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Chapter 7. Photos and File Types > Changing an Image File Format

Changing an Image File Format

Although you can change just about any graphics file type into any other file type with the right software, some formats are more useful than others. When you change file type, you change the way the file's information is organized and saved. You can decrease an image's quality by changing its format. If the format you choose doesn't “know” how to hold onto some image information, changing the format can alter or delete some of the image data.

But there are several good reasons to change your file format. The most important is that JPEG, while a really useful format for many things, is a bad format for image editing. Every time you make changes to a JPEG file and resave it, the quality of the image gets worse, no matter what quality setting you choose. (See more about quality settings below.) In our opinion, one thing that distinguishes good editing software from bad is the ability to change a JPEG into a TIFF file—an excellent format for editing.


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