发布时间：2014-03-16 17:53:54
http://www.jan-muennich.de/easiest-way-to-remove-pdf-restrictionsEasiest way to remove PDF restrictionsIf you have a PDF that doesn’t allow some features like editing or printing but has no password, under Linux this is the easiest way to remove the restrictions: Install qpdf and decryp.........【阅读全文】
