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| Name | PCD | JPG |
| Full name | PCD, Photo CD | JPG - Joint Photographic Experts Group |
| File extension | .pcd | .jpg, .jpeg, .jpe |
| MIME type | image/jpeg | |
| Developed by | Kodak | Joint Photographic Experts Group |
| Type of format | Raster image | lossy image format |
| Description | The PCD file format is the standard format for storing images on a photo CD created by scanning images using the Kodak Photo scanning hardware. Those PCD files are afterwards used to create Photo CDs. | JPG is a commonly used method of lossy compression for digital images, particularly for those images produced by digital photography. The degree of compression can be adjusted, allowing a selectable tradeoff between storage size and image quality. JPG typically achieves 10:1 compression with little perceptible loss in image quality. |
| Technical details | Photo CD images are generally scanned in a 3072x2048 pixels resolution, but can also be stored at a resolution of 6144 x 4096 using Kodak's Pro Photo CD service. Both of these resolution sizes utilise 24-bit color. PCD images us an encoding based on gamma transformed YCC coding. | Image files that employ JPG compression are commonly called "JPG files", and are stored in variants of the JIF image format. Most image capture devices (such as digital cameras) that output JPG are actually creating files in the Exif format, the format that the camera industry has standardized on for metadata interchange. |
| Associated programs | ACD Systems Canvas 15, Corel PaintShop Pro X6, Apache OpenOffice, Corel WordPerfect Office X7, ACD Systems ACDSee 17 | Apple Safari, Google Chrome, Mozilla Firefox, Internet Explorer, Adobe Photoshop, Paint Shop Pro, the GIMP, ImageMagick, IrfanView, Pixel image editor, Paint.NET, Xara Photo & Graphic Designer. |
| Wiki | https://en.wikipedia.org/wiki/Photo_CD | https://en.wikipedia.org/wiki/JPEG |