Need to know several methods and techniques for web page graphics

[Aashirya]

With the continuous development of Internet growth, Internet web page on the production has become an emerging science. Page inevitably contains a certain amount of graphics, because the more images in it more attractive and give visitors the same time provide more direct information, and images are also less susceptible to computer platforms, geographical and language restrictions, make web pages more show producers creativity. That is the reason I need to know several methods and graphics options available on the net.

[deveritt]

GIF (Graphic Interchange Format Graphics Interchange Format) is a cross-platform development of the consumer market, when the consumer has no opportunity to use "high-end" graphics card, most computer graphics color of less than 256 colors, so 256 colors used as a the maximum number can be displayed. GIF is also used on the earliest Internet, the most widely used image format. GIF format 8 / point-to-l bit / point images.

[Techguru01]

The principle is to reduce the median of each point of storage to reduce image file size, this is what we commonly referred to as subtractive dithering dithering. Precisely, GIF image palette to reduce the number of colors, resulting in storage reaches the purpose of reducing the image file size. The palette is not normally the standard Windows itself withered shade guide, but after the image is optimized palette

[johnson22]

When you view a local system of the image, usually the image is displayed on all at once with little to do with what is stored, but in the Internet network is not the case, when the slowly through the Internet to download one, including images file, the browser can be downloaded while receiving the contents of the side show, this time you can see the image files displayed in the order, GIF images stored by default in order of top to bottom, left to right. When downloaded to the half, only the top half of the image displayed. If the download very slow and the lower half of the image is the key part, you must wait for the emergence of lower half of the image, which is quite annoying for users.

[Jackson2]

GIF interlacing allows images, this time is no longer strictly from top to bottom, a line-pixel line pixel display, but once every eight-line processing, and then to fill the gap until you clear up the meantime. The download process is like a broad-brush sketches into a clear color images, interlaced GIF files after the change in volume is not. This effect is mainly used to deal with some handling large size images.