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Want to know how to open a HMK file?

We have apps that can convert or open HMK files.

How to open HMK files

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

What is a HMK file?

HMK files are Hallmark Card Studio file files, which you can read more about below.

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

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.

Update info Upload example file

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!

HMK file openers, viewers, etc.

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 programs that we know for certain can work with HMK-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 HMK-files. If you know one, please use the Suggest link below and tell us about it!