It is part of xpdf or poppler-utils software suite.Installation on Linux: wget --no-check-certificate https://dl.xpdfreader.com/xpdf-tools-linux-4.02.tar.gz&& tar -xvf xpdf-tools-linux-4.02.tar.gz && sudo cp xpd
为了支持中文,我下载了xpdf- Chinese -simplified.tar并像这样修改了add- To -xpdfrc文件cidToUnicode Adobe-GB1 /usr/local/share/xpdf-chinese-simplified/Adobe-GB1unicodeMap EUC-CN /us