To resize a layer on Photoshop, use the following steps: 1. On the Layer palette, click the small arrow in the bottom-left corner of the layer thumbnail to open the layer properties dialogue box. 2. In the Layer Properties dialogue box, change the width and height of the layer to match your desired size. 3. Click OK to close the layer properties dialogue box.
To resize an image in Photoshop without distorting it, use the Image Size tool. To resize an image using the Image Size tool, click on the desired size and then drag the slider to change its size.