Selection of pictures in png,jpg,gif format

GIF: When using animations, such as the preload that appears when a page is loaded.

The difference between PNG and JPG:

1, PNG can be transparent, JPG cannot be transparent, so need transparent place, must use PNG.
2, PNG is lossless preservation, multiple save will not affect the quality of the picture, and JPG is compressed irreversible preservation, so a JPG image after several times will be more and more blurred.
3, JPG Small, PNG large, the General page can use JPG, never use PNG.

Selection of pictures in png,jpg,gif format