Kindle Comic Converter Supported Formats: Inputs and Outputs Explained

Kindle Comic Converter (KCC) — the free, open-source converter at github.com/ciromattia/kcc — reads the common comic archive formats (CBZ, CBR, CB7) plus PDF, and writes the formats e-readers actually display well: EPUB, MOBI/AZW3, KEPUB for Kobo, and CBZ. The browser version of the same engine at mangaconverter.com additionally accepts plain ZIP, RAR and 7Z archives and EPUB as input. Here is the full picture, and which output you should pick for your device.

Input formats: what you can feed it

• CBZ — a ZIP archive of page images, the most common comic format.
• CBR — the same idea in a RAR archive.
• CB7 — the 7-Zip variant, rarer but fully supported.
• ZIP / RAR / 7Z — plain archives of images work too; the .cbz/.cbr extension is just a naming convention.
• PDF — scanned or exported comic PDFs are unpacked page by page. If your manga only exists as a PDF, see Manga PDF to EPUB.
• EPUB — already-packaged comics can be re-processed for a different device (browser version).

Desktop KCC also takes bare folders of images, which is handy when you've assembled pages yourself.

Output formats: what to pick

EPUB is the default answer. It's the open standard, Amazon's Send to Kindle accepts it directly (MOBI email support was dropped in 2022, checked August 2026), and every non-Kindle reader opens it. KCC's EPUB output has pages pre-sized to your device profile, right-to-left page order for manga, and e-ink-tuned contrast. Start at CBZ to EPUB or CBR to EPUB.

KEPUB is EPUB with Kobo's extra markup. On a Kobo it unlocks the faster comic renderer and keeps reading statistics working — a plain EPUB reads fine but loses those. If you own a Kobo, always pick KEPUB: CBZ to Kobo.

MOBI/AZW3 matters for older Kindles that predate EPUB support, loaded over USB. For any Kindle from the last several years, EPUB via Send to Kindle is the smoother path — see CBZ to MOBI if you specifically need it.

CBZ as an output sounds circular but isn't: KCC can apply its page processing (resizing, splitting spreads, contrast) and hand you back a clean CBZ for comic apps on tablets and phones, or for archiving.

What KCC does not convert

KCC is an image-pipeline tool, so a few things are out of scope:

• DRM-protected files. Books bought on Kindle or Kobo stores are locked to their platforms; no legitimate converter opens them.
• Text-first ebooks. A prose novel in EPUB doesn't benefit from a comic pipeline — KCC's job is pages-as-images.
• Loose image formats as output. It writes books, not folders of JPGs.

Format limits in the browser version

The free browser version at MangaConverter handles up to 20 files at once, 1GB per file, up to 1000 pages each — enough for omnibus volumes. You pick a device profile (Kindle, Kobo, reMarkable models), see a live preview of the converted pages, and download the result. Uploads are deleted automatically after 24 hours.

Cheat sheet

For the settings that go with each format — device profiles, manga mode, spread handling — see the Kindle Comic Converter guide and Kindle manga converter settings.