CBZ is a ZIP of images — usually JPEGs in reading order. We unpack and present them in a paginated reader with reading-order detection.

No. Files are opened entirely in your browser using local JavaScript and WebAssembly. Nothing is sent to a server.

Does it work on mobile?

Yes. The viewer is mobile-first and works on phones, tablets, and desktops.

Documents.cbz

CBZ viewer

ready

CBZ · .cbz

Open CBZ files

Comic Book ZIP — images in a zip.

Choose a fileor paste · ⌘V

About CBZ

Comic Book ZIP — images in a zip.

CBZ is a ZIP of images — usually JPEGs in reading order. This viewer unpacks the archive locally with JSZip, sorts entries with a natural-number comparator (so page2 lands before page10), and decodes each frame into a blob URL. The reader supports fit-to-width, fit-to-height, and fit-to-page modes; arrow keys and tap-zones move through the book; a slider lets you jump to any page instantly.

FAQ

What is a CBZ file?: CBZ is a ZIP of images — usually JPEGs in reading order. We unpack and present them in a paginated reader with reading-order detection.
Is my file uploaded?: No. Files are opened entirely in your browser using local JavaScript and WebAssembly. Nothing is sent to a server.
Does it work on mobile?: Yes. The viewer is mobile-first and works on phones, tablets, and desktops.