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![Is there any tool can change scanned PDF images into grayscale type? [A-PDF .com]](http://www.a-pdf.com/faq/i/a-pdf%20scan%20optimizer%20deskew%20result.gif "Is there any tool can change scanned PDF images into grayscale type? [A-PDF .com]")
Is there any tool can change scanned PDF images into grayscale type? [A-PDF .com]
4 Best Free Online Services to Convert PDF to Scanned PDF
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