Grayscale image with CSS on Safari 5.x

Question

I am trying to show some images on a page where they should be shown in grayscale, except on mouse hover when they smoothly transition into color. I\'ve ma

Answer 1

It's really simple, actually:

• http://www.karlhorky.com/2012/06/cross-browser-image-grayscale-with-css.html
• http://jsfiddle.net/KDtAX/487/

I tried using the javascript fallback, but it really made no sense, and it was really slow on large images. This made a lot more sense. Note that there is a new syntax for grayscale, and I had to manually edit the resulting minified CSS from LESS.

Here's my mixin:

.filter (...) {
    -webkit-filter: @arguments;
    -moz-filter: @arguments;
    -ms-filter: @arguments;
    -o-filter: @arguments;
    filter: @arguments;
}

And my class:

.grayscale-hover, .home-image {
    filter: url("data:image/svg+xml;utf8,#grayscale"); /* Firefox 10+, Firefox on Android see http://jsfiddle.net/KDtAX/487/*/
    .filter(grayscale(1) blur(1px));
    filter: gray; /* IE6-9 */
    -webkit-backface-visibility: hidden; /* Fix for transition flickering */
    &:hover {
        .filter(none);
        filter: url("data:image/svg+xml;utf8,#grayscale");
    }
}

Works and tested in IE 6+, Firefox, Chrome.