How to change the image size in PS without affecting the clarity of photos?

With the image size function in PS, you can change the image size without affecting the sharpness of photos. The operation is as follows:

Step 1: Take PhotoShop CS6 version as an example, open the picture in PS software, and press the keyboard shortcut Ctrl+J to copy a layer.

Step 2: Select "Image-Image Size" in the menu bar above PS to mainly use this function.

Step 3: On the picture size page, you can adjust the photo size by adjusting the pixel size. It's 600 pixels now.

Step 4: First enlarge the photo, with the width set to 900 pixels and the height set to 900 pixels. Click OK after adjustment, and you can see that the picture is still very clear, but the size has become larger.

Step 5: Reduce the photo to 300 pixels wide and 300 pixels high by the same steps. Click OK after adjustment, and you can see that the picture is still clear and the size is reduced.