Zip To Sb3 Extra — Quality

Compress-Archive -Path ".\project.json", ".\costumes", ".\sounds" -DestinationPath "output.zip" -CompressionLevel NoCompression Rename-Item "output.zip" "final.sb3"

This is the secret to . Most ZIP tools use DEFLATE compression (level 6). But for SB3, you need: zip to sb3 extra quality