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Having problems opening a HMK file?

Learn about files with extension HMK

HMK File - opening and understanding

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

What is a HMK file?

A .HMK file is a Hallmark Card Studio file. Through our analysis of HMK files, we know that one use of the format is Hallmark Card Studio file. 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.

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How to open HMK 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 HMK for different purposes.

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

Suggest another file format using extension HMK

While we know of one file format using the .HMK 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 .HMK file.

Various viewers for this file format

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

We have not verified any software that we know for certain will work with HMK-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 HMK-files. If you know one, please use the 'Suggest a program' link below and tell us about it!