How many pixels is the size of an inch electronic photo?

1 inch photo size, the effective size is 2.7 cm wide and 3.6 cm high, and the pixel value should be 300*450 when the resolution is 300 pixels/inch.

The manufacturing steps are as follows:

1. First open photoshop and click "File" >; "Open"

2. Open the image to be modified.

3. Click the cut on the left-set the size and width of the photo to 2.5cm, the height to 3.5cm and the resolution to 300 pixels in the toolbar. After cutting the photo in the appropriate position, press Enter to confirm.

4. then click image > canvas size in the menu bar.

5. Make a border below: set the width to 0.2 cm and the height to 0.2 cm, check the opposite side, and then click OK.

6. One-inch photos will be finished.