ChunkDebug Mod (1.21.8, 1.20.1) – Visualize and Analyze Chunk Loading in Real Time

ChunkDebug Mod (1.21.8, 1.20.1) is a comprehensive debugging tool tailored for Minecraft players, mod developers, and technical builders who want to gain deeper insights into how chunks load and behave in real time. This mod provides a detailed, interactive interface that displays all currently loaded chunks, complete with their generation status, ticket types, and spatial data.

Through a live-rendered chunk map, users can explore the game world from a systems perspective — zoom in, pan across the landscape, and select individual chunks to inspect critical technical data. Whether you’re troubleshooting lag, optimizing world generation, or simply curious about what’s happening behind the scenes, this mod offers the perfect toolkit.

Key Features:

Live Chunk Visualization
See which chunks are currently loaded in real time. Display includes chunk status, generation progress, and active tickets.
Interactive Chunk Map
Navigate your world with a fully zoomable and pannable map. Easily locate and isolate specific regions of interest.
Detailed Chunk Selection
Click to inspect any chunk. View its exact coordinates, loading status, ticket type, and related debug information.
Rendering Filters & Layers
Toggle display layers for chunk generation stages, force-loaded tickets, and other diagnostics to tailor your debugging view.
Customizable Minimap Overlay
Adjust the size and position of the minimap to suit your preferences or screen layout, making it ideal for both fullscreen and windowed gameplay.

Screenshots:

Why It Matters:

In complex modded environments or large survival worlds, chunk-related issues often contribute to performance drops, irregular world loading, or unexplained bugs. ChunkDebug Mod equips you with the visual tools needed to trace and resolve those issues. It’s especially useful for server administrators, technical redstoners, and developers working with dynamic chunk-loading mechanics.

Whether you’re optimizing a sprawling redstone system or tracking world generation in a modpack, this mod delivers clarity and control over Minecraft’s most fundamental systems.