If the signature photo is within 100K, it can be processed by computer. The specific operation is as follows:

1. Open the computer, find the photo to be resized, click the right mouse button and select "Open Mode-Drawing";

Open the drawing software and check the photo size displayed at the bottom of the window;

Click "Resize" on the menu bar, check the pixels in the opened dialog box, and enter new data in the vertical information box below;

Close the dialog box, the photo becomes smaller, check the size of the picture below, and repeat the operation until the size shown in the picture below is 100kb.