How to open DDOC files

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

What is a DDOC file?

DDOC files are DigiDoc digital signature files, which you can read more about below.

The DDOC 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 a DDOC opener may not be able to open all kinds of DDOC files. In this case, though, we only know of one specific use.

DigiDoc digital signature

Through our analysis of DDOC files, we know that one use of the format is DigiDoc digital signature. 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!

DDOC file openers, viewers, etc.

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

DigiDoc3 ClientDigiDoc3 ClientUser submitted
DigiDoc klientDigiDoc klientUser submitted
We have not verified any programs that we know for certain can work with DDOC-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 DDOC-files. If you know one, please use the Suggest link below and tell us about it!