About DjVu files

DjVu is a compressed file format that does not take up as much space as a high-resolution file format. The files are often hundreds of times smaller than files in high resolution formats.

Download DjVu program or plugin

When you click on a DjVu file, it opens in a DjVu plugin or in a program that can read DjVu. You need to download these to your computer.


Download DjVu plugin for PC via Cuminas (new window).


If you have macOS, you can download download a free app that can read djvu files.

Do this:

  1. Go to the App Store.
  2. Search for DjVu.
  3. Choose an app and download.
This is what it might look like when the file does not open automatically, so you need to do it manually.

If the file does not open

If the file does not open immediately, it is usually at the bottom of the window. Click the three dots next to the file and select "Always open files of this type". That way, the next time you click on a link to a Djvu file, it will open immediately.

Selecting the program to open the file with

If you cannot open a DjVu file, it may also be because you have not set which program to open it with.


  1. Open Settings on your computer.
  2. Click on Default apps.
  3. Click on Choose default apps by file type.
  4. You then get a long list of file types in one column and programs in the column next to it.
  5. Scroll down to ".djv" and ".djvu" and select DjVuViewer in the right column.


  1. Open Finder.
  2. Select the file and choose File > Show Info. You can also control-click the file and select View Info.
  3. In the information window, click the arrow next to Open with.
  4. Click the pop-up menu and select DjVuViewer.
  5. Click Change All.

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