human-readable format. For example, converting {"name":"John","age":25} into a multi-line indented structure for easy reading and debugging.
Common JSON Format Examples
- User Profile: Object with name, email, age fields
- API Response: Standard API return format with status, data, message
- Config File: JSON with database, server, logging configuration
- Nested Structure: Multi-level nested objects and arrays
- GeoJSON: Geographic coordinate data in GeoJSON format
JSON Format Specification
JSON (JavaScript Object Notation) is a lightweight data interchange format. Key rules: keys must be wrapped in double quotes, string values must use double quotes, comments are not supported, and trailing commas are not allowed.
How to Use
Step 1: Select Example — Click an example card above to load a common JSON template, or paste your own JSON data into the input area.
Step 2: Format — Click "Format" to beautify, "Minify" to remove whitespace, or "Validate" to check JSON syntax.
Step 3: Copy — The formatted result appears in the output area. Click "Copy Result" to copy to clipboard.
❓ FAQ
What is JSON formatting?
JSON formatting (pretty print) converts a minified JSON string into a well-indented, human-readable format using 2 or 4 space indentation with line breaks.
How to validate JSON?
Paste your JSON string into the tool and click Format. If valid, the formatted result appears; if invalid, the specific error location and reason are shown.
What is the difference between JSON and JSONP?
JSON is a pure data format. JSONP (JSON with Padding) wraps JSON data in a callback function for cross-domain requests. Modern development recommends CORS over JSONP.
What data types does JSON support?
JSON supports 6 data types: string, number, boolean, null, object, and array. It does not support comments, dates, or undefined.
Will data be uploaded to a server?
No. All JSON formatting and validation is done locally in the browser. No data is sent to any server.