A CB7 file is a Comic Book Archive file. It is essentially a 7z archive containing a series of images, typically in JPEG, PNG, or GIF format, that represent the pages of a comic book. The images are sequentially numbered or named to ensure they are displayed in the correct order when viewed. CB7 files are used for storing and distributing digital comic books and manga. The 7z compression algorithm provides good compression ratios, reducing the file size while maintaining image quality. Comic book reader software is designed to extract the images from the archive and display them in a user-friendly manner, allowing for easy navigation through the comic book. The CB7 format is a popular choice for archiving and sharing digital comics due to its efficient compression and compatibility with various comic book reader applications. It offers a convenient way to store and read comic books on computers, tablets, and smartphones.