BMP The default image format used by Microsoft and by Windows' built-in Paint accessory. Like JPEGs, they are raster-based, meaning they use thousands or millions of pixels to compose an image. Typically, BMPs do not use compression - resulting in very large file sizes. EPS Encapsulated Post Script files are one of the industry - standard formats used in professional printing. Many commercial graphics applications - including Adobe Photoshop - and Adobe Illustrator - will output EPS files. GIF Commonly used on Web pages, Graphics Interchange Format (GIF) use lossless compression, they don’t noticeably degrade the original image, however they only use a palette of 256 colours and are unsuitable for photographs.
JPEG Joint Photographic Experts Group (JPEG) files use lossy compression, there's little difference between a moderately compressed JPEG and the original, but a heavily compressed JPEG will appear very blurry. |
PDF While it's more of a general file type than a dedicated image format, Adobe's Portable Document Format (PDF) can be put to good use in both print and Web-based projects. PSD PSD (Photoshop Document) is the proprietary file format Adobe Photoshop uses to save projects, which can contain can any combination of photographs, graphics, and text. File sizes can be very huge. Finalized PSDs are usually flattened and saved as another format, such as a TIFF, before being sent to a professional printer. TIFF Though Tagged Image File Format (TIFF) files can be saved completely uncompressed for maximum quality, you can also apply a lossless compression algorithm to decrease file size. Like PNGs and GIFs, the TIFF format supports full 24-bit colour.
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