How do I keep copied pictures from the Internet clear after copying and enlarging?

How do I keep pictures I copy from the internet clear once I copy and blow them up. I do allot of low level flyers and brochures. Most often, the pictures look clear on my computer screen. But once I blow them up and print them, they look distorted. Is there a program that I can use to enhance or preserve the look of the pictures? Or is it my computer? Do I need an upgrade? Please Help!!!How do I keep copied pictures from the Internet clear after copying and enlarging?
When you blow them up, they get pixelated because you can't increase the resolution from the original - so when you increase the size the pixels sort of spread out. You really just need to start with a larger, higher resolution image. Many pictures on the net are lower resolution to reduce the bandwidth stream and increase page loading times.How do I keep copied pictures from the Internet clear after copying and enlarging?
You can never preserve the quality of a pic when you blow it up!


Technically what you do is to give the pixels more space between them and that degrades the quality.


Try finding high res-pictures, that will give a better result.