function setCompressionQuality($image_path, $quality) { $backgroundImagick = new \Imagick(realpath($image_path)); $imagick = new \Imagick(); $imagick->setCompressionQuality($quality); $imagick->newPseudoImage( 640, // $backgroundImagick->getImageWidth(), 480, // $backgroundImagick->getImageHeight(), 'gradient:red-blue' ); $imagick->compositeImage($backgroundImagick, \Imagick::COMPOSITE_ATOP, 0, 0); $imagick->setFormat("jpg"); header("Content-Type: image/jpeg"); echo $imagick->getImageBlob(); }