Scratch already compresses media internally. Double compression reduces quality. Store mode = extra quality.
When users talk about "extra quality" or high-performance conversion, they are typically referring to these manual optimizations within the ZIP structure: zip to sb3 extra quality
: Scratch often compresses images to a standard resolution. To maintain "extra quality" for high-resolution assets (e.g., 2000x1000 pixels), you may need to "inject" them directly into the ZIP archive before renaming it to SB3. Scratch already compresses media internally