Data Dumper
I don't know my version or loader
DataDumper
A Minecraft mod that helps datapack developers quickly browse and export registry data.
About
Ever found yourself constantly needing to check what's inside a registry while developing datapacks? Or wanting to filter for specific blocks and items?
DataDumper lets you browse registries directly in-game via commands, with support for tag and regex filtering. You can also export registry entries as JSON files for easy debugging.
On top of that, DataDumper prevents game crashes caused by invalid datapacks, so you can debug with peace of mind.
Features
- List all registries in the game
- Filter registry contents by tag or regex
- Export registry entries as JSON files
- Export datapack entries that failed to parse, making it easy to track down errors
- Prevent crashes when creating a world with invalid datapacks
- Click chat messages to copy all entries at once
Commands
| Command | Description |
|---|---|
/datadumper registries |
List all registries |
/datadumper registry <key> |
View all entries in a registry |
/datadumper registry <key> #<tag> |
Filter registry entries by tag |
/datadumper registry <key> "<regex>" |
Filter registry entries by regex |
/datadumper entry <key> |
Export registry entries as JSON files |
/datadumper entry <key> #<tag> |
Filter and export by tag |
/datadumper entry <key> "<regex>" |
Filter and export by regex |
Exported files are saved in the .datadumper/ folder under the server's working directory.
Screenshots
Regex filtering — Find all blocks containing "planks":
Tag filtering — Find all blocks tagged #c:chests:
Supported Versions
| Minecraft Version | Fabric | Forge | NeoForge |
|---|---|---|---|
| 1.20.1 | ✅ | ✅ | — |
| 1.21.1 | ✅ | — | ✅ |
| 26.1 | ✅ | — | ✅ |
Recommended Companions
- Mod Sets — Easily disable development mods in published modpacks
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.20.1, 1.21.1, 26.1
- 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 data-dumper-0.6.1.jar — drop this file into the mods folder
- Download size: 603 KB
- Download link checked 31 Aug 2026 — working
These come from our own check of the pack file, not from the source page.