iText pdfOptimizer makes smart compression choices that save users memory space and increase speed. Rather than simply converting high-quality images into lower-quality ones using heavy JPEG compression, pdfOptimizer offers various ways to optimize PDFs. You can preserve image quality while achieving the smallest possible file size, convert image types into different file types, resize images, and convert the color space of images from CMYK to RGB. You can also check if the file or image size increased after it is processed, to ensure intelligent use of optimization. Other options include ensuring the efficient use of fonts by removing duplicate fonts or using font-subsetting.
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