Files with svgb file extension can sometimes be found as binary version of classic SVG vector image.
SVGB file extension - Binary encoded SVG picture image
What is svgb file? How to open svgb files?
File type specification:
The svgb file extension is used for a binary encoded version of SVG image.
Seems to be obsolete format.
The svgb is also shortcut for SVG Basic, a SVG definition for higher-level mobile devices, like PDAs.
This svgb file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.