What Is a PAT File?

How to open, edit, and convert PAT files

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.

If the file you have isn't in that format then it might be something else that uses the same PAT extension. For example, it could be a DiskStation Manager Installation file, Gravis UltraSound GF1 Patch file, 3D Patch file, or Kega Fusion Cheats file.

PAT Files

Before trying to open your file, double-check that you aren't confusing it with a file format that uses a similarly spelled file extension. You can read more about those kinds of files at the bottom of this page.

How to Open a PAT File

Pattern images can be opened with Adobe Photoshop, GIMP, Corel PaintShop, and probably some other popular photo and graphics tools as well.

If you're using Photoshop and opening the file doesn't automatically import the pattern, right-click Clone Stamp Tool from the tools bar and then select Pattern Stamp Tool from that menu. At the top of the program, choose the pattern selector to open a small menu. From there, choose the settings/gear icon and then select Import Patterns to select the PAT file.

Import Patterns option selected in Photoshop

A PAT file might instead be used as an AutoCAD Hatch Pattern file, CorelDRAW Pattern file, or Ketron Sound Pattern file. These files can be opened using Autodesk AutoCAD, CorelDRAW Graphics Suite, and Ketron Software, respectively.

DiskStation Manager Installation files are used with Synology Assistant.

PAT files that are 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 AutoCAD and SurfaceWorks can open them, so might a free text editor.

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 file but it's the wrong application or you'd rather have another installed program open it, change the default program in Windows that's used to open the file.

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 images that open in graphics programs like the ones mentioned above, you could just open the 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 to JPG, PNG, GIF, PRC, TGA, PDF, etc. The program is only free during a short trial period, so you can only convert a few files before you have to pay.

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

Still Can't Open It?

Some file formats use a file extension that looks an awful lot like ".PAT" but that doesn't mean that they are related. Similarly spelled extensions or even ones that are identical (like seen above) doesn't necessarily mean that the formats are related or that the files can be opened with the same software.

Some examples include PPT and PST, both of which share similar letters to the PAT extension but aren't actually related to the format. PST files are Outlook Personal Information Store files that open with Microsoft Outlook.

APT files share the same file extension letters but are Almost Plain Text files. These files aren't images at all but instead text files that you can open with any text editor.

  • How do you create patterns in Photoshop?

    Depending on your version of Photoshop, saving custom patterns only takes a few clicks: Open a pattern, navigate to Select > All, then go to Edit > Define Pattern.

  • How do I save .PAT files in AutoCAD?

    During pattern selection you'll be given options to either save or load individual patterns, i.e. .PAT files.

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