What is a CBZ file?
VoidSoul
A CBZ file is a comic book created in the Comic Book Zip (CBZ) format. It saves multiple images, commonly .PNG or .JPEG files, organized into pages of the comic. CBZ files are similar to .CBR files but use .ZIP compression instead of .RAR compression.
CBZ file can be read using many different comic book viewers, including Comical and Calibre. You can also extract CBZ files with a decompression program and view the enclosed images manually. However, the order of the extracted images may not be correct.
NOTE: The Komik Reader application for Android is available for free or purchase.
Learn more at wikipedia