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Chapter 5. Enhancing Pages with Graphics... > Understanding Image Basics

Understanding Image Basics

Graphics inserted into a Web page are called inline images. The two most common graphic file formats for Web publications are GIF (Graphics Interchange Format) and JPEG (Joint Photographic Experts Group). All graphics-capable browsers support these two formats and display them without fuss. However, several other formats exist, examples being TIFF, PCX, BMP, and PNG. More recent versions of the Netscape and Mosaic browsers handle these as well by calling up helper applications, which are programs designed to display images stored in these formats. Mostly you should stick with GIF and JPG, and possibly PNG.

Note

PNG (Portable Network Graphics format) is a relatively new graphics format that might eventually be the standard for Web images. It supports True Color, which makes it better for photographic images than GIF; also, unlike JPEG, its compression is lossless (that is, its quality is not degraded when the image is compressed). It is making inroads only slowly, however.



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