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Asked: 2026-05-24T08:00:35+00:00

What’s the difference between between IE’s filter and -ms-filter properties? If I use one

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What’s the difference between between IE’s filter and -ms-filter properties? If I use one should I use them both? Do they do the same thing, but each work on only certain versions of IE?

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  1. Editorial Team

    Microsoft introduced -ms-filter to make Internet Explorer more standards-compliant (CSS 2.1 requires vendor extensions to have vendor prefix). As the syntax of original filter property is not CSS 2.1 compliant, IE8+ requires the value of the -ms-filter property to be enclosed in quotation marks.

    filter: alpha(opacity=40);
-ms-filter: "alpha(opacity=40)";

    -ms-filter is supported in IE8+, legacy filter property is, as far as I know, for backwards compatibility supported in all versions of Internet Explorer.

    Related link: http://blogs.msdn.com/b/ie/archive/2008/09/08/microsoft-css-vendor-extensions.aspx

    Please note that support for filters may be removed in IE10.

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