how can i test a jpg image for cmyk or rgb color mode in wordpress/php?

1 comment

1. You can use getimagesize(). http://php.net/manual/en/function.getimagesize.php

   $imgDetails = getimagesize('yourimage.jpg');
   if ($imgDetails['channels'] === 4) {
       // CMYK
   } elseif ($imgDetails['channels'] === 3) {
       // RGB
   }
   

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