Manipulating existing PDFs
These questions were answered in the scope of 7.0.x and 7.1.x versions. However, if you find links to our GitHub repo, then they should target the latest version, and you can get access to specific versions by using the Tags functionality.
Interesting repos with examples to browse would be i7js-book & i7js-examples for Java and i7ns-samples for .NET (C#).
How to add alternative text for an image in Tagged PDF?
How do I add XMP metadata to each page of an existing PDF?
Why do I get an error saying that use of extended features is no longer available?
How to add a watermark to a page with an opaque image?
How to watermark PDFs using text or images?
How can I crop the pages of an existing PDF document?
How to merge PDFs from ByteArrayOutputStreams?
How to load a PDF from a stream and add a file attachment?
How to add blank pages to an existing PDF in java?
How to tile a document and add margins to the tiles?
How to position text relative to page?
How to rotate a page 90 degrees?
How to update a PDF without creating a new PDF?
How to create a TOC when merging documents?
How to change the order of Optional Content Groups?
How to crop out a part of PDF file?
How to convert PdfStamper to a byte array?
Why does PdfStamper create a file with 0 bytes?
How to convert an A4 size PDF to a PDF booklet?
How to superimpose pages from existing documents into another document?
How to decrypt a PDF document with the owner password?
How to fix the orientation of a PDF page in order to scale it?
How to add an image watermark to a PDF file?
How to merge documents correctly?
How to set the OCG state of an existing PDF?
How to reuse a page from one PDF document into another PDF document?
How to change the zoom factor in link annotations?
How to merge PDFs and add bookmarks?
How to convert an existing A4 PDF document to an A3 booklet?
How to shrink pages in an existing PDF?
How to reorder the pages of a PDF file?
How to rotate and scale pages in an existing PDF?
How to extend the page size of a PDF to add a watermark?
Why does the function to concatenate / merge PDFs cause issues in some cases?
How to move the content inside a rectangle inside an existing PDF?
How to reorder pages in an existing PDF file?
How to add blank pages while concatenating several PDFs using PdfSmartCopy
How to add a cover page to an existing PDF document?