Convert JSON to .properties (Java) Online
Convert JSON into a .properties file (Java config) and back, in your browser.
Nested keys use dot notation (app.name).
🔒 100% client-side — no data sent
Convert JSON into a Java .properties configuration file and back again, automatically flattening nested objects. Everything is processed 100% in your browser, keeping your configuration keys private.
What is it for?
- ▸ Turn a JSON config into a Spring Boot .properties file
- ▸ Convert a .properties file back to JSON for easy editing
- ▸ Migrate settings between a Java app and a JSON service
- ▸ Flatten nested JSON objects into dot-notation keys
FAQ
How do I convert JSON to a .properties file?
Paste your JSON into the tool: nested objects are flattened into dot-separated keys, such as server.port, to produce a valid .properties file.
What is a .properties file in Java?
A .properties file is a key-value format used by Java applications to store configuration, with one pair per line in the key=value format.
Does the conversion work both ways?
Yes, you can convert JSON to .properties and a .properties file to JSON, with dot-notation keys rebuilt into nested objects.