| .P3L | Adobe Systems Incorporated | Fichiers de données | Adobe Photoshop Light Preset File | Adobe Photoshop | Adobe Systems Incorporated |
| .PAM | Open Source | Fichiers Raster Image | Portable Arbitrary Map | Adobe Photoshop | Adobe Systems Incorporated |
| .PAT | Autodesk, Inc. | Fichiers CAD | AutoCAD Hatch Pattern File | Adobe Photoshop | Adobe Systems Incorporated |
| .PCD | PokéCheats | Fichiers de jeu | Pokémon Wonder Card File | Adobe Photoshop | Adobe Systems Incorporated |
| .PCX | ZSoft Corporation | Fichiers Raster Image | Paintbrush Bitmap Image File | Adobe Photoshop | Adobe Systems Incorporated |
| .PGM | Jef Poskanzer | Fichiers Raster Image | Portable Gray Map Image | Adobe Photoshop | Adobe Systems Incorporated |
| .PIP | Microsoft Corporation | Fichiers de paramètres | Office Personalized Settings File | Adobe Photoshop | Adobe Systems Incorporated |
| .PJP | Joint Photographic Experts Group | Fichiers Raster Image | JPEG Image | Adobe Photoshop | Adobe Systems Incorporated |
| .PJPEG | Microsoft Corporation | Fichiers Raster Image | Progressive JPEG Image | Adobe Photoshop | Adobe Systems Incorporated |
| .PLUGIN | Adobe Systems Incorporated | Fichiers de plugin | Adobe Photoshop Plugin | Adobe Photoshop | Adobe Systems Incorporated |
| .PPM | The GIMP Development Team | Fichiers Raster Image | Portable Pixmap Image File | Adobe Photoshop | Adobe Systems Incorporated |
| .PSB | Adobe Systems Incorporated | Fichiers Raster Image | Adobe PhotoShop Big File | Adobe Photoshop | Adobe Systems Incorporated |
| .PSD | Adobe Systems Incorporated | Fichiers Raster Image | Adobe Photoshop Document | Adobe Photoshop | Adobe Systems Incorporated |
de 1 
