What is inside a CBZ file
Rename a .cbz to .zip and you can inspect it with any archive tool. You will usually find numbered images, sometimes a folder per chapter, and often a ComicInfo.xml file with the series name, volume, page count, and reading direction.
Because the pages are ordinary images, the quality of the reading experience depends on the viewer: page sorting, memory use, and spread handling matter more than the container itself.
Open a CBZ on Windows or Mac
- Fastest, no install: open the CBZ Reader in your browser and drag the file onto the page.
- With an archive tool: rename a copy to .zip, extract it, and open the images in any image viewer.
- With a comic app: most comic readers accept CBZ directly and remember your page.
Open a CBZ on iPhone or iPad
- Save the file to the Files app first. Files stored only in iCloud Drive may need to be downloaded before they can be opened.
- Open the CBZ Reader in Safari, tap "Open a CBZ file", then pick the archive from Files.
- iOS does not let a website register as the default handler for .cbz, so you cannot long-press a file and choose the site. Opening the site first is the reliable route.
Open a CBZ on Android
- Open the site in Chrome and use the file picker, or drag the file in on a tablet.
- If you install the site to your home screen, Android can share a file to it from the Files app.
- Android file pickers are generally more tolerant of the .cbz extension than iOS.
Why the pages are out of order
Computers sort text alphabetically by default: 1.jpg, 10.jpg, 11.jpg, 2.jpg. Comic archives expect numeric order. A reader that does not use natural sorting will show page 10 before page 2. This reader sorts numerically and falls back to the full path when two files share a number.