Yes. I have a 10-page. Then I pared it down to 5 pages, 2 pages, 1 page, 3-5 paragraphs, and 1 paragraph.
I find that agents tend to ask for 3-5 paragraph or 1 page synopses. When they don't specify, I tend to give them a 1 page anyway -- I don't want to scare them with a 10-page mini-series!
What I did was go through chapter by chapter and write down what that chapter was about, in one paragraph or two. By the time I was done with it, I had an outline for a synopsis. Then I just trimmed and added, depending on what I needed. The process worked out pretty well for me.