Duanxx technical problem: do not change the image size, reduce the image size

The school needs to take a photo in JPG format. The size is 252*312, and the size of the photo cannot exceed 25 kb.

After cropping a picture into this size, we found that the size was 37 KB.

In fact, to reduce the size of an image, the image quality is reduced. If you have software such as Photoshop, you can directly change the image quality and reduce the image size. However, Photoshop is not installed on your computer.

After thinking about it, I thought about it. Every time I use QQ to upload images, a few MB of images will be uploaded up to several hundred kb.

In order to effectively transmit images, QQ automatically reduces the image quality. Therefore, after the following steps, the image size is reduced:

Step 1: Use a picture to open my previous 252*312 photo.

Step 2: In the drawing, CTRL + C, copy the photo,

Step 3: open a QQ window, paste it in, and send

Step 4: Save the sent photo to the local device. The size of the photo is reduced from 252 KB to 17 kb, and the size of the photo is 312 x.

Duanxx technical problem: do not change the image size, reduce the image size