The ASP.NET WebResource.axd Http Handler is used to serve resources embedded in DLL's. The LINK html tag is automatically generated by ASP.NET. I would like to intercept the generation of the LINK html tag for a certain set of embedded CSS from a third party DLL and add a media attribute. **In summary:** I would like to add a Media attribute to the LINK html tag for the ASP.NET WebResource.axd Http Handler. So this: Appears like this: Cheers