png or jpg images?

[lenadnhm]

I want to page document with printscreen images, and people say jpg will be little when I read through the articles online. However, sometimes png format is smaller for some images, so is it better to use png for that image? or only use jpg?

PNG compresses without loss in quality. JPEG produces smaller files with loss in quality and the quality can be unacceptable depending on your settings.

If you need good quality screenshots don't use JPEG.