How does the social security card transmit photo authentication?

Legal analysis: the method of uploading social security photos is:

The picture size of JPG can be adjusted within a certain range by changing the compression ratio (image quality).

The higher the compression ratio, the lower the image quality and the smaller the file. Just reduce the quality coefficient of JPG file, and you can save the file smaller.

If you use Photoshop, open a 358-pixel picture and save it as JPG. A dialog box will pop up, allowing you to select the quality factor. The minimum value of this coefficient is 0 and the maximum value is 12. The smaller the number, the lower the quality and the smaller the file. You can try different coefficients. If the file exceeds 28K, change it to a smaller system value until it meets the requirements.

Change the size of JPG file with image reading software such as ACDSEE. First, change the format to BMP, and then change the format to JPG. When choosing the JPG format, set the JPG coefficient. The maximum coefficient is 100, and the file is also the largest. Reduce the coefficient until the converted file is less than 28K.

Legal basis: Article 9 of the Measures for the Administration of Social Security Cards of the People's Republic of China adopts a national uniform card face style, with the words "Social Security Card of the People's Republic of China" printed on the front and the cardholder's name, social security number, cardholder's photo, card issuing unit and other information printed on the back.