Blurring or sharpening detail

You can set Smoothing in the Optimize panel to help decrease the file size of JPEGs. Smoothing blurs hard edges, which do not compress well in JPEGs. Higher numbers produce more blurring in the exported or saved JPEG, typically creating smaller files. A smoothing setting of about 3 reduces the size of the image while still maintaining reasonable quality.

To help preserve fine edges between two colors:

• Select Sharpen JPEG Edges from the Optimize panel Options menu.

  Use Sharpen JPEG Edges when exporting or saving JPEGs with text or fine detail to preserve the sharpness of these areas. Choosing Sharpen JPEG Edges increases file size.