Why convert UI4JD to JSON?
.JSON is the universal name for this data, so people rename .ui4jd when a validator, formatter or another program expects a .json file. Because the contents are already JSON, this is a relabeling, not a real format change.
How to convert UI4JD to JSON
Notepad++ FREE
Open the file, use File then Save As, and pick .json as the extension. The text is copied unchanged into the new .json file.
Rename the file EASIEST
Simply change the extension from .ui4jd to .json in Explorer; the underlying JSON data is byte-for-byte the same.
About these formats
A UI4JD file is a configuration file from the Project 4JD UI resource pack for Minecraft Bedrock Edition, which recreates the older 4J Studios legacy console interface. Inside it is JSON-UI…
Open .UI4JD details →
.JSON
JavaScript Object Notation file
A JSON file is a plain-text data file in JavaScript Object Notation format, used by web APIs, app configurations, and data exports. Any text editor opens it - Notepad on Windows, TextEdit…
Open .JSON details →Quality & what to watch
- Nothing is lost - the bytes are unchanged; only the extension differs, so the file reads identically as JSON.
- Renaming it to
.jsonmeans the Project 4JD UI add-on may no longer recognize the file, so keep the original if the add-on needs it. - If a JSON validator reports errors, they were already present in the source; the extension change does not fix or introduce them.
Frequently asked questions
Do I really just rename it?
.ui4jd is JSON with a custom extension, so renaming to .json produces a valid, identical file.Will the Minecraft add-on still work after renaming?
.ui4jd name, so keep a copy of the original if the add-on still needs it.Why convert at all?
.json file recognize and lint the data.
