Mcast WorldMapScanner creates precise static top-down PNG maps while keeping server load and temporary data under control.
The scanner reads Minecraft region headers to find chunks already stored on disk. It does not generate new terrain or waste time scanning empty areas. Existing chunks are loaded asynchronously, captured as snapshots and rendered outside the main server thread.
Processing speed is adjustable from 1 to 64 concurrent chunks. Intermediate images are progressively combined and removed, and the working directory is deleted after the finished maps are safely published.
Features
• Fast discovery of stored chunks from Minecraft region files.
• No generation of new terrain.
• Adjustable balance between rendering speed and server load.
• Automatic unloading of chunks loaded by the scanner.
• Progressive cleanup of intermediate files.
• Safe pause and resume.
• Exact scale: one Minecraft block equals one source pixel.
• Automatic world bounds or a selected square area.
• Full-resolution PNG output and a smaller crisp web copy.
• Material, biome, height, water-depth and surface-detail rendering.
Requirements
• Paper 1.21.11 / Minecraft 1.21.x.
• Java 21.
• No additional plugins or client mods required.
Installation
Place the JAR in the server's plugins folder, restart the server and run /worldmapscanner start.
Created by mcast.
The scanner reads Minecraft region headers to find chunks already stored on disk. It does not generate new terrain or waste time scanning empty areas. Existing chunks are loaded asynchronously, captured as snapshots and rendered outside the main server thread.
Processing speed is adjustable from 1 to 64 concurrent chunks. Intermediate images are progressively combined and removed, and the working directory is deleted after the finished maps are safely published.
Features
• Fast discovery of stored chunks from Minecraft region files.
• No generation of new terrain.
• Adjustable balance between rendering speed and server load.
• Automatic unloading of chunks loaded by the scanner.
• Progressive cleanup of intermediate files.
• Safe pause and resume.
• Exact scale: one Minecraft block equals one source pixel.
• Automatic world bounds or a selected square area.
• Full-resolution PNG output and a smaller crisp web copy.
• Material, biome, height, water-depth and surface-detail rendering.
Requirements
• Paper 1.21.11 / Minecraft 1.21.x.
• Java 21.
• No additional plugins or client mods required.
Installation
Place the JAR in the server's plugins folder, restart the server and run /worldmapscanner start.
Created by mcast.
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Spigot — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
World Map Scanner is a free Minecraft Java mod. Compatible with Minecraft 1.21. Downloaded 11 times (via Spigot). Download it and open it directly in the game.