Read Your CBZ Comics on Kindle and Apple Books

A .cbz is nothing exotic - it is a ZIP file full of page images. That simplicity is why it became the standard way to keep digital comics, and also why the two biggest reading platforms will not touch it. Drag a CBZ onto a Kindle and nothing happens. Open it in Apple Books and it is not even offered.

The fix is to convert the archive to EPUB. But there is a real question worth answering first, because the honest answer for some readers is don't bother.

Which readers actually need the conversion

This is the part most guides skip. Sideload support varies enough that it is worth checking your own device before converting anything:

• Kindle - convert to EPUB. Kindle devices do not read comic archives, and Send to Kindle rejects CBZ outright; it is simply not on Amazon's list of accepted formats. EPUB is accepted, as long as it is DRM-free.
• Apple Books - convert to EPUB. Apple Books handles EPUB and PDF and has never supported comic archives. Third-party iOS comic apps read CBZ directly, but if you want the comic on the same shelf as the rest of your library, it has to be EPUB.
• Kobo - do nothing. Kobo lists CBZ and CBR among the file types its e-readers support. Copy the file across over USB and it will open. Converting a comic you only ever read on a Kobo buys you nothing at all.

So the conversion is worth doing for Amazon and Apple hardware, and is pure busywork for Kobo. If you read across several devices, EPUB is the safe common denominator - it works on all three.

Do not convert to MOBI, even for a Kindle

This trips people up constantly, because a decade of forum posts and older tutorials say to make a MOBI for Kindle. That advice expired. Amazon stopped accepting MOBI through Send to Kindle in 2022. A MOBI you generate today has no supported path onto a current Kindle - you would convert it to EPUB anyway to get it there.

EPUB is now the format Amazon wants for sideloading, and it converts the file to its own internal format after it arrives. So the shortest correct route from a comic archive to a Kindle is CBZ to EPUB, then Send to Kindle.

Name the file before you convert it

Here is a detail that decides whether your library looks tidy or looks like a junk drawer, and almost nothing explains it.

An EPUB has a title field. A CBZ does not - it is a ZIP of images and there is nowhere in it to record what the comic is called. So when anything converts a comic to EPUB, it has no title to copy and falls back on the one piece of naming information available: the filename. Whatever the file is called becomes the book title your reader shelves it under.

That gives you direct control, and it is worth using:

• Rename ch01_v2_final.cbz to Sandman 01 - Preludes.cbz before uploading, and that is what appears in Apple Books.
• Keep a consistent leading pattern across a series - Series 01, Series 02 - and the volumes sort correctly on the shelf instead of scattering.
• Non-Latin titles are fine. A Hebrew or Japanese filename carries through to the EPUB title intact.

The converted file also gets a cover thumbnail taken from the first page, so between the cover and a sensible title the comic looks like a real book in your library rather than an unnamed import.

Converting a whole series at once

Comics arrive in runs, and converting thirty chapters one at a time is nobody's idea of a good evening. CBZ to EPUB takes up to 20 files in one go and returns them as a ZIP, and because each output is titled from its own filename, a batch of properly named chapters comes back correctly labelled without any further tidying.

If your files are .cbr rather than .cbz, use CBR to EPUB - same process, and no need to find a RAR utility first. Worth knowing: CBR uses proprietary RAR compression and support for it is quietly shrinking across software, which is a decent reason to move a collection off RAR while you can. If you would rather keep the archive format than convert to EPUB, RAR to ZIP repacks the same pages into the ZIP container a CBZ uses.

What EPUB will and will not do for a comic

Set expectations correctly and you will not be disappointed:

• Pages stay as images. A comic is artwork and hand lettering, so there is no selectable text and pages do not reflow the way a novel does. That is the desired outcome - reflowing a comic page would destroy it.
• Resolution is preserved. Pages are embedded at their source resolution rather than being downscaled for one particular screen, so the file stays as sharp as the scan you started from.
• Reading order follows filenames. Pages are taken in the order their names sort, exactly as a comic reader would. Archives with erratic page names are the one case worth renaming first.
• Colour is up to the device. An e-ink Kindle or Kobo renders in greyscale no matter what the file contains. Nothing is lost from the EPUB itself - the same file will be in full colour in a phone or tablet app.

Whether to use PDF instead

Both Kindle and Apple Books accept PDF too, so it is a legitimate alternative and the right answer for some people. The trade-off is straightforward: PDF gives you a fixed page that prints properly and opens in literally anything, while EPUB gives you a library entry with a cover and a title that sits alongside your other books and syncs with them. For reading on an e-reader, EPUB behaves like a book; PDF behaves like a document, with fixed pages that often need zooming on a small screen.

If printing or a fixed layout matters more to you, CBZ to PDF and CBR to PDF take the other route. Our general comic conversion guide compares the two output formats in more detail.

Doing it without handing your library to anyone

A comic collection is a personal thing, and most online converters keep your uploads on a server for hours or days. PrivConvert does not store files at all: conversion happens in memory, nothing is written to disk, and the file is gone the moment your download is ready. Filenames are not logged either - the name you give the file is used to title the book and for nothing else. No account, no installed software, no tracking. The why PrivConvert page sets out how that is enforced.