.cbz — Comic Book Zip
A comic-book archive that is essentially a ZIP file containing page images in reading order.
About this format
CBZ is simple: it is a ZIP archive with image pages, usually named so readers can sort them in order. The format is popular for comics, manga, scanned books, and visual archives.
Use CBZ when pages are already images. Use EPUB for reflowable text books and PDF when fixed print pages matter.
Real-world samples & file sizes
Four real .cbz archives built from public-domain comic page images. Each file is a ZIP archive with ordered page names, and each preview is the first image from the same archive.
Dingbat Family CBZ
A wide newspaper strip stored in a ZIP archive with CBZ extension.
Baron Bean CBZ
A compact black-and-white comic strip packaged as a valid CBZ archive.
Little Nemo CBZ
A real CBZ archive containing one ordered comic page image.
Snookums CBZ
A public-domain comic page packaged as a CBZ sample.
Pros
- +Simple and easy to inspect
- +Works well for image-based comics
- +Many reader apps support it
Cons
- −No rich layout model
- −Large if page images are high resolution
- −Metadata support depends on reader conventions
CBZ vs other formats
| vs | Size | Quality | Note |
|---|---|---|---|
| Varies | Image-page workflow | PDF has stronger document semantics; CBZ is simpler for comics. | |
| EPUB | Usually larger for text | Image pages | EPUB is better for reflowable text. |
Where it works
- Reader app required
- Browsers can open the ZIP only with app logic
- YACReader
- Panels
- CDisplayEx
- Calibre
- MComix
Frequently asked questions
- Can I rename CBZ to ZIP?
- Yes, CBZ is a ZIP archive by convention. A reader treats the contained images as pages.
- What image size should CBZ pages use?
- Use enough resolution for the target display, often around tablet or print-page sizes, while watching total file size.
Sources
- Library of Congress - Comic Book Archive - comic archive format family