What SpoofDPI does to bypass this is to send the first 1 byte of a request to the server, and then send the rest.
cp -R ~/Downloads/myFile /Applications/Something.app/Contentsfind /folder/with/images/ -name '*' -exec file {} \; | grep -o -P '^.+: \w+ image' | cut -d':' -f1 | xargs -I{} cp -v {} /destination/folder/cp -r /folder/with/files/*.jpeg /destination/folder