1, open the ps software and open a picture we need to process.

2. Select the clipping tool on the left.

3. Enter our custom pixel size in the input box, and then press Enter on the keyboard to confirm.

4. Click Save As.

5. Enter a file name, and then click Save.

6. You can select the image quality here. The higher the quality, the larger the file. If you want the file to be small, drag the file below to select a small file, and the size of the current image quality can be displayed on the right. Click OK after confirmation.