Project doctor
Upload your own Scratch 3 project. We look for the things that make projects lag or break, and tell you how to fix each one.
Choose your project
Your file stays yours
We read the file, answer, and then delete it. We never keep your project.
What we found
Your results show here. Choose a file, then press "Check my project".
How the project doctor works
You choose your own .sb3 file. The doctor never reads anything from Scratch.
We read the file in memory and look for common problems. The file is gone as soon as we answer.
Each problem has a plain explanation and the change that fixes it.
Something wrong or not OK for kids? Report this result.