Image

  You may have seen many formats of image, such as BMP, WMF, EMF, TIFF, IFF, PSD, SBI, KDC, TGA, PCX and PCD. Usually, they cannot be displayed in different computers or cannot be supported by various printers. You just need to know GIF, JPEG, and PNG.

  GIF: It can combine several images together and automatically display them one by one. They look like cartoons. As a result, many Website owners prefer using it to activate Websites. Besides, many people use it for prank. Usually, a pretty lady suddenly becomes a crocodile, which is biting you. Thereby, it has been impressing people with unseriousness. Some people do not like using this format when printing, because they worry about the stableness even it only has one image. Their fear is not superfluous. They are correct. It is indeed unstable when printing. Besides, many people do know how to save as this format correctly. To sum up, it is only suitable to be viewed on computer.

  JPEG: It has many nicknames, including JPG, JPE, JIF and JFI. It is widely used in various fields. You can find and use it in all kinds of computers, Web pages, and printers, simply because it is an old and international standard format and stable enough. JPEG is as old as your grandmother is. However, its quality is not good. You could easily find the unclarity due to its immature algorithm. In spite of this, its information can be lost after compression. Sometimes, you may see the EXIF format. Many digital cameras just add useless information, such as date, time and manufacturer inside the photo. In fact, it is still JPEG.

  PNG: Many people know little about this format. Its quality is excellent. In fact, many printers and software support it very well. You can accurately control its quality. The file size of Web pages can be greatly reduced when using PNG. PNG is the best because its quality is super high. In addition, its information cannot be lost after compression. PNG is a young format. Therefore, many browsers could not support it for a certain period. However, soon, many browsers add this format inside. Currently, only third-class browsers cannot support it.

  To reduce the file size of images or photos, many people would use some software to compress them. Actually, it is an unwise method. This kind of software would simply lower quality, or stupidly decrease length and width. You cannot be happy for them. In fact, you just need to change the format to PNG. Its excellent algorithm can make your precious images or photos small enough and guarantee high quality.

  [Start]--[All Programs]--[Accessories]--[Paint] to open Paint program. Many people look down upon this program. In fact, it is the father of Adobe Photoshop. It has the basic functions of drawing and editing. Besides, it looks like free because it has been installed inside Windows operating system, just like IE. It is extremely convenient when your computer does not have Adobe Photoshop or other drawing software. [File]--[Open] to open your image or photo, and then [File]--[Save as]. You can save it as PNG format. This method can export the original PNG image simply.

  You should not save an JPG image or photo into PNG format if they have been compressed. The result is not good. To promote the speed of Web pages, all images and photos on the Internet have been compressed into JPG. The exception is resource Websites, which professionally provide original images and photos and let visitors download. To get better effect of compression, you need the original images or photos, which directly come from drawing software or your digital camera.