Issues with SVG Image Mask in Firefox and IE: How to Fix Them

Creating a mask with a PNG (black circle, transparent background) and using 

-webkit-mask-image:url(images/mask.png)
has been easy for browsers like Chrome. However, I've been encountering significant difficulties in getting the mask to display properly in Firefox when using SVG.

<svg>
    <defs>
        <mask id="mask" maskUnits="userSpaceOnUse" maskContentUnits="userSpaceOnUse">
            <image width="78px" height="78px" xlink:href="images/mask.png"/>
        </mask>
    </defs>
    <foreignObject width="78px" height="78px" style="mask: url(#mask);">
        <img src="images/avatar-sample.jpg" />
    </foreignObject>
</svg>

The reason behind why this isn't functioning seamlessly in Firefox continues to elude me!

csssvgxhtml

Answer №2

To overcome the limitations of IE not understanding foreign objects, you must utilize Javascript to detect support and inject it if available, or avoid it altogether if not supported. Additionally, implementing color filters with IE is necessary to create a chromakey effect specifically for this browser. A helpful resource providing examples on how to achieve this can be found at the following link:

Answer №3

If you want your svg to be compatible with all browsers that support svg, consider rewriting it in the following format:

<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
    <defs>
        <mask id="mask" maskUnits="userSpaceOnUse" maskContentUnits="userSpaceOnUse">
            <image width="78" height="78" xlink:href="images/mask.png"/>
        </mask>
    </defs>
    <image xlink:href="images/avatar-sample.jpg" width="78" height="78"/>
</svg>

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