Sb3 Link — Convert Zip To

Select Archive.zip and press Return on your keyboard to rename it. Change the extension from .zip to .sb3 .

The file size may exceed Scratch’s limit (50 MB). Use TurboWarp or compress assets before re-zipping. convert zip to sb3

Scratch 3.0 cannot directly open SB2 (Scratch 2.0) inside an SB3 wrapper. First convert using Scratch’s built-in importer. Select Archive

Open the folder containing your Scratch assets ( project.json , costumes, sounds). Use TurboWarp or compress assets before re-zipping

The "conversion" is a two-step procedure that relies on the archive's internal structure remaining intact: Compression

Windows will warn you that changing the extension might make the file unusable. Click Yes to confirm. Locate Your File: Open Finder and find your ZIP archive.

Don't look for a converter. It is the official, fastest, and safest way to handle this file type.