Convert an image to grayscale in HTML/CSS

Question

Is there a simple way to display a color bitmap in grayscale with just HTML/CSS?

It doesn\'t need to be IE-compatible (and I imagine it won\'t be) -- if

Answer 1

For grayscale as a percent in Firefox, use saturate filter instead: (search for 'saturate')

filter: url("data:image/svg+xml;utf8,#saturate"