Open the Scratch Online Editor , go to , and select your new file. Method 2: Re-Zipping Extracted Files
This usually happens if the internal structure is wrong. Ensure that the project.json file is in the root of the ZIP archive, not tucked away inside a sub-folder. convert zip to sb3
The "brain" of your project containing all the code and logic. SVG/PNG files: Your costumes and backdrops. WAV/MP3 files: Your sound effects and music. Why do I have a ZIP instead of an SB3? Open the Scratch Online Editor , go to
Delete the .zip at the end of the filename and type .sb3 instead. Open the Scratch Online Editor