MC Toolkit / Building / Map Art Extractor

Map Art Extractor

Turn a Minecraft map.dat file into a PNG image — read directly in your browser, nothing uploaded.

Map data file (world/data/minecraft/maps/<id>.dat)

Pick a numbered <id>.dat file from your world's data/minecraft/maps folder (worlds from before 26.1 keep it as data/map_<id>.dat). It will be decompressed and parsed entirely in your browser.

Reads real map.dat files and decodes colors using Minecraft’s actual 62-entry internal base-color table (4 brightness shades each), so block colors match the game exactly. Map markers, banners, and player/item-frame icons drawn on top of the map are not rendered — only the base terrain color grid. Your file is read entirely in your browser and never uploaded anywhere.

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A map pixel is one byte, and two of its bits are brightness

61 base colours × 4 shades = 244 colours from a 16,384-byte array. Only one of the four shades is the colour's full value; the other three are darkened to 86%, 71% and 53%.