Safe width in pixels for printing web pages?

Question

What is the safe width in pixels to print a web page?

My page includes large images and I want to make sure they will not be cut of when printed.

I know abo

Answer 1

I doubt there is one... It depends on browser, on printer (physical max dpi) and its driver, on paper size as you point out (and I might want to print on B5 paper too...), on settings (landscape or portrait?), plus you often can change the scale (percentage), etc.
Let the users tweak their settings...