When saving files in Photoshop, the size of the file has a direct relationship with the quality of the picture, within a certain range, the larger the file, the better the quality of the image; the smaller the file, the worse the quality of the image. As shown:

When storing, there are three ways to adjust the file size:

1. directly on the quality of the input 0-12 numbers, the smaller the number the smaller the file, the worse the quality of the image;

2. click on the drop-down triangle, there are four options to choose from: Low, Medium, High, and Best;

3. move the buttons on the small files and large files.

The following figure shows the image quality comparison between the smallest file and the largest file: