How Photoshop adjusts the size of an image

1. First we install the Phtoshop software on the computer and then open the photo to be processed.

2. Then click the "Image" menu in the Photoshop menu bar and click "Image Size" in the dropdown below.

3. When we click on the image size will pop up, "image size set up the box" here as shown in the following figure, we can set the image size and related parameters, set well then click "OK" can be.

4. Now see if the image you have set has changed the size of your settings according to your setting.

5. But sometimes the picture is not square or proportional scaling, the picture is not set after the fixed size we want, so we in the 3rd step, the constraint ratio before the check off, and then set the width and length of the document is no longer subject to the proportional constraints.