Step 1: Supply your EPUB files using the button above or by haul and lay.
Step 2: Click the 'Convert' button to start the conversion.
Step 3: Get your converted CBZ files.
EPUB to CBZ Conversion FAQ
What does the EPUB to CBZ converter do?
+
It converts a EPUB file into CBZ format.
Will the data inside my EPUB be preserved when converting to CBZ?
+
Yes — the content is mapped to the CBZ equivalent. Format-specific extras that CBZ does not represent natively are omitted rather than corrupted.
Is the EPUB to CBZ conversion reversible?
+
You can convert the CBZ back to EPUB on this site. If either format involved is lossy, the round-trip is not bit-perfect even though it is visually or audibly close.
What output quality should I expect from EPUB to CBZ?
+
Default settings target broadcast / web quality — visually identical to the source for most viewers. For archival use, pick the highest quality option in the converter settings.
Will the text still reflow to my screen after converting EPUB to CBZ?
+
No — this conversion pins the layout. An EPUB adapts its line breaks to whatever width and font size the reader is using; the CBZ fixes page geometry at conversion time, so on a phone you get the whole page scaled down rather than text rewrapped to the screen. That is the right trade when the layout must not move, and the wrong one when the file is for reading on a small device. EPUB reflows text to any screen size and any font size, which is what makes it readable on a phone as well as an e-reader. CBZ is a Comic Book ZIP — the same idea as CBR but built on the open ZIP format instead of RAR.
Why does my EPUB file refuse to convert?
+
DRM, in almost every case. A protected EPUB is encrypted and tied to an account, and no converter can decrypt it — ours included. Files you created yourself, or bought from a DRM-free store, convert without any trouble at all. EPUB has no fixed pagination, so page numbers are meaningless, and complex layout — tables, equations, multi-column — degrades badly.
Is there a file-size limit when converting EPUB to CBZ?
+
Free conversions have a size limit per file, set by the type of file, and the page tells you when a file is over it. A paid plan removes that limit, so much larger files can be converted.
Can I batch-convert several EPUB files to CBZ at once?
+
Several files in one job need a paid plan. Free use is one file per conversion, one conversion an hour. On a paid plan you can add several files to one job, then download each result on its own or all of them in one ZIP.
What happens to my EPUB files after the conversion?
+
Uploaded files are processed on our own conversion servers, nobody looks at them, and they are not shared. The upload and the converted file are both deleted automatically about 24 hours after the conversion, which leaves time to download the result. See /privacy/ for the full policy.
Where can I open my CBZ file?
+
CBZ opens in the standard tools for its category. Browsers and built-in OS viewers handle the common cases.
Do I need to install software to convert EPUB to CBZ?
+
No. The converter runs entirely in your browser plus our cloud — no plugin, no install, no admin rights. It works on Windows, macOS, Linux, ChromeOS, iOS, and Android.
Do I need an account to convert EPUB to CBZ?
+
Yes. One conversion an hour is free, with no account needed, for a file within the free size limit. A paid plan removes the hourly limit and the size limit, and lets you add several files to one job.
