Chunkit
by racxus
Chunkit is a world pre-generator for Fabric and NeoForge that generates terrain in advance so exploration runs with less loading lag.
What it does
Players and server owners run pre-generation tasks through chat commands, and the process reports progress as it goes. Live feedback includes estimates of the disk space the generated chunks will take, so the storage impact can be checked while the task runs. Pre-generation is heavy, and chunks being generated can cause temporary drops in performance. Chunkit is built to finish a task as quickly as the hardware allows, and once it completes the world can be explored with much less lag on the map.
The mod is aimed at the preparation phase of a world, moving the heavy processing out of real-time play. A server running it needs every connecting player to have it too. Builds are published for Fabric and NeoForge, for 1.21.1 and 26.1.1, with 1.0.0 as the latest file on both loaders, under All rights reserved and not open source.
Key features
Terrain pre-generation
Chunks are generated ahead of time, so terrain is already in place when players reach it.
Command-based control
Generation tasks are created and managed through a single command set entered in chat, with no menus to navigate.
Live progress updates
Progress is reported in real time, including file size estimates for the world's storage use.
Disk space estimation
Before and during a task, the expected disk use of the generated world can be read from the feedback.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Preparing a server world
Server owners can pre-generate an area before players arrive, so the first trips across new land stay smooth.
Exploring with less lag
After a task finishes, players moving through the generated area face much less loading lag on the map.
Who it’s for: Server owners and players who want to generate a world before exploring it, and who want to watch its storage cost as the task runs.
Questions
Does Chunkit need to be installed on both sides?
Which loaders does Chunkit support?
Will pre-generation slow down the game while it runs?
In the catalog
Chunkit is one of 3,545 Optimization mods on ModsFinder, and one of 2,575 Optimization mods for Fabric. 11,522 mods support Minecraft 26.1.1.
More from racxus
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What the author says
ChunkIt is a utility mod designed to eliminate "World Loading Lag." By pre-generating terrain via simple commands, it shifts the heavy processing load from real-time gameplay to a preparation phase, ensuring your exploration is smooth and stutter-free. Unified Command: Use /chunkit to manage all generation tasks.
Official listing
- Modrinth page
- modrinth.com/mod/chunkit
- Owner
- racxus
- Published
- 2026-03-27
- Updated on Modrinth
- 2026-04-12
- Facts verified
- 2026-10-15