I don't see where you mention what version of ColdFusion you are using, but if
you are using CF8+ then here is what I do. I also have a site that uploads
images.
<cfimage action="read" source="C:\ImgStore\TheUploadedImage.jpg" name="myImage">
<cfset Info = ImageInfo(myImage)>
<!--- LOOK AT THE COLORSPACE TO SEE IF IT IS AN IMAGE THAT A BROWSER CAN USE
--->
<cfif NOT FindNoCase("CMYK", Info.colormodel.colorspace)>
<!--- DO SOMETHING WITH THE IMAGE --->
<cfelse>
<!--- DELETE THE IMAGE OR DO SOMETHING ELSE WITH THE IMAGE --->
</cfif>
HTH
Chuck
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