Swift JSON Formatter for VS Code

A fast, reliable, and feature-rich JSON formatter extension for Visual Studio Code that handles various JSON formats and provides clear error messages.

Features

• Local Processing: All formatting is done locally - no external services required
• Multiple JSON Formats Support:
  • Standard JSON
  • JavaScript object notation (unquoted keys)
  • Single quotes
  • Trailing commas
• Smart Selection:
  • Format selected JSON text
  • Format entire file when no text is selected
• Mixed Content Support:
  • Automatically detects and formats JSON sections in logs or other text
  • Preserves non-JSON content
  • Handles multiple JSON sections in the same document
• Clear Error Messages: Helpful error messages when JSON is invalid
• Zero Configuration: Works out of the box with sensible defaults

Usage

You can format JSON in two ways:

1. Using Command Palette:

   • Select text containing JSON (or place cursor anywhere in a file)
   • Open the command palette (Ctrl+Shift+P or Cmd+Shift+P on Mac)
   • Type and select "Format JSON (Swift Json Formatter)"

2. Using Keyboard Shortcut:

   • Select text containing JSON (or place cursor anywhere in a file)
   • Press Ctrl+Shift+F (or Cmd+Shift+F on Mac)

The extension will automatically:

• Format the selected text if any is selected
• Format the entire file if no text is selected
• Format JSON sections within unstructured text while preserving the surrounding content
• Provide clear error messages if the JSON is invalid

Examples

Standard JSON

{"name":"test","value":123}

becomes:

{
    "name": "test",
    "value": 123
}

JavaScript Object Notation

{name: 'test', value: 123}

becomes:

{
    "name": "test",
    "value": 123
}

Mixed Content

Debug Output:
{'status': 'success', 'data': [1,2,3]}
Other info: not JSON
Response: {"code":200,"message":"OK"}

becomes:

Debug Output:
{
    "status": "success",
    "data": [
        1,
        2,
        3
    ]
}
Other info: not JSON
Response: {
    "code": 200,
    "message": "OK"
}

Release Notes

1.1.0 (2024-01-09)

Major update with new features:

• Local JSON processing (no more external service dependency)
• Support for JavaScript object notation
• Support for single quotes in JSON
• Support for trailing commas
• Comprehensive error messages
• Full test coverage
• Improved error handling and validation
• Better handling when no text is selected

1.0.4

• Initial release with basic JSON formatting

Feedback and Contributions

• File bugs and feature requests in our GitHub repository
• Contributions are always welcome!