Zip To Sb3 Extra Quality Jun 2026
: Select all the individual files and compress them into a new ZIP archive.
| Tool | Best for | Quality retention | |------|----------|-------------------| | | Individual projects | Perfect | | Scratch Tools (Python CLI) | Batch conversion + JSON repair | Very high | | TurboWarp Packager (export as SB3) | Projects from HTML or ZIP | High (sanitizes JSON) | | sb3-utils npm package | Developers merging assets | Perfect (preserves all metadata) | zip to sb3 extra quality
The .sb3 file is just a container. The brain is the project.json file. If your ZIP has this file, unless you know JSON syntax. Editing this manually allows you to set high-quality settings that the Scratch editor sometimes hides. : Select all the individual files and compress
Converting Zip files to SB3 extra quality allows you to: If your ZIP has this file, unless you know JSON syntax
Scratch supports and MP3 (up to 320kbps). Standard converters often downsample to 128kbps. Extra quality preserves the original bitrate.
