KOA File - opening and understanding

Did your computer fail to open a KOA file? We explain what they are used for and recommend software that we know can open or otherwise handle your .KOA files.

What is a KOA file?

A .KOA file is a Koala Paint (C64) bitmap file. Through our analysis of KOA files, we know that one use of the format is Koala Paint (C64) bitmap. We have not yet described in detail what these files contain and what they are used for, but our team is working tiredlessly through thousands of file formats. We'd love hearing from you if you have information about the format.

How to open KOA files

You will need a program compatible with the specific file you are trying to open, as different programs may use files with file extension KOA for different purposes.

While we have not verified the apps ourselves yet, our users have suggested 7 different KOA openers which you will find listed below.

Suggest another file format using extension KOA

While we know of one file format using the .KOA file extension, there may be more. It is widespread that different programs use files with the same file extension for very different types of data. Please let us know if you are aware of a different kind of .KOA file.

Various viewers for this file format

These apps are known to open certain types of KOA files. Remember, different programs may use KOA files for different purposes, so you may need to try out a few of them to be able to open your specific file.

ZViewerZViewerUser submitted
QuiviQuiviUser submitted
Techsoft PixEditTechsoft PixEditUser submitted
My ViewPadMy ViewPadUser submitted
Nero PhotoSnap Viewer EssentialsNero PhotoSnap Viewer EssentialsUser submitted
ReaViewerReaViewerUser submitted
We have not verified any software that we know for certain will work with KOA-files on Mac. If you know one, please use the 'Suggest a program' link below and tell us about it!
We have not verified any web services that we know for certain will work with KOA-files. If you know one, please use the 'Suggest a program' link below and tell us about it!