Depending on your technical comfort level, there are two primary ways to convert a ZIP to an SB3.
Before diving into the conversion process, it is essential to understand how Scratch handles file structures. zip to sb3 extra quality
if sb3_output_path is None: sb3_output_path = zip_input_path.with_suffix('.sb3') else: sb3_output_path = Path(sb3_output_path) Depending on your technical comfort level, there are
Ensure you did not compress the main folder container. You must select the items inside the folder and compress them directly. Compressing the parent folder adds an extra directory layer that prevents Scratch from finding the files. If you want to refine your conversion, tell me: Which (Windows, Mac, Linux) are you using? Depending on your technical comfort level
Re-archive using standard lossless compression or swap raster graphics for vector formats ( .svg ).