| .P3L | Adobe Systems Incorporated | Datatiedostot | Adobe Photoshop Light Preset File | Adobe Photoshop | Adobe Systems Incorporated |
| .PAM | Open Source | Rasterikuvatiedostot | Portable Arbitrary Map | Adobe Photoshop | Adobe Systems Incorporated |
| .PAT | Autodesk, Inc. | CAD-tiedostot | AutoCAD Hatch Pattern File | Adobe Photoshop | Adobe Systems Incorporated |
| .PCD | PokéCheats | Pelitiedostot | Pokémon Wonder Card File | Adobe Photoshop | Adobe Systems Incorporated |
| .PCX | ZSoft Corporation | Rasterikuvatiedostot | Paintbrush Bitmap Image File | Adobe Photoshop | Adobe Systems Incorporated |
| .PGM | Jef Poskanzer | Rasterikuvatiedostot | Portable Gray Map Image | Adobe Photoshop | Adobe Systems Incorporated |
| .PIP | Microsoft Corporation | Asetustiedostot | Office Personalized Settings File | Adobe Photoshop | Adobe Systems Incorporated |
| .PJP | Joint Photographic Experts Group | Rasterikuvatiedostot | JPEG Image | Adobe Photoshop | Adobe Systems Incorporated |
| .PJPEG | Microsoft Corporation | Rasterikuvatiedostot | Progressive JPEG Image | Adobe Photoshop | Adobe Systems Incorporated |
| .PLUGIN | Adobe Systems Incorporated | Laajennustiedostot | Adobe Photoshop Plugin | Adobe Photoshop | Adobe Systems Incorporated |
| .PPM | The GIMP Development Team | Rasterikuvatiedostot | Portable Pixmap Image File | Adobe Photoshop | Adobe Systems Incorporated |
| .PSB | Adobe Systems Incorporated | Rasterikuvatiedostot | Adobe PhotoShop Big File | Adobe Photoshop | Adobe Systems Incorporated |
| .PSD | Adobe Systems Incorporated | Rasterikuvatiedostot | Adobe Photoshop Document | Adobe Photoshop | Adobe Systems Incorporated |
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