Love the plug-in but it is throwing an error on PDF files. Not a big problem but it is disturbing to my users when I have debug mode turned on. I am getting
Notice: getimagesize() [function.getimagesize]: Read error! in /mysite/wp-content/plugins/ewww-image-optimizer/ewww-image-optimizer.php on line 1306. Unsupported file type
It seems to show this error only on the latest PDF file. The others show “Unsupported file type” on the media library list, as I would expect.