Convert Zip To Sb3 !!link!! Jun 2026

: This usually happens if your ZIP file contains a folder. Scratch requires the project.json to be at the "top level" of the archive.

Note: You cannot simply rename a ZIP to SB3 if you have extracted the folder. The folder must be recompressed into a ZIP file first, then renamed.

Are you planning to the project's code inside the ZIP before converting it back to SB3? Convert .zip to .sb3? - Discuss Scratch convert zip to sb3

If you have a that contains a Scratch project structure (e.g., you modified an extracted SB3):

To change project metadata or complex logic not easily handled in the block editor. : This usually happens if your ZIP file contains a folder

By default, Windows hides file extensions. You must enable them first. Open and click the View tab at the top. Check the box next to File name extensions . Locate your ZIP file (e.g., my_scratch_project.zip ). Right-click the file and select Rename (or press F2 ). Change the .zip at the end of the file name to .sb3 .

A warning prompt will appear stating: "If you change a file name extension, the file might become unusable." Click . Open Finder and locate your ZIP file. The folder must be recompressed into a ZIP

: Right-click your ZIP file and change the .zip extension to .sb3 .

If you place your project assets inside a folder named "MyProject", right-click that folder, and compress it, your operating system creates an archive structure like this: MyProject.zip →right arrow MyProject/ →right arrow project.json

: Right-click the file and select Rename . Change the ending from .zip to .sb3 . If you don't see the extension, enable "File name extensions" in the View tab of File Explorer.

Once the conversion is complete, verify that the file functions properly within the Scratch environment: Go to the official ⁠Scratch MIT Editor . Click on in the top menu bar. Select Load from your computer .