: If you are trying to convert an existing .sb3 or .zip into a different format (like .exe or .html ), this tool is the community standard for creating standalone versions of projects. Common Issues & Troubleshooting Convert .zip to .sb3? - Discuss Scratch
If you have a valid ZIP archive of a Scratch project, converting it back to the native format is straightforward. Method 1: The File Extension Swap (Windows & macOS) The easiest method is to change the extension directly. Open File Explorer. Click the View tab at the top menu. Check the box for File name extensions . Right-click your ZIP file and select Rename . Change .zip at the end of the file name to .sb3 . Press Enter and confirm the warning dialog. On macOS: Click the file and press Return on your keyboard. Delete .zip and type .sb3 at the end of the name. Press Return . Click Use .sb3 in the pop-up confirmation box. Method 2: Re-compressing the Assets Correctly
Open your ZIP folder. You must see the project.json file immediately in the root directory. If your files are nested inside another subfolder within the ZIP, Scratch will fail to read it. Step 2: Compress the Files Correctly convert zip to sb3 fix
) files, providing a standardized "fix" for users who have inadvertently converted or corrupted their projects during the extraction and re-compression process. Standardizing the .zip to .sb3 Conversion Fix 1. Abstract file format used by Scratch 3.0 is a renamed ZIP archive . Users often rename to modify internal assets (like project.json
What does Scratch show when you try to load the file? : If you are trying to convert an existing
Do not continually overwrite a single file. Save your progress using sequential names, such as SpaceGame_V1.sb3 , SpaceGame_V2.sb3 , and so on.
: Select all the files inside the folder (do not compress the folder itself) and choose "Compress" or "Send to Compressed (zipped) folder". Method 1: The File Extension Swap (Windows &
When downloading a project from the online Scratch editor, some web browsers, or specific configurations, may mistakenly interpret the file type and change the extension to .zip to reflect its compressed format.
If you have a ZIP archive that needs to be an SB3 project, or if your converted project is throwing errors, this comprehensive guide will show you exactly how to convert the files and fix any bugs. What are SB3 and ZIP Files?