Custom Dimension Downloader
by NebulaJinxed
Custom Dimension Downloader is a Fabric client mod that reads information about the dimension a player is in and saves the custom dimension data a server sends.
What it does
On a server with custom dimensions, the mod can run a command after the player joins and print the output to chat. Its scanning step looks at the server-side custom dimension data and writes it to a text file, then confirms in chat which dimension name was saved. The file is placed in the .minecraft/config folder.
The mod is meant to be used together with World Downloader, which saves the world itself, so the dimension data it captures makes the saved world more accurate. Only the client needs it, so server owners do not have to install anything. Builds are published for Fabric and cover 1.21.4 – 1.21.5, with 1.0.2 for 1.21.5 as the latest file. The code is released under the MIT License, but the project is not open source.
Key features
Dimension information
Shows information about the dimension the player is currently in.
Custom dimension scanning
Scans the custom dimension data that a server holds and saves it for later use.
Saved dimension file
Writes the dimension data to a text file in the config folder.
Command after joining
Runs a chosen command automatically a set time after the player joins a server, and prints its output to chat.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
How it compares
World Downloader is also a Fabric mod under the MIT License, with builds for 1.21 – 1.21.10. Its client requirement is stricter, since the client must run it and the server may optionally run it, and it is not open source. Datapack Downloader (fork) is open source under the MIT License, works on both client and server, and covers 1.20.2 – 26.3. Dimension World Spawn is a server-side only Fabric mod for 1.21.1, released under the MIT License and not open source.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Custom Dimension Downloader | Fabric | 1.21.4 – 1.21.5 | Client-side only | 2025-06-12 |
| World Downloader | Fabric | 1.21 – 1.21.10 | Client required, server optional | 2025-10-16 |
| Datapack Downloader (fork) | Fabric | 1.20.2 – 26.3 | Client and server | 2026-09-16 |
| Dimension World Spawn | Fabric | 1.21.1 | Server-side only | 2026-04-21 |
Questions
Where is the saved dimension data stored?
Can Custom Dimension Downloader be used on its own to save a world?
In the catalog
Custom Dimension Downloader is one of 8,016 Management mods on ModsFinder, and one of 5,930 Management mods for Fabric. 15,307 mods support Minecraft 1.21.5.
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Official listing
- Modrinth page
- modrinth.com/mod/cdd
- Owner
- NebulaJinxed
- Published
- 2025-06-04
- Updated on Modrinth
- 2025-06-12
- Facts verified
- 2026-10-15