The specific steps are as follows:

1. Use the drawing tool to open the photo to be modified, as shown in the figure (the original size of the sample is 5MB, and the pixels are 2736*3648).

2. Select Resize in the toolbar. In the pop-up dialog box, select the pixel in the "According to (b)" option, and then change the vertical pixel "3684" to "140". According to the original aspect ratio, the horizontal pixel "105" can be automatically generated, as shown in the figure.

3. Because the pixel modified in the last step is "105* 140", which is close to "100* 140", you can directly cancel the option of "keeping aspect ratio" and then change the horizontal pixel "105"

4. After the pixel is modified, click the "File" menu, select the "Save As" option, and then select the "JPEG Picture" option to save the modified picture, as shown in the figure.

The original image of 5.5MB is 37.5KB after modification, as shown in the figure.

For the same picture, saving the PNG picture format as a JPEG picture can generally reduce the picture size, or you can use your modified 4 10k picture for processing, which can basically be adjusted to within 15k, and the picture used in your resume is generally that kind of photo. If it is still not small enough, you can add some blank areas on the edge appropriately and then adjust the size.