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Step 4. You can see the masking because it has changed color.
Go ahead and click Exit Bitmap Mode by clicking the Red Circle
with the X in it or pressing the Escape Key.
Step 5. Next, select the Optimize palette. If it's not
visible, go to Window>Optimize to bring it up.
Step 6. Now, you're already familiar with the Quality button
as that's what 's always been used to optimize your images. The
new feature is the Selective Quality right below it. That is
what you will use to optimize the area you masked out earlier.
Go ahead and click the Selective Quality icon to bring up the
dialog box.
You can experiment with the settings here but don't be afraid
to bring the quality way down. Since the area you're compressing
here is not the focal point of your image, it's OK to bring the
quality down here.
Preserve Text and Button Quality options are helpful when you
are optimizing graphics part of a navigation bar or menu.
You can also change the overlay color here by clicking the
color swatch.
Step 7. As you work with different compression settings, be
sure to Preview your settings using the preview window or by
clicking your F12 key to Preview In Browser.
Step 8. You can also modify your Selective JPEG by going to
Modify>Selective JPEG>Restore JPEG Mask as Selection. Your
masked selection will be highlighted again.
You can now make changes to the size or shape of the
selection.
I also recommend you play with the Smoothness settings on the
Optimize menu. Smoothing can help soften the jagged lines you
get when compressing JPEGs as well as reducing file size. The
higher the number the more smoothing/blurring. I used a
smoothing setting of 1 for this example.
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