1. First use PS to open a photo, if the photo does not meet the requirements of the implementation dimensions, you can use the "crop" tool to crop. Tap the Crop tool, and then set the width and height parameters according to the actual width, and drag to draw the cropped area and double-click to complete the cropping process.
2. Select the "Magic Wand" tool and set the appropriate "tolerance", usually "10", click on the background area to select it.
3. Click the "Change foreground color" icon, in the open "Color picker" window, enter the red background of RGB (220,0,0), click "OK" button.
4. Select the Fill tool, set the fill content to background color, and click on the background of the photo to replace the background color of the photo.
5. Then you can do the output of the photo. Click the "file"-> "Save as Web all formats" item.
6. In the open window, switch to the "Image size" tab, according to the actual size of the picture to set, and finally click the "Save" button to save the output.Category: