This script repackages a folder into an .sb3 file:
The easiest way to convert a ZIP file to SB3 is by using the Scratch website. Here's how:
Select (Press Ctrl + A ). Do not select the main folder itself. Right-click on any of the highlighted files. convert zip to sb3
How to Convert ZIP to SB3: A Complete Step-by-Step Guide If you are working with Scratch 3.0, you might occasionally find yourself with a .zip file that you need to open as a Scratch project. Conversely, you might have a .sb3 file that accidentally changed its extension to .zip .
| Current Format | Action | |----------------|--------| | Valid SB3 renamed to .ZIP | Rename back to .sb3 | | Folder with project.json | ZIP contents → rename to .sb3 | | SB2 or older ZIP | Use Scratch’s menu | This script repackages a folder into an
Rename the newly created ZIP file to end with .sb3 using Method 1. Method 3: Using Online File Converters
Inside an .sb3 file (which is really a renamed ZIP), you'll typically find: Right-click on any of the highlighted files
If your file throws an error or fails to load in Scratch, check for these common mistakes:
This script repackages a folder into an .sb3 file:
The easiest way to convert a ZIP file to SB3 is by using the Scratch website. Here's how:
Select (Press Ctrl + A ). Do not select the main folder itself. Right-click on any of the highlighted files.
How to Convert ZIP to SB3: A Complete Step-by-Step Guide If you are working with Scratch 3.0, you might occasionally find yourself with a .zip file that you need to open as a Scratch project. Conversely, you might have a .sb3 file that accidentally changed its extension to .zip .
| Current Format | Action | |----------------|--------| | Valid SB3 renamed to .ZIP | Rename back to .sb3 | | Folder with project.json | ZIP contents → rename to .sb3 | | SB2 or older ZIP | Use Scratch’s menu |
Rename the newly created ZIP file to end with .sb3 using Method 1. Method 3: Using Online File Converters
Inside an .sb3 file (which is really a renamed ZIP), you'll typically find:
If your file throws an error or fails to load in Scratch, check for these common mistakes:
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