Remove margins from PDF files

Problem

When writing articles in LaTeX, it happens that you want to include a diagram created with gnuplot. Gnuplot creates an EPS output, but sometimes it leaves too much white space (margin) around the figure. How to get rid of that?

Solution

If someone knows a better solution, let me know. Here is how I do it. First, convert the EPS to PDF. Then use Adobe Acrobat Professional to remove the margins: open the PDF, then go to Document -> Crop Pages… Here choose the option Remove White Margins, then OK.

If you want to rotate a PDF: go to Document -> Rotate Pages…