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PDF-XChange Viewer
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<p>PDF-XChange Viewer (now superseded by the PDF-XChange Editor) is a <a href="/facts/Freemium/ofbqmWgu">freemium</a> <a href="/facts/PDF/C9Mn1vYL">PDF</a> reader for <a href="/facts/Microsoft_Windows/bwhAhuSL">Microsoft Windows</a>. It supports saving PDF forms (<a href="/facts/AcroForms/C9Mn1vYL">AcroForms</a>) and importing or exporting form data in FDF/<a href="/facts/XFDF/C9Mn1vYL">XFDF</a> format. Since version 2.5, there has been partial support for <a href="/facts/XFA/WpwFKxLH">XFA</a>, and exporting form data in XML Data Package (XDP) or <a href="/facts/XML/clNgUfWk">XML</a> format. <a href="/facts/Optical_character_recognition/kdTyxa1l">OCR</a> support was also added in version 2.5. </p><p>Through its print <a href="/facts/Device_driver/rDYnHU1G">driver</a>, PDF files are able to be created from any Windows app that supports printing. Several PDF-related SDKs are available for developers. The following programming languages are supported: <a href="/facts/C%2B%2B/Et0F2qn9">C++</a>, <a href="/facts/C_Sharp_(programming_language)/UC2gxeyb">C#</a>, <a href="/facts/C_(programming_language)/Ky2No763">C</a>, <a href="/facts/Visual_Basic_(classic)/7QMXM6fP">Visual Basic (classic)</a>, <a href="/facts/Visual_Basic_.NET/09mPEo4q">Visual Basic (modern)</a>, <a href="/facts/Delphi_(programming_language)/sUFUXQ8r">Delphi</a>, and <a href="/facts/Clarion_(programming_language)/RqDPmxb3">Clarion</a>. </p><p>Its viewer is compatible with <a href="/facts/Wine_(software)/JF0wHs7y">Wine</a>, which provides another way to annotate PDFs on <a href="/facts/Linux/9FvCKSTq">Linux</a>. </p>