Advanced options for signing PDF files The SignFile function in Foxit Quick PDF Library lets you sign PDF files using the PKCS#12 format (containing a certificate and...
Adobe Reader or Acrobat displays a “At least one signature has problems” message when signed PDF is opened After signing a PDF file and then opening it in Adobe Reader or Adobe Acrobat the following message may be...
Programmatically extract form field data from PDF files As well as enabling you to generate form fields and fill form fields, Foxit Quick PDF Library makes it easy...
Appearance streams for PDF form fields A form field must have an appearance stream associated with it in the PDF in order for the form field...
Use NormalizePage to resolve issues with adding text to pages in PDF files If you’re experiencing issues with text not appearing correctly or in the right location on the page after using a...