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?
If your sprites or sounds are missing after conversion, check the original ZIP. If the files were renamed (e.g., from a1b2...png to costume1.png ), Scratch won't be able to find them. The filenames inside the ZIP must match the references inside the project.json file.
Open the Scratch Online Editor , go to , and select your new file. Method 2: Re-Zipping Extracted Files convert zip to sb3
If you’ve ever tried to open a Scratch project only to find a folder full of JSON files and random assets instead of a playable game, you aren’t alone. Many users accidentally end up with a ZIP file when they meant to have an .sb3 file.
Converting ZIP to SB3 is less about "converting" and more about "relabeling." Because an SB3 file is a ZIP file, a simple name change is usually all it takes to get back to coding your masterpiece. The "brain" of your project containing all the
In 90% of cases, you don’t need a converter tool. You simply need to tell your computer to treat the ZIP as an SB3. Locate your ZIP file on your computer. the file and select Rename .
In this guide, we’ll break down exactly what these files are and the foolproof ways to convert your ZIP archive back into a working Scratch 3.0 project. What is an SB3 File? Why do I have a ZIP instead of an SB3
If your project is currently a full of files (like project.json and various images), you need to package them back up correctly. Open the folder containing the project files.