Save as convert.py and run in the folder with your ZIPs.
There are websites that claim to "convert Zip to SB3." convert zip to sb3
: This usually happens if you zipped a folder containing your assets rather than selecting the assets themselves and zipping them. The project.json must be at the very top level of the ZIP structure. Save as convert
Converting a file to an (Scratch 3.0 project) file is a simple process because an file is essentially a renamed Direct Conversion Method convert zip to sb3
If you have extracted a project and only want to edit the code, you can sometimes upload the project.json file directly into the Scratch Editor