A daily updated filename extension database!

HMK file extension

The table below provides useful information about the .hmk file extension. It answers questions such as:

  • What is the .hmk file?
  • What program do I need to open a .hmk file?
  • How can the .hmk file be opened, edited or printed?
  • How can I convert .hmk files to another format?

Table of Contents

We hope you find this page helpful and a valuable resource!

1 extension(s) and 0 alias(es) found in database

✅ Hallmark Card Studio Document

HMK file is a Hallmark Card Studio Document. Hallmark Card Studio is a greeting card software application.
HMK format description not yet available
Category: Document files
Application: Hallmark Card Studio
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
HMK aliases:
HMK related links:
HMK related extensions:

Other types of files may also use the .hmk file extension.

🚫 The .hmk file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

bmk, gmk, hhk, hk, hkk, hkm, hlk, hm, hml, hmm, hmo, hnk, jmk, mhk, mk

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

HTML Help AutoIndex
Warhammer 40000: Dawn of War 2 Animation
GNU Makefile
Windows Help Bookmark
Havok Movie File
MACSIMUS Metamake Data
WindLDR Bookmarks File
ROXIE Mesh Information
NMake Makefile

🔴 Can't open a .hmk file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .hmk file association, check the FAQ.

🔴 Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .hmk file extension, write to us!

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