
World Downloader
A simple mod to download worlds from multiplayer servers
About this Mod
A simple mod that allows you to download Minecraft worlds from servers
Simply load the chunks you want to download (unloading is fine, the chunks automatically get saved after getting loaded once) and press the keybind to download the world (O by default). This may cause a bit of lag, especially if you're downloading a large part of the world. You can view progress in the logs.
Go to .minecraft and find a folder named "downloaded_world", copy that into the "saves" folder, and play your minecraft world!
Note: You always spawn at 0,0 in the downloaded world, you have to go to the coordinates of the chunks you downloaded (for example you downloaded chunks in 0, 0, -1000, now you have to go to 0, 0, -1000 in the downloaded world to view the downloaded chunks)
This mod doesn't download entities nor container data (like items in chests, furnaces etc...) (maybe in the near future)
this mod requires mcaselector which you can get from here
Available Versions
How to Install World Downloader on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.10).
Install Mod
Open the mod browser in the dashboard and search for "World Downloader". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.10, 1.21.9, 1.21.8 (+8 more)
Server-side
~ OptionalRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
World Downloader server crashes on startup – what to do?
Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.10). You can switch loaders with one click in the panel.
Is World Downloader compatible with fabric?
World Downloader officially supports fabric for Minecraft 1.21.10, 1.21.9, 1.21.8. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with World Downloader – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if World Downloader consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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Install World Downloader with just one click on your server.