"format_version": 2, "header": "name": "PNG Import Pack", "description": "Auto-converted from source_image.png", "uuid": "<generated-UUID>", "version": [1, 0, 0], "min_engine_version": [1, 19, 0] , "modules": [ "type": "resources", "uuid": "<generated-UUID-2>", "version": [1, 0, 0] ]
# 4. Create pack icon pack_icon = img.resize((256, 256)) pack_icon.save(os.path.join(temp_dir, "pack_icon.png")) png to mcpack converter
The converter accepts an optional mapping.json alongside the PNG, specifying the target texture path. 5. Implementation Architecture A reference Python-based implementation: Texture Assignment Logic (The "Mapping" Problem) A raw
| Attribute | Requirement | |-----------|-------------| | Format | PNG (24-bit or 32-bit with transparency) | | Resolution | Power of two (16, 32, 64, 128, 256, 512, 1024) | | Aspect Ratio | Square for blocks/items; rectangle allowed for paintings/entities | | Alpha Channel | Optional (used for transparency on items like glass or icons) | "") + ".zip"
Uses a deterministic or random v4 UUID to ensure uniqueness. 3.2 Pack Icon The input PNG is resized to 256x256 and saved as pack_icon.png (the pack’s thumbnail in Minecraft’s settings menu). 4. Texture Assignment Logic (The "Mapping" Problem) A raw PNG does not know which block or item to replace. The converter must decide. We propose three user-selectable modes:
# 5. Zip to .mcpack shutil.make_archive(output_name.replace(".mcpack", ""), 'zip', temp_dir) os.rename(output_name.replace(".mcpack", "") + ".zip", output_name) Input: logo.png (512x512, company logo with transparency)
logo_pack.mcpack