Tools/materials: Take win 10 system, drawing tools and pictures in jpg format as examples.

1. First, double-click on the desktop to open the "jpg format picture" icon.

2. Then in the drawing tool interface, the size of the picture displayed at the bottom is192.9KB..

3. Then in the drawing tool interface, click the Resize option.

4. Then in the drawing tool interface, select the "Percentage" option.

5. Then in the drawing tool interface, enter the appropriate reduction ratio.

6. In the drawing tool interface, click OK.

7. Finally, in the drawing tool interface, the size of the picture displayed at the bottom is reduced to 93.9KB.