How to adjust the size of the first picture on the cover of WeChat official account?

The requirements of the official WeChat account for pictures are as follows:

First, the recommended size of the big picture: 900 * 500 pixels, but after uploading, the picture will be automatically compressed into a thumbnail with a width of 640 pixels (the high one will be compressed into a corresponding proportion), so you can click on the mobile phone to view the original picture;

Second, the size of the cover picture should be within 5 m, and the size of the text picture should not exceed 5 m. ..

Third, the method of setting the picture size:

Preparation tools/materials: computer, photoshop

1. Under windows, open photoshop.

2. To open the picture, you need to upload the picture on the WeChat public platform.

3. Find the image in the menu bar above.

4. Click the pop-up drop-down menu and select "Image Size".

5. Check the current image size in the image size.

6. In the picture size, change the "width" and "height" to the width and height required by the WeChat public platform.

7. After confirmation, the current size is a picture with a width of 900 pixels and a height of 500 loudness.

8. Click Save and set the save size, and then set the image size to the standard size of WeChat public platform.