CBR is a comic book archive file format used for storing comic books in digital form. It uses the RAR compression format to bundle images and comic pages into a single file. CBR files can be opened with specialized comic book reader software, providing a convenient way to read digital comics.
MOBI is an ebook format used primarily by Amazon Kindle devices. It’s based on the open standard for digital publishing and allows for content reflow and support for images, links, and embedded fonts. MOBI files are widely used for ebook distribution and are compatible with various reading apps.