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CBZ

Comic Book ZIP

CBZ is a ZIP archive of page images in filename order, with the extension renamed. That is the entire specification — which is why it is the most reliable comic format there is.

Extension: .cbz
MIME type: application/vnd.comicbook+zip

01 Convert CBZ to something else

CBZ to PDF Every page, exactly as it was stored.

02 Convert something else to CBZ

CBR to CBZ The same pages, in the container every reader supports.

03 Related formats

EPUB
MOBI
AZW3
CBR

Opening a .cbz file

If you landed here because something handed you a .cbz file and nothing on your machine will open it, converting it to a format you already have a reader for is usually faster than installing new software. Every conversion above runs in this browser — the file is not uploaded, so it works on a locked-down work machine and on a file you are not allowed to send anywhere.