Novus Convert
Convert files
Ebook format

CBZ converter

A .cbz file is a comic book packaged as a ZIP archive of page images — usually JPEG or PNG — named so they sort in reading order. There is no layout logic inside; the reader simply unpacks the archive and shows the pictures sequentially.

Private for supported formats — processed in your browser

Convert supported files

Runs on your device

Drop CBZ files here

Batch files can each use a different output. Nothing uploads for local conversions.

Working inputs include camera RAW, browser-local audio/video, PDF, CBZ/CBR comics, office documents, ebooks, markup, 3D models, structured text, images, and archives.

Where CBZ comes from

Comic archives grew out of the early-2000s scanning scene, popularized by the CDisplay viewer, whose users renamed .zip files to .cbz so the app could claim them. The convention stuck and is now the standard interchange format for digital comics outside commercial storefronts.

How CBZ works

  • Standard ZIP compression around ordinary image files; renaming the file to .zip yields a working archive.
  • Page order is determined purely by filename sorting, so zero-padded numbering matters.
  • An optional ComicInfo.xml file inside the archive carries series, issue, and credit metadata.
  • Because ZIP is random-access, readers can jump to any page without unpacking the whole file.

When to use CBZ

  • Organizing personal comic and manga libraries
  • Binding scanned pages into a single readable file
  • Distributing webcomic collections and zines
  • Feeding comic readers and servers like YACReader, Chunky, Komga, and Kavita

Strengths and limitations

Strengths

  • Fully open, with no licensing anywhere in the chain
  • Trivial to create, inspect, and repair with any ZIP tool
  • Supported by essentially every comic reader
  • Preserves the original page images byte-for-byte

Limitations

  • No reflow — small phone screens force pan-and-zoom reading
  • File size is the sum of the images, often hundreds of megabytes for high-resolution scans
  • Metadata rests on the informal ComicInfo.xml convention rather than a formal standard

Compatibility

Every dedicated comic reader on Windows, macOS, Linux, iOS, and Android opens .cbz, and library servers index it directly. E-ink readers vary: Kobo devices handle it natively while Kindle requires conversion to a fixed-layout Amazon format first.

The community-standard ComicInfo.xml inside the archive stores series, issue number, writer, artist, and reading direction, and most library managers honor it.

Convert CBZ to another format

Convert other formats to CBZ