You can select the layer to be transformed first, and then stretch the layer with the mouse.

1. Click the layer to be enlarged and reduced with the mouse. Take the People layer as an example. The background color of the selected layer will turn gray:

2. Hold down the "Ctrl" key and the "T" key on the keyboard at the same time, and the character layer just selected will be selected by a box:

3. Click the drag button on the picture box with the mouse to enlarge and reduce the picture. If you need to zoom in and out in equal proportion, you can hold down the "shift" key on the keyboard first, and then drag it to zoom in and out. After the layer conversion is completed, press the Enter key on the keyboard to complete the operation of the layer:

2. How to scale the layer in 2? PS？

Scaling the content in the layer is to hold down the Shift key and drag the four corners of the Free Transform tool after the Free Transform is turned on. The specific steps are as follows:

Materials required: PS CS6 example.

First, open the picture in PS software.

Second, I'm going to make a simple cutout here, just for a more intuitive observation. This step can be ignored.

Third, press the keyboard combination key Ctrl+T at the same time. When this key combination is pressed, the free transformation mode will be opened.

Fourth, at this time, drag the four corners of the free transformation with the mouse, and you will find that the picture will be deformed.

Fifth, the solution is to hold down the Shift key while dragging the corner, so that you can zoom in proportionally.