2 people found this helpful
You didn’t explain your complete workflow, so this is just a guess. If you crop a jpeg, but leave the setting to NOT delete pixels, this will create a layered file. Since the file is no longer flattened you can’t just save over it back to a jpeg. This same thing explains your second problem too. The whole image appears in the shake reduction filter because you didn’t throw out the pixels when cropping it.
While in the crop tool, look at the top of your screen in the options bar. That’s where you will find the option to delete pixels when cropping.
1 person found this helpful
As Theresa said, any layers will make Photoshop default to Save As PSD. What you can do, is create an Action with two steps: Flatten, Save. You would set a keyboard shortcut for the Action, and the Action will replace your Save step.
Brilliant - thanks both!! Had inadvertently unchecked delete pixels!!