Convert CBZ to PDF in Seconds

CBZ is nothing more than a ZIP archive holding a folder of sequentially-named comic page images, wrapped in a .cbz extension so comic-reader apps know to treat it as a page-turning book rather than a plain archive. That simplicity is exactly its strength for comic distribution, but it's also why most software outside of dedicated comic readers doesn't know what to do with one — a CBZ won't open as a document, won't print with page breaks, and won't preview cleanly in most file managers.

Converting to PDF removes that dependency on specialized software entirely. Every page image inside the CBZ is decoded and placed onto its own PDF page, in the exact order the archive's file names put them in, producing a document that opens in literally any PDF viewer — a browser tab, a phone's built-in reader, a printer's driver — without anyone needing a comic-reader app installed.

This tool is CBZ's counterpart to this site's CBR to PDF converter, built around the same page-preserving pipeline, but for the more common and more open of the two formats: CBZ's plain ZIP structure needs no proprietary extraction library, while CBR wraps the older, more restrictive RAR format. If a comic archive is available in both, CBZ is generally the more portable, more widely-supported choice to start from.

Pages inside a CBZ aren't explicitly numbered by any metadata — the archive is just a folder of image files, and reading order is inferred entirely from how those filenames sort. This tool reads every image filename inside the ZIP and orders them using a natural, numeric-aware sort — the same comparison JavaScript's String.localeCompare performs with its numeric option enabled — so a page named "page10.jpg" correctly sorts after "page2.jpg" instead of before it, the way a naive character-by-character sort would place it.

Getting this wrong is a real risk with comic archives specifically, since scanning and archiving tools commonly name pages page1.jpg through page99.jpg or higher without zero-padding the numbers. A plain alphabetical sort would read page10, page11, and page12 immediately after page1 and before page2 — scrambling the story. Natural sort avoids that by comparing the numeric portions of filenames as numbers rather than as character sequences, which is also exactly how this site's CBR to PDF converter orders pages, so both tools produce pages in the same reading order for the same archive.