That depends on the resolution of the original file. There may be nothing
that can be done.
When you Google search for images do you see a little description below each
image? Something like these...
Siberian Tiger
400 x 404 - 62k - jpg
Royal Bengal Tiger
1600 x 1200 - 352k - jpg
These tell you roughly how much detail is in the image. The bigger the
numbers then the better the image resolution.
A $100 (US) digital camera will give you shots that look OK blown up on A4
paper. These cameras have a resolution of between 5 and 6 million pixels. The
400x404 Siberian Tiger picture has a resolution of just 160,000 pixels. In
other words it has less that 3% of the detail needed to make an OK picture on
A4 paper.
The second image - Royal Bengal Tiger 1600 x 1200 - has more pixels. 1600
multiplied by 1200 give 1.9 million pixels. This is much better resolution
and will look a lot sharper when zoomed to A4 size.
What I'm saying is that if the original image has rubbish resolution then
it's not going to look any good blown up.
I hope this helps?
Regards
Chris
