Kdly Data (pronounced "cuddly data") is a little library that allows all .json files in resource or data packs to be replaced with .kdl files instead, following the specification for JSON-in-KDL 3.0.1.
Kdly Data currently does not support using KDL for .mcmeta files - this will require some complex changes to the odd system used for loading metadata. I may look into it in the future.
.kdl files used in place of .json will respect data pack priority, and filtering out the .json version of a resource will filter out the respective .kdl version too.
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.19, 1.19.1, 1.19.2
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as kdlydata-1.0.1+1.19.2.jar — drop this file into the mods folder
- Download size: 101 KB
- Download link checked 1 Sept 2026 — working
These come from our own check of the pack file, not from the source page.