Html printed page resolution (or size in pixels)

Does anybody know what is the resolution that will be used to render a printed HTML page. I'd like to know what size (in centimeters or inches) will be a printed image of say 500x500pixels. I know this value will change if I set the zoom value (IE and FF), but I am interested in the default value (when zoom is at 100%).

Also, is there any way of controlling thi开发者_如何学JAVAs resolution from CSS?

Thanks

either 72ppi or 96ppi, depending on combination of OS/browser. Margins are an issue too.

If this is for a site with login users, get them to set their resolution, or try to guess from the browser. Remember that anyone can change this setting on their computer.

I think you can control the size, but not the resolution, of the printed page. Relevant units of size, for print css, would include

• Centimetres (cm)
• Millimetres (mm)
• Points (pt)
• Pica (pc)
• Inches (in)
• M (em)
• X (ex)