Passive Chunk Pregenerator
by liliandev
Passive Chunk Pregenerator is a server-side Utility mod that generates chunks around players and the world spawn while they are offline or online.
What it does
Generation runs in the background around players and the worldspawn, so chunks near where people go are ready before they arrive. The author notes that the mod generates chunks passively and that the work is scheduled onto a separate worldgen thread, not the main server thread that most in-game code uses. Before a chunk is generated, the mod checks the dimension and whether the chunk is viable.
The schedule favors chunks that matter more, so important chunks are generated first and the rest follow. Because it is server-side only, players join without installing it, and only the server runs the generation work. Files exist for Fabric, Forge and Quilt on 1.18.2 and 1.19.2, and the latest builds, 1.0.3 for 1.19.2, cover Fabric and Quilt, while Forge uses 1.0.3-forge.
The source code is public and the project is open source under The Unlicense, which places it in the public domain. A public issue tracker is also linked from the project page.
Key features
Passive generation around players
Chunks are generated around players and the worldspawn, whether they are online or offline.
Separate worldgen thread
Generation is scheduled on a worldgen thread instead of the main thread, which handles most in-game work.
Viability and dimension checks
Each chunk is checked for viability and dimension before generation starts, so unsuitable chunks are skipped.
Priority ordering
More important chunks are generated first, and the remaining chunks are scheduled after them.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Who it’s for: Server owners who run Fabric, Forge or Quilt servers on 1.18.2 or 1.19.2 and want chunks generated in the background. Players need no installation, since the mod is server-side only.
How it compares
Easy Chunk Loader is a Fabric mod for 1.19.3 with the Client and server environment, released under the MIT License and open source. Hold That Chunk is a Fabric mod for 1.18 – 1.21.1, client-side only and under the MIT License. Fancy Chunks is a Forge mod for 1.18.2 – 1.19.4, client-side only and not open source, under All rights reserved. Passive Chunk Pregenerator differs by running server-side only and by generating chunks rather than loading or displaying them.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Passive Chunk Pregenerator | Fabric, Forge and Quilt | 1.18.2 – 1.19.2 | Server-side only | 2022-12-02 |
| Easy Chunk Loader | Fabric | 1.19.3 | Client and server | 2023-02-14 |
| Hold That Chunk | Fabric | 1.18 – 1.21.1 | Client-side only | 2023-10-25 |
| Fancy Chunks | Forge | 1.18.2 – 1.19.4 | Client-side only | 2023-07-02 |
Questions
Does Passive Chunk Pregenerator need to be installed on the client?
Which loaders are supported?
Which game versions does the mod cover?
In the catalog
Passive Chunk Pregenerator is one of 36,990 Utility mods on ModsFinder, and one of 25,772 Utility mods for Fabric. 12,559 mods support Minecraft 1.19.2.
More from liliandev
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What the author says
This mod generates chunks passively around players, offline or online, and the worldspawn to generate chunks that will most likely be needed in the near future. Each Dimension(or Level if you are a modder and use Mojmaps) has its own Thread to generate chunks. On the Main Thread, the one used for most ingame stuff…
Official listing
- Modrinth page
- modrinth.com/mod/passivepregen
- Owner
- liliandev
- Published
- 2022-08-02
- Updated on Modrinth
- 2022-12-02
- Facts verified
- 2026-10-15