FAQ
FAQ
- Can I change metadata of a PDF file?
- Can UniPDF compress and optimise PDF documents?
- Can UniPDF make a PDF uneditable?
- Does UniPDF support bitonal encoding (CCITT/JBIG2)?
- Extracting text and data from PDF files
- How can I get a trial UniPDF license code?
- How PDF coordinate systems work with UniPDF
- How to add a watermark to PDF
- How to add an invisible text layer for search
- How to add annotations to a PDF
- How to apply digital signatures with UniPDF
- How to create a PDF report in landscape mode
- How to create a signature appearance with text and image
- How to create PDF reports in Golang
- How to export PDF to image file
- How to fill and flatten PDF forms
- How to generate a table inside a PDF
- How to generate PDF invoices in Golang
- How to get PDF page size
- How to implement text search and replace
- How to insert a barcode into a PDF
- How to insert an image into a PDF
- How to load the UniPDF license key?
- How to lock a PDF document with a password
- How to merge multiple PDF documents
- How to open an encrypted locked PDF
- How to reduce the size of generated PDF reports
- How to self sign a PDF document
- How to set and get PDF document outline
- How to sign a PDF with an external signing service
- How to sign and timestamp a PDF
- How to use CJK font to render text
- How to view UniPDF purchased license key
- Installation and first applications
- PDF viewer opens but UniPDF says encrypted
- UniPDF Package Overview
- UniPDF Video Tutorials
- Using color in PDF documents
- Why is SignatureHandler called twice?