mcmap vs The Explorer's Friend

mcmap creates isometric pixel-art maps from Minecraft save files. It reads saves from the standard folders on Linux, macOS and Windows, and produces a PNG image by default; an option divides maps into square image tiles. Rendering settings include circular or coordinate-bounded areas, dimension selection, shading, lighting, water and beacon toggles, and map direction. A JSON color file lets users customize block colors and rendering types. The renderer uses all computer threads and processes terrain in batches. Rendering a whole map at once may require 10+ GB of RAM, and a fragment-size option can manage batch size. Use is through a terminal or PowerShell, with an experimental GUI available for Windows. The v3.0.0 release specifies Minecraft 1.13+ support. The project is distributed under GPL-3.0, with precompiled binaries and source code available for free. Building it uses CMake and depends on zlib, PNG, fmt and spdlog. The project notes that merged batches can produce visible lines in oceans; changing fragment size or water rendering settings may help.

The Explorer's Friend renders a live topographic map of a Minecraft world and serves it from an embedded web server. It runs on a server using Fabric, Quilt, NeoForge, Spigot or Paper, with different builds depending on the platform and Minecraft version. Explored chunks appear as players move through the world; full renders read region files on worker threads without loading chunks. Players can open the map in a browser using vanilla Minecraft clients, without installing a client mod. Separate layers show claims, player positions, markers and Waystones. Claim data can connect to several protection systems or be imported from JSON. Server administrators can disable or round player positions; invisible players and spectators are hidden by default. The server binds to 127.0.0.1 by default and has no built-in account system, so the project recommends a reverse proxy for public maps. Its optional outbound connection downloads the official vanilla client JAR once and verifies it by SHA-1. The MIT-licensed project is free, with live updates, dimension maps and read-only HTTP endpoints.