.thm

File Type 1 Thumbnail Image File IconThumbnail Image File
File Format Standard
Usage Open manually
Rank ★ ★ ★  Common
Description

Small, icon-sized image that represents a larger image; commonly used on the Web and in clip art galleries; may be created by various photo or video editing programs; also produced by some digital cameras as small sample images of photos captured by the camera.

Open With
Windows

IconMicrosoft Windows Photos

IconMicrosoft Windows Photo Viewer

IconACD Systems ACDSee

macOS

IconApple Preview

IconOther image viewer

Updated 2007
File Type 2 Generic IconThermwood Macro File
File Format Proprietary (Thermwood)
Usage Open manually; may run a program or script when opened
Rank ★ ☆ ☆  Uncommon
Description

Macro file used by Thermwood CNC Routers; contains router machining instructions that automate router processes; a list of CNC events are also saved in a file named "hist.thm."

Open With
Windows

IconThermwood Mastercam

Updated 2007
File Type 3 Sony Ericsson Theme File IconSony Ericsson Theme File
File Format Proprietary (Sony Ericsson)
Usage Referenced by an application; not meant to be opened manually
Rank ★ ★ ☆  Average
Description

Theme file used by Sony Ericsson mobile phones; stores settings used to customize the user interface of the cell phone; includes custom window and text colors, icons, wallpaper, and other images; can be created and edited using the free Themes Creator from Sony Ericsson.

Open With
Windows

IconSony Ericsson Themes Creator

macOS

IconSony Ericsson Themes Creator

Updated July 16, 2014
File Type 4 Generic IconVideo Thumbnail File
File Format Standard
Usage Referenced by an application; not meant to be opened manually; may run a program or script when opened
Rank ★ ★ ★  Common
Description

Thumbnail image of a video clip created when the video clip is saved; stores a small image from the first frame of the video clip it represents; used for visually scanning through multiple video clips.

Video thumbnails are often created on digital video cameras and digital cameras that record video; THM files may or may not be transferred to the computer depending on what software is used to import the video; each THM file shares the same filename as the video clip it represents, i.e. "clip001.avi" and clip001.thm."

Open With
Windows

IconMicrosoft Windows Photo Viewer

IconMicrosoft Paint

IconAdobe Photoshop

macOS

IconApple Preview

IconAdobe Photoshop

IconOther picture viewer

Updated June 29, 2007
space