CBZ to RB Converter

Batch convert cbz files to rb online. Change cbz to rb on Windows, Mac, iPhone and Android in 2 clicks.

Select files for conversion or drag and drop them to the upload area.
Your files are securely protected and available only to you.
All files are automatically deleted from our servers after 1 hour.

How to convert CBZ files to RB online?

Step-by-step instructions for converting cbz files to rb

Upload CBZ-file

Click "Choose File" button to select a cbz file on your computer. CBZ file size can be up to 100 Mb.

Convert CBZ to RB

Click "Convert" button to start conversion.

Download your RB

When the conversion process is complete, you can download the RB file.


  • ❓ How can I convert CBZ to RB?
    First you need to add file for conversion: drag and drop your CBZ file or click the "Choose File" button. Then click the "Convert" button. When CBZ to RB conversion is completed, you can download your RB file.
  • ⏱️ How long does it take to convert CBZ to RB?
    Archive conversion is pretty fast. You can change CBZ to RB in a few seconds.
  • 🛡️ Is it safe to convert CBZ to RB on AnyConv?
    Of course! We delete uploaded files immediately, and converted ones after 1 hour. No one has access to your files. File conversion (including CBZ to RB) is absolutely safe.
  • 💻 Can I convert CBZ to RB on Mac OS or Linux?
    Yes, you can use AnyConv on any operating system that has a web browser. Our CBZ to RB converter works online and does not require software installation.

Information about CBZ and RB file formats

Full name CBZ - Comic Book Archive RB (Rocket Edition eBook File)
File extension .cbr, .cbz, .cbt, .cba, .cb7 .rb
MIME type application/x-cbr
Developed by Unknown Nuvo Media
Type of format Multimedia, archive file
Description A comic book archive or comic book reader file (also called sequential image file) is a type of archive file for sequential viewing of images, commonly for comic books. The idea was made popular by the CDisplay sequential image viewer; since then, many viewers for different platforms have been created. RB (Rocket Edition eBook File) – this format of the electronic book was used at the end of the 1990s widely spread Reader Rocket eBook. The Nuvo Media organization developed the format. You can still find editions of books in RB format on some online stores. RB (Rocket Edition eBook File) – is a digital box (container) with HTML content and Metadata files with expanded information. RB format is associated with Book Designer, RB2 Project, and GEB Librarian applications.
Technical details Comic book archive files mainly consist of image files, typically PNG (lossless compression) or JPEG (lossy compression) files, stored as a single archive file. Occasionally GIF, BMP, and TIFF files are seen. In addition, folders may be used to group images. Comic book archive files are not a distinct file format; only the file name extension differs from a standard file of the given archive type.
File conversion CBZ conversion RB conversion
Associated programs CDisplay, ACBF Viewer, Calibre, ComicRack, Comic Seer Calibre, Book Designer, RB2 Project, GEB Librarian
Wiki https://en.wikipedia.org/wiki/Comic_book_archive https://en.wikipedia.org/wiki/Rocket_eBook