Convert CBZ to EPUB
A CBZ file is just a zip of page images — but e-readers want a proper EPUB with reading order, page dimensions, and metadata. Tanko unpacks your CBZ, optimizes every page for your device's screen, and packages a fixed-layout EPUB that Kindle, Kobo, and every modern reading app understands.
Everything happens in your browser: no upload, no queue, no size limit, no watermark. Pick your device, drop the file, download the EPUB.
Frequently asked questions
- What's the difference between CBZ and EPUB?
- CBZ is a plain zip archive of images with no reading metadata. EPUB is a real e-book format: it declares page order, reading direction, page dimensions, and cover — which is what e-readers and Send to Kindle need to display comics correctly.
- Will the pages be optimized for e-ink?
- Yes — pages are resized to your device's exact panel resolution, converted to 16-level grayscale with dithering (what e-ink can physically show), and contrast-corrected so aged scans get a clean white background.
- Do my files get uploaded anywhere?
- No. Conversion runs entirely in your browser — the file never leaves your device. That's also why there are no size limits or queues.
- Is this really free?
- Yes. Single-file conversion with every device profile and every option is free, with no sign-up and no watermarks.