What is a CBR file?

A CBR file is a compressed set of .JPEG, .PNG, or static .GIF images saved in a single .RAR archive with the ".cbr" extension. It contains pages that are automatically ordered and can be presented one or two at a time. CBR files are used for storing and displaying comic books or other collections of pages.

A file decompression utility that supports the RAR format may be able to decompress CBR files and extract the images. However, they will not be displayed in a book format and will not necessarily be in the correct order.

NOTE: The Komik Reader application for Android is available for free or purchase.

Files that use the CDisplay Archived Comic Book format — be it CBR, CBZ, CBT, CB7, or CBA — can all be opened using CBR Reader, a free comic book format reader program.

Another free, open-source comic book reader program, CDisplay Ex (which was created by David Ayton, who popularized the comic book naming scheme), supports all the already mentioned formats except CBA, and GonVisor is one free reader that can open nearly all of these types of files, too.

Some other free CBR and CBZ openers include Calibre, Sumatra PDF, Manga Reader, ComicRack, and Simple Comic. Linux users may like MComix.

Tip: Some of these CBx readers, like GonVisor, can also create a CBR or CBZ file from a collection of images, super handy if you want to create your own comic book using one of these popular formats.

A dedicated eBook reader is surely the best way to open and read a CBR, CBZ, CBT, CB7, or CBA file, but if you're interested, the images and other data that make up the book can be manually extracted and viewed individually. This works because, like you learned above, these Comic Book files are actually just renamed archive files.

More Information : https://en.wikipedia.org/wiki/Comic_book_archive