All about CBZ Files

The CBZ file type is primarily associated with CDisplay.

CBZFile Extension CBZ
File extension: CBZ
File type:  compressed comic book

What is a CBZ file?

CBZ files mostly belong to CDisplay by CDisplay. The CBZ format uses encoding algorithms to compress sequential images into smaller archives. These images are displayed in the form of comic books.

  • Use: CBZ files are used to store comic books or manga in smaller sized archives so that they can be viewed in their original form without loss of quality. CBZ supports formats like PNG, JPEG, BMP and GIF, and archives them to make them easier to view in a comic book form using reader programs.
  • Adoption: While CDisplay was the first sequential image viewer to popularize this method, now CBZ files can be read throughout multiple operating systems using different reading utilities. Programs like Calibre and Gonvisor on Windows, Simple Comic on MacOS, FbReader on Android and Comix on Unix based systems enable users to read sequential images in comic book form.
  • Nomenclature: Comic book files can be compressed in RAR ZIP TAR and 7Z formats. The compression format is indicated in the filenames of the archives. The last letter in the filename specifies the compressing format used. For example, CBZ files are stored in the ZIP format, while CB7 files use the 7Z format.

How to open CBZ files

You need a suitable software like CDisplay to open a CBZ file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your CBZ file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a CBZ file directly in the browser:. Just drag the file onto this browser window and drop it.

Online CBZ File Viewer

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How to convert CBZ files to ZIP, RAR, 7Z, TAR, GZ, ...

If you want to convert or edit a CBZ file, you can use our free Online CBZ File Converter (powered by Convert.Guru):
  1. To do this, click the button "Choose your .cbz file to view" on this page.
  2. Your CBZ file will then be displayed in the browser.
  3. Now click on "Save as..." at the top of the page.
  4. Then select the file format (e.g. ZIP, RAR, 7Z, TAR, GZ, ...) you want.
  5. Download the converted file.

Programs that open and convert CBZ files:

  1. CDisplay by CDisplay
    See the previous paragraphs to learn more about the main application. CBZ files are often referred to as CDisplay compresseds because this type of file is primarily created or used by this software.
  2. Calibre (compressed comic book) by Calibre
    Calibre is an open-source e-book software released in 2006. It allows the user to organize existing e-books, display, edit or convert existing e-books and also create new ones.Calibre enables editing EPUB and AZW3 formats or ones converted to them. Calibre can open and read comic books stored in a file with a CBZ extension. This file format is classified as Compressed. Related links: Calibre Wikipedia Page
  3. Comical (compressed comic book) by Comical
    Comical is a free open source comic book viewer. It supports CBR and CBZ formats that contain JPEG PNG GIF and TIFF images. Comical includes features like zoom and rotate tools, page browser, image filters and a full screen mode. Comical can open and read comic books stored in a file with a CBZ extension. This file format is classified as Compressed. Related links: Comical Softpedia Page, Comical Wikipedia Page

CBZ file format:

The file format, which is the arrangement and type of data in a file, determines which program can open the file. The initial characters of a file are called signature, sometimes also referred to as "magic bytes". The signature can be used to infer the file format. Nonetheless, different programs can utilize the same file extension to represent distinct file formats. Double-clicking on the file often results in an error when opening. So a detailed analysis of a file is vital in order to determine the format and the associated program. In the following you will find our evaluation of the CBZ files:

The CBZ extension is very commonly used. This CBZ file itself is among the most popular common file types and predominantly uses a uniform format. But the following two file formats are common:

All the rest of the CBZ files (2%) have different formats. The category is batman, kraa, naruto, comic, tomo, generations, boruto, slayer, next or wars. Drag & drop your file here to see the file format and a preview of your CBZ file!

Technical Data for CBZ File Extension


The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

ProgramID: CDisplayZipArchive
EXEFile: %ProgramFiles%\CDisplay\CDISPLAY.EXE %1

ProgramID: CDisplayZipArchive
EXEFile: C:\F\o-Programs\VIEWER\CDisplay Sequential Image Viewer\INST\CDISPLAY.EXE %1

ProgramID: ZipZag.cbz
EXEFile: %ProgramFiles%\ZipZag\zipzag.exe %1

ProgramID: ACDSee Pro.cbz
EXEFile: %ProgramFiles%\ACD Systems\ACDSee\8.0.Pro\ACDSee8Pro.exe

ProgramID: TzRAR
EXEFile: %ProgramFiles%\TUGZip\TUGZip.exe

ProgramID: CB_CBZFormat (cbz)
EXEFile: %ProgramFiles%\ChessBase\CBReader\CBReader.exe

ProgramID: ACDSee 9.0.cbz
EXEFile: %ProgramFiles%\ACD Systems\ACDSee\9.0\ACDSeeQV.exe


a cbz compressed comic book is a special file format by CDisplay and should only be edited and saved with the appropriate software.

How to solve problems with CBZ files

  • Associate the CBZ file extension with the correct application.
  • Update your software that should actually open compressed comic books. Because only the current version supports the latest CBZ file format. Search, therefore, e.g. on the CDisplay manufacturer website after an available CDisplay update.
  • To make sure that your CBZ file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
  • Click here to open your .CBZ file online - secure, fast, and no downloads needed.
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