: Go to the Scratch Editor , click File > Load from your computer , and select your new .sb3 file. 2. Modern Conversion Tools (Updated 2026)
: Open your ZIP folder and ensure the project.json file and all media assets (PNG, SVG, WAV, etc.) are at the root level of the archive. convert zip to sb3 updated
: Select all those files and compress them into a new ZIP archive. : Go to the Scratch Editor , click
If you have a collection of Scratch assets (like sprites, sounds, and a project.json file) inside a ZIP folder and want to turn it back into a playable Scratch project, follow these steps: : Go to the Scratch Editor