Craft Pattern Kit — Minecraft tools
Independent fan-made tools. Not an official Minecraft product. Not approved by or associated with Mojang or Microsoft.

Scope: Java Edition 1.21.1. Block art and map art use sixteen concrete colors. Map art supports a single flat 128x128 scale-0 map with a north helper row, not staircases, water or multi-map builds. All output is a manual build reference; no schematic/world import is advertised. Skin export is the modern 64x64 Classic or Slim layout. Banner editor uses nineteen geometric loom patterns and the six-layer survival limit; command syntax is pinned to Java 1.21.1. Banner previews are original geometric approximations, not official game textures. Eight banner letters E F H I L O T X are supported; twelve gallery recipes are original.

Data: scalar block RGB averages, dye IDs/colors and map color IDs/RGB were checked against Mojang's official Java 1.21.1 client and published mappings. Map previews use the NORMAL brightness multiplier 220/255, rounding each channel down. Source manifest:
https://piston-meta.mojang.com/mc/game/version_manifest_v2.json
Client SHA-1: 30c73b1c5da787909b2f73340419fdf13b9def88
Mappings SHA-1: 2244b6f072256667bcd9a73df124d6c58de77992
Catalog extraction/review date: 2026-09-24.
Game textures, artwork, executable code and skin files are not redistributed. Editor sample artwork, geometric banner preview shapes and gallery recipes are original project content. Names and identifiers remain their owners' marks.

Reference rules:
https://www.minecraft.net/en-us/article/block-week--loom
https://feedback.minecraft.net/hc/en-us/articles/360018363512-Minecraft-Java-Edition-Snapshot-18W43C
https://www.minecraft.net/en-us/article/minecraft-java-edition-1-20-5
https://learn.microsoft.com/en-us/minecraft/creator/documents/skinpack

Map colors differ from visible block textures; resource packs and shaders can change appearance. The flat map assumes an unobstructed Overworld surface of equal-height opaque blocks. Blank skin and striped outfit sample are original; front/back views are flat UV previews, not 3D renders.