Content Aware Scale
Photoshop CS6 Tutorial
How to Use Content Aware Scale in Photoshop
Whenever you scale an image, all of the objects within the image scale accordingly. With the Content Aware Scale feature, you can scale the entire image and the key elements don't scale, just the space between them.
Open a new 1,024 pixel by 1,024 pixel document in Photoshop.
Using the Shape tools (u key) add three shapes to the document. Make sure that Shape is selected in the tool option bar.
Flatten the image by choosing Flatten Image from the Layer pull-down menu.
Select the entire document by choosing Select > All (Cmd/a (PC - Ctrl/a).
Choose Edit > Content Aware Scale and click-drag the sides to narrow the document. The objects hold their shape as the non-object area is compressed. Once you are satisfied, press Enter to accept the scaled image.
The Content Aware Scale feature is helpful if you have an image to resize in one direction, yet don't want to distort the content.