How to open AO files

Did your computer fail to open an AO file? We explain what AO files are and recommend software that we know can open or convert your files.

What is an AO file?

AO files are DAISY Authorization Object files, which you can read more about below.

The AO file extension indicates to your device which app can open the file. However, different apps may use the same file extension for different types of data. So an AO opener may not be able to open all kinds of AO files. In this case, though, we only know of one specific use.

DAISY Authorization Object

Through our analysis of AO files, we know that one use of the format is DAISY Authorization Object. 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.

We have not verified any programs yet that works with this specific format. If you know any, please use the 'Suggest a program' link below. Thanks!

AO file openers, viewers, etc.

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

InkscapeInkscapeUser submitted
ActionOutline LiteActionOutline LiteUser submitted
ActionOutline ProActionOutline ProUser submitted
ActionOutline Pro Standard EditionActionOutline Pro Standard EditionUser submitted
We have not verified any programs that we know for certain can work with AO-files on Mac. If you know one, please use the Suggest link below and tell us about it!
We have not verified any online services that we know for certain can work with AO-files. If you know one, please use the Suggest link below and tell us about it!