What is a PAT File?

How to Open, Edit, & Convert PAT Files

Picture of the PAT file icon
Adobe Photoshop PAT File Icon.

A file with the PAT file extension is most likely a Pattern Image file used by graphics programs for creating a pattern or texture across an image using a small and usually square picture.

Other kinds of software may use the PAT file extension as a DiskStation Manager Installation file, Gravis UltraSound GF1 Patch file, 3D Patch file, or Kega Fusion Cheats file.

Note: Before trying to open your file, double-check that you aren't confusing it with a PPT or PST file, both of which share similar letters to the .PAT extension.

PST files are Outlook Personal Information Store files that open with Microsoft Outlook.

How To Open a PAT File

PAT files that are Pattern Image files can be opened with Adobe Photoshop, GIMP, Corel PaintShop, and probably some other popular photo and graphics tools as well.

Note: If double-clicking or double-tapping doesn't open a PAT file in Photoshop, open the Edit > Presets > Preset Manager... menu item. Choose Patterns as the Preset Type and then click or tap Load... to select the PAT file.

A PAT file may also be used as an AutoCAD Hatch Pattern file, CorelDRAW Pattern file, or Ketron Sound Pattern file. These types of pattern files can be opened using Auotdesk AutoCAD, CorelDRAW Graphics Suite, and Ketron Software, respectively.

DiskStation Manager Installation files are used with Synology Assistant.

PAT files that are used as Gravis UltraSound GF1 Patch files can be played using FMJ-Software's Awave Studio.

3D Patch files use the .PAT file extension too. These are usually just text files that describe 3D patterns, which means while Autodesk AutoCAD and AeroHydro's SurfaceWorks can open them, so might a text editor like Notepad++.

The game emulator Kega Fusion is what's used to open Kega Fusion Cheats files that are in the PAT (patch) file format.

If you find that an application on your PC does try to open the PAT file but it's the wrong application or if you would rather have another installed program open PAT files, see my How To Change the Default Program for a Specific File Extension guide for making that change in Windows.

How To Convert a PAT File

Pattern Image files used by Photoshop and other image editors are usually just small photos that those programs repeat over a canvas to create a pattern. There isn't really a good reason to convert one to a different file format.

However, since they are image files that open in graphics programs like the ones mentioned above, you could just open the PAT file and make a small pattern, and then save it as a JPG, BMP, PNG, etc.

An actual file converter called reaConverter can convert PAT files to JPG, PNG, GIF, PRC, TGA, PDF, and lots of other formats. The program is only free during a short trial period, so you can only convert a few files before you must pay for the software.

CAD software, CorelDRAW, and Ketron Software may be able to convert PAT files that are used in those programs. If applicable, the option to save the PAT file as another format might be in the File > Save As or File > Export menu.

More Help With PAT Files

See Get More Help for information about contacting me on social networks or via email, posting on tech support forums, and more. Let me know what kinds of problems you're having with opening or using the PAT file and I'll see what I can do to help.