Free online properties to JSON converter. Parse key=value .properties files into JSON objects. Supports comments and JSON values. Runs locally in your browser, no upload.
100% Local
How to Use the Properties to JSON
Paste key=value properties into the input box. Click Convert to JSON and each line becomes a key-value pair in a JSON object. Use Clear to reset both panels.
How the parser handles lines
Lines starting with # or ! are ignored as comments
Empty lines are skipped
Values that are valid JSON are auto-parsed (numbers, booleans, objects)
Spaces around the = sign are trimmed
Features
Smart value detection — auto-parses JSON values
Reversible with the JSON to Properties tool
Handles arbitrarily many properties
All processing runs locally in your browser. Your data is not uploaded to any server.