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Part 12. Building Web Files > Task 6 How to Optimize Files with Variable Compre...

Task 6 How to Optimize Files with Variable Compression

Variable compression enables you to alter image compression and quality in different areas of the same image. You can focus more detail around a central character or image while allowing details to erode in unimportant areas, such as the background or flat areas of color. The result is an optimized image that delivers higher quality and lower bandwidth. This task describes the compression process in Photoshop; although you can optimize a file with additional channels in ImageReady following the same process, ImageReady does not add or modify channels.

1. Open File in Photoshop

The first part of this task involves creating a mask in Photoshop. To do this, open Photoshop and select File, Open. From the Open dialog box, select the file you want to optimize.


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