Did you this ZIP file, or did an existing project file suddenly break?
When Scratch fails to open a file, it usually means the project.json file has broken code syntax, or there is a mismatch between the assets listed in the code and the actual files inside the archive. Step-by-Step Fix: Convert ZIP to SB3 convert zip to sb3 fix
Follow these precise steps to package your assets into a functional .sb3 file that Scratch can read without errors. Step 1: Prep Your Project Files Did you this ZIP file, or did an
Go inside the extracted folder. You should see project.json . Step 1: Prep Your Project Files Go inside
Note: Do not zip the parent folder itself; zip the files inside it. Rename the Extension Locate your new Right-click and select Change the file extension from Confirm the Change
: Select all the individual files and folders inside your working directory. Right-click and choose Send to > Compressed (zipped) folder (on Windows) or (on macOS).