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Lesson 12. Customizing PDF Output Quality > About compression and resampling

About compression and resampling

Distiller lets you choose from a variety of file compression methods designed to reduce the file space used by color, grayscale, and monochrome images in your document. Which method you choose depends on the kind of images you are compressing.

In addition to choosing a compression method, you can resample bitmap images in your file to reduce the file size. A bitmap image consists of digital units called pixels, whose total number determines the file size. When you resample a bitmap image using Distiller, the informationrepresented by several pixels in the image is combined to make a single largerpixel. This process is also called downsampling because it reduces the number of pixels in the image.


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