Developer Posts

Programmatically convert HTML to PDF

by Conor | November 6, 2013
Foxit Quick PDF Library does not support converting entire HTML documents to PDF, however, it is possible to use a limited set of HTML tags to draw content onto pages in PDF files using the HTML text functions such as DrawHTMLText. This article refers to a deprecated product. If you are looking for support for Foxit […]
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Add links to a PDF programmatically

by Qiming Wang | October 23, 2013
Adding links to PDF files is very straight forward. A link in a PDF is actually an annotation and is placed on top of the content that you wish to link. These hotspot links can be added using the following functions: Read more about annotations and hotspot links. An example of how to use the […]
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Replace text in PDF

by Conor | October 8, 2013
Currently it is only possible to replace simple text that has not been encoded using Foxit Quick PDF Library using the scripting feature which uses Foxit Quick PDF Library behind the scenes. The function that lets you replace text is the ReplaceTag function. Basically, it is possible to replace some text in a PDF file […]
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Check to see if PDF is compressed

by Conor | October 8, 2013
There isn’t an easy way to check if a PDF contains compressed elements or not. There is not a PDF wide compression option, instead various different objects and streams in PDF files can be compressed individually, using different compression methods. So if you wanted to determine if a PDF contained any compression at all you […]
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Digital signature not visible on page after signing PDF

by Conor | October 8, 2013
When you use the SignFile function to add a digital signature to a PDF it adds an invisible digital signature which is not shown on any of the pages in the document. Instead the digital signature can be viewed by opening the PDF in Adobe Reader, Adobe Acrobat or another PDF editing application, and clicking […]
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Advanced options for signing PDF files

by Conor | October 2, 2013
The SignFile function in Foxit Quick PDF Library lets you sign PDF files using the PKCS#12 format (containing a certificate and private key). But sometimes more advanced signing options are required. This is why we’ve added two new functions: SetSignProcessPassthrough and GetSignProcessByteRange. These functions let you sign PDF files using signatures that were created externally. These […]
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Programmatically extract form field data from PDF files

by Conor | September 18, 2013
As well as enabling you to generate form fields and fill form fields, Foxit Quick PDF Library makes it easy to extract form field data or information about form fields from PDF files. In the sample code below we demonstrate how to iterate through each page in a PDF to extract information about all of […]
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