How widely supported are background-size and background-origin?

And which browsers require a prefix: -moz-background-size, -webkit-background-size, and similar?

Thanks!

See CanIUse.com for a table showing browser support for this feature for all browsers and versions in common use.

Short answer: IE6/7/8 don't support it. Firefox 3.6 requires -moz- prefix. Older versions of safari might have issues. Everywhere else it should work just fine.

See https://developer.mozilla.org/en/CSS/background-size

Chrome supports it directly since 3.0; Firefox since 3.6; IE since 9.