: Go to the Scratch Editor , click File > Load from your computer , and select your new .sb3 file. 2. Modern Conversion Tools (Updated 2026)
While manual renaming is the standard, several modern tools offer more advanced ways to package or modify these files:
: Select all those files and compress them into a new ZIP archive.
: If your computer asks if you're sure you want to change the extension, click Yes .
If you have a collection of Scratch assets (like sprites, sounds, and a project.json file) inside a ZIP folder and want to turn it back into a playable Scratch project, follow these steps:
Below is the updated guide for 2026 on how to handle these conversions manually and with modern tools. 1. The Manual "Rename" Method
The quick way to is simply to rename the file extension from .zip to .sb3 . This works because an SB3 file is essentially a renamed ZIP archive containing a project.json file and all associated media assets.
: Go to the Scratch Editor , click File > Load from your computer , and select your new .sb3 file. 2. Modern Conversion Tools (Updated 2026)
While manual renaming is the standard, several modern tools offer more advanced ways to package or modify these files: convert zip to sb3 updated
: Select all those files and compress them into a new ZIP archive. : Go to the Scratch Editor , click
: If your computer asks if you're sure you want to change the extension, click Yes . : If your computer asks if you're sure
If you have a collection of Scratch assets (like sprites, sounds, and a project.json file) inside a ZIP folder and want to turn it back into a playable Scratch project, follow these steps:
Below is the updated guide for 2026 on how to handle these conversions manually and with modern tools. 1. The Manual "Rename" Method
The quick way to is simply to rename the file extension from .zip to .sb3 . This works because an SB3 file is essentially a renamed ZIP archive containing a project.json file and all associated media assets.