PolarLite

The PolarLite format is a lightweight format to store minecraft worlds, it's based of the Polar format, but with a few changes.

Table of Contents

• Format Changes
• Run
• CLI
• License
• Contributers

Format Changes

A list of changes between Polar and PolarLite

• Made zstd compression a must
  • Instead of compressing the World-field, it compressed the entire file
• Changed from Network Buffer to MessagePack
• Changed file extension from .polar to .polarlite
• Changed Magic Number from Polr to PolrLte
• Removed Array length fields
• Removed User Data-fields
• Removed Block Palette's
  • Block Palette Data using Blockstate IDs
  • Blockstate IDs are providied by the Registry
• Removed Biome Palette's
  • Biome Palette Data using Biome IDs
  • Biome IDs are providied by the Registry
• Removed Block Light and Sky Light
• Removed Has ID from Block Entity
  • Block Entity ID will be null instead

Run

go run cmd/polarlite/main.go <arguments>

CLI

polarlite
    --help, -h
        Show this message and exists

    --version, -v
        Prints version and exists

    --world, -w <string>
        Path to the world folder

    --output, -o <string>
        Path to the output file

License

PolarLite © 2025 by CraftUniverse is licensed under Creative Commons Attribution-ShareAlike 4.0 International

Contributers

• @Turboman3000