News and technical documents for all things Fastoe.
The "extra quality" aspect usually implies a conversion process that preserves high-resolution textures, high-bitrate audio, or complex scripts without corruption or compression artifacts. 🛠️ Understanding the Formats
@echo off for %%f in (*.zip) do ( mkdir temp_%%~nf cd temp_%%~nf "C:\Program Files\7-Zip\7z.exe" x -y ..\%%f "C:\Program Files\7-Zip\7z.exe" a -tzip -mx0 ..\%%~nf.sb3 * cd .. rmdir /s /q temp_%%~nf ) echo Done. Original ZIPs converted to SB3 with no quality loss. zip to sb3 extra quality
This loop preserves by using no compression ( -0 ) and stripping metadata ( -X ). The "extra quality" aspect usually implies a conversion
| Tool | Audio Preservation | Vector Quality | Metadata Retention | |------|-------------------|----------------|--------------------| | | 320kbps MP3 preserved | Full SVG | Yes | | TurboWarp Packager (as converter) | Lossless WAV | Perfect | Full | | ZIP2SB3 (PythonAnywhere script) | 16-bit PCM | High | Partial | Original ZIPs converted to SB3 with no quality loss
| Aspect | Benefit | |--------|---------| | | Smaller file size → faster uploads to Scratch | | JSON minification | Removes unnecessary whitespace from project.json | | Preserves asset integrity | PNG/MIDI/WAV unchanged, only recompressed | | Valid .sb3 structure | Exactly matches Scratch 3 format |
If you don't see the extension, enable "File name extensions" in your operating system's view settings. 4. Verify in Scratch Scratch Editor Navigate to File > Load from your computer and select your new
Use 16-bit WAV files or high-bitrate MP3s. Scratch will compress these, but starting with a higher-quality source yields a better final output. 2. Organizing the File Structure