THM File

What are THM files and how to open them

Are you having problems opening a THM file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.

What is a THM file?

THM files have multiple uses, and Thumbnail Image is one of them. Read more about the other uses further down the page.

Thumbnail Image

These files contain images and are commonly referred to as thumbnails. They are created by a variety of photo applications and hardware devices.

For example, some digital cameras save files with the .thm extension containing a small version of the photograph taken. The small file is used to display a photo preview. Video recorders do the same to display content previews very fast.

How to open THM files

We have identified one THM opener that is compatible with this specific type of THM file.

Programs that open Thumbnail Image files


Last updated: January 16, 2023

More file formats using the THM extension

Through our research of THM files, we know that the following formats exist. However, we have not yet analyzed them in detail.

  • Costa Theme
  • Program Manager Eternity Theme
  • QuickCrt Theme
  • Sony Ericsson Mobile Theme
  • StarOffice Gallery Theme

Various apps that use files with this extension

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

Microsoft Windows Media PlayerMicrosoft Windows Media PlayerUser submitted
Zoner Photo StudioZoner Photo StudioUser submitted
RealPlayerRealPlayerUser submitted
QuickTimeQuickTimeUser submitted
GOM PlayerGOM PlayerUser submitted
Picasa Photo ViewerPicasa Photo ViewerDiscontinued
PowerDVDPowerDVDUser submitted
ThermoManagerThermoManagerUser submitted
iTunesiTunesUser submitted
MAGIX Photo ManagerMAGIX Photo ManagerUser submitted

Help us help others helps thousands of users every day, and we would love to hear from you if you have additional information about THM file formats, example files, or compatible programs. Please use the links below or email us at to discuss further.