JSON to Properties Converter Online

JSON Swiss

All In One JSON Toolkit

Convert JSON data to Java Properties configuration file format

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Need the reverse conversion?

JSON Input

Add JSON data to see Properties output

Your converted Properties configuration will appear here

Step 1 – Input JSON Configuration
- Paste your JSON object (e.g., app settings, database config) into the left editor.
- The tool handles nested objects and arrays automatically.
- You can also Import JSON files directly from your computer.
Step 2 – Automatic Conversion
- The converter flattens the JSON hierarchy using dot notation keys (e.g., server.port=8080).
- Arrays are converted using index format (e.g., hosts.0=server1).
- Special characters and unicode values are properly escaped for Java Properties format.
Step 3 – Export Properties File
- Copy the result to your clipboard for use in Spring Boot application.properties or other Java apps.
- Download as a .properties file to save your configuration.

Example: JSON to Properties

// Input JSON
{
  "server": {
    "port": 8080,
    "active": true
  }
}

// Output Properties
server.port=8080
server.active=true

Convert Properties files back to JSON.

Validate your JSON input.

Nested objects are flattened using dot notation. For example, {"database": {"host": "localhost"}} becomes database.host=localhost.

Arrays are converted using indexed keys. For example, ["a", "b", "c"] becomes array.0=a, array.1=b, array.2=c.

Yes! You can paste JSON directly into the input editor or import JSON data from various sources using the import button.

Special characters like =, :, #, !, newlines, and Unicode characters are automatically escaped according to Properties format standards.

Boolean values (true/false) and numbers are preserved as-is. Null values become empty strings. Strings are escaped as needed.

Yes, all data processing happens entirely in your browser. Your JSON data is never sent to any server, ensuring complete privacy and security.

JSON to Properties Converter Online | JSONSwiss