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Chapter 3. Creating Adobe PDF Files > About compression and resampling

About compression and resampling

Many factors affect file size and file quality, but when you’re working with image-intensive files, compression and resampling are important.

You can 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. The default Adobe PDF presets use automatic (JPEG) compression for color and grayscale images and CCITT Group 4 compression for monochrome images.


  

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