This addon for blender can export files as .bjw for use in other software
This addon adds a new tab under file>export
You can click BJW (.bjw) to export it as .bjw for other usage
importing into scratch is done by simply pasting the contents of the file into the custom block provided
To install into blender, simply download the zip on the releases tab
Go into blender and click edit, preferences, then add-ons
When inside, Click the small arrow on the right and select install from disk
Then find the zip file and install it