All about HMK Files

The HMK file type is primarily associated with Hallmark Card Studio.

HMK	File extension: HMK
	File type:	greeting card project

What is an HMK file?

HMK files mostly belong to Hallmark Card Studio by Creative Home. A HMK file is a project created with Hallmark Greeting Card Studio greeting card design software. It contains a greeting card such a birthday card, ceremony invitation etc. The HMK file only contains a card's layout formatting, and other metadata. It does not contain images and animations used in the project. To share a digital copy of a HMK greeting card, the author must use the email function provided by Hallmark Card Studio. Users can also export a greeting card project as a PDF document or print the card.

How do you open HMK files?

You need a suitable software like Hallmark Card Studio from Creative Home to open an HMK file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your HMK file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a HMK file directly in the browser:. Just drag the file onto this browser window and drop it.

Online HMK Text Viewer

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HMK file format:

The file format determines how the data is stored in the file. The first characters in a file identify the file format, for example, HTML files start with the bytes <html>. However, different programs can use the same file extension. Furthermore, a file extension can be renamed incorrectly and double-clicking on it will then display an error when it is opened. When there is a problem with a file, the first step to solving it is to determine the file format. Our examination of the HMK files comes to the following conclusion:

The HMK file extension is rarely used and includes various formats for various programs. The two most common formats are as follows:

50% of all HMK files are using the well-known XML file format to store the data. The Extensible Markup Language (XML) is a simple text-based format for representing structured information: documents, webpages, data, configuration, books, transactions, invoices, and much more. XML defines a set of rules for encoding documents in a format that is both human-readable and machine-readable. These files are text files and can therefore be read using a text editor. The files are often between 390 KB and 2 MB in size. It is a modern file type. The following keywords are characteristic: <SummaryInfo>, <stream Index="512">/9j/4AAQSkZJRgABAAEAlgCWAAD//gAfTEVBRCBUZWNo and <PADocumentRoot Version="24.0.0.0">. These files are often associated with card, birthday and christmas, and contain personal data.
40% of all HMK files use the Microsoft Compound File format, which is also called Compound File Binary File format (CFBF or CFB) or OLE2 Compound Document format. This is a complex container format used by earlier versions of Microsoft Office and other Windows programs. The Compound Document format is always starting with the bytes D0 CF 11 E0 A1 B1 1A E1. These files contain neither text nor words, but only data. The files are 28 KB to 1 MB in size, with a median of 230 KB. Such HMK files store data about letter and xmas, and often include person-related information.

All other HMK files (10%) have no uniform format. If you want to find out which format your HMK file belongs to, just click on the button "Choose your .hmk file to analyze".

Technical Data for HMK File Extension

File classification:

Page Layout

Related files:

cl5, dsp, sb2

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

ProgramID: Hallmark.Card.Studio.Project
EXEFile: %ProgramFiles%\SierraHome\Hallmark Card Studio Special Edition\Hallmark Card Studio.exe

ProgramID: Hallmark.Card.Studio.Project
EXEFile: %ProgramFiles%\Sierra\HALLMA~1\HALLMA~1.EXE

ProgramID: Hallmark.Card.Studio.Project
EXEFile: %ProgramFiles%\CREATI~1\HALLMA~1\HALLMA~1.EXE

an hmk greeting card project is a special file format by Creative Home and should only be edited and saved with the appropriate software.

How to solve problems with HMK files

Associate the HMK file extension with the correct application.
Update your software that should actually open greeting card projects. Because only the current version supports the latest HMK file format. Search, therefore, e.g. on the Creative Home manufacturer website after an available Hallmark Card Studio update.
To make sure that your HMK file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .HMK file online - secure, fast, and no downloads needed.