cbr
What is a .cbr file?
application/vnd.comicbook-rar
CBR is a comic-book archive convention: a RAR container whose member images are interpreted as ordered pages. The extension adds no new container structure, so page order depends on safe archive extraction and natural filename sorting, while metadata may live in an optional ComicInfo.xml member.
How to use a .cbr file
Use an example .cbr file to test RAR detection, safe image-member extraction, natural page ordering, ComicInfo metadata, and honest reporting when the available decoder cannot open a particular RAR generation.