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Usual basic criteria for images in digital print are
Is there a possibility to compare user uploaded image to placed print standard?
(Using PHP and perhaps some extension e.g. ImageMagic)
Idea is if user uploads bad print quality image e.g. jpg 100x100px @ 72dpi notice user in proper way. But after all research I have made, couldn’t define some model how to extract uploaded image data and do compare/check.
Any idea how to aproach this problem would be appreciated
You have Imagick::getImageResolution to get the resolution in dpi and you have getimagesize, there you check for the channels, 4 is cmyk, 3 rgb.