
BlueLib Common
BlueLib is a Minecraft modding library designed to handle a wide range of modding tasks. It includes systems for simplifying code development, with support for data packs and resource packs. The goal is to make modding more accessible!
Screenshots

About this Mod
BlueLib is a Minecraft modding library designed to handle a wide range of modding tasks. It includes systems for simplifying code development, with support for data packs and resource packs. The goal is to make modding more accessible!
BlueLib offers one resource for the community: A Wiki. Feel free to go through it.
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Available Versions
How to Install BlueLib Common 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 (1.21.3).
Install Mod
Open the mod browser in the dashboard and search for "BlueLib Common". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.3, 1.21.2, 1.21.1 (+1 more)
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
BlueLib Common 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 (1.21.3). You can switch loaders with one click in the panel.
Is BlueLib Common compatible with fabric and forge and neoforge?
BlueLib Common officially supports fabric, forge, neoforge for Minecraft 1.21.3, 1.21.2, 1.21.1. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with BlueLib Common – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if BlueLib Common 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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