Scratch 2.0 File Format
The Scratch 2.0 File Format saves projects in version 2.0 of the Scratch programming language. Scratch is a language designed to teach programming to young children. Since the program code consists of graphical tiles rather than text-based source code, a binary format was used for the earlier Scratch 1.4 File Format, but the format has changed with 2.0. Scratch 2.0 runs from a web browser, so no installation is needed as with the earlier versions.
Scratch projects are stored in files with a .sb2 extension. The contents are ZIP-compressed data, including various items which are part of the project (.png, .svg, and .wav files, named with numbers). The main item is a file called project.json, in JSON format.
Detailed documentation can be found in the Scratch wiki.
