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Score of 2
1 answer
164 views

I'm signing a password-protected PDF with PDFBox (version 3.0.8). I load it with the password, call addSignature, then saveIncremental, with the signature size set to 16 KB. The signature itself is ...
Score of 2
1 answer
127 views

I have a shiny app, based on an example from the posit website. I would like to produce a pdf with a custom header and footer. I usually achieve this in markdown and quarto projects by including this ...
Score of 3
1 answer
157 views

I show a PDF from my backend in an <iframe> using Chrome's built-in PDF viewer. The endpoint requires a bearer token, so Angular fetches the PDF as a Blob and gives the iframe a blob: URL. The ...
Score of 1
2 answers
169 views

I'm having trouble with the outputs of the PdfSharp library. A new feature in my application downloads a fillable PDF from our server, fills it with information based on user input, and saves it to ...
Score of 5
2 answers
229 views

I'm investigating a problem in iText (tested with recent versions of iText Core 9.5.0+ and pdfSweep 5.0.5+ and java 21) when extracting a monochrome CCITT image from a PDF like this above: << /...
Score of 2
0 answers
98 views

I am building a PDF text editor in Kotlin Multiplatform (currently running and testing on Android). The Architecture Extraction (iText7): Parse the PDF with PdfCanvasProcessor, extract character ...
Score of 0
2 answers
165 views

I am stuck with the following challenge: I am deploying a handbook for my students via GitHub, using the University of Delft TeachBook template. I now want my students to be able to run code (ideally ...
Score of 0
1 answer
76 views

My starting point is this PDF/A extension schema, slightly modified: <x:xmpmeta xmlns:x="adobe:ns:meta/"> <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#&...
Score of 0
1 answer
161 views

I am using the following code to test merging PDF's, and get an error "Unknown PDFException" at the line "Using pdfWriter As New PdfWriter(outputFile)" I have the following Imports ...
Score of 1
1 answer
162 views

I'm merging PDF pages with iText 7 using copyPagesTo. It works for most files, but a few PDFs from third parties make the copy blow up with java.lang.UnsupportedOperationException, and that kills the ...
Score of 0
1 answer
568 views

Aim Just embed a PDF (preview) into a website. This is very likely a well-known use case. Given I have this use case for showing a PDF preview, I am searching for a solution. And yes I know e.g. MDN ...
Score of 2
0 answers
202 views

I want to change bookmark (aka outline item) colors in a PDF document from black to blue. It's my understanding that pypdf can only add outline items; you can't change the properties of those already ...
Score of 2
1 answer
111 views

I'm using Pandoc to convert my Markdown (4,000 word count) file to PDF. My problem is the date won't appear on the PDF. Here's my system info: pandoc 3.7.0.2 Features: -server +lua Scripting engine: ...
Score of 1
1 answer
229 views

I am developing a Python FastAPI backend to inject PDF accessibility compliance tags (WCAG 2.1) into existing documents generated from Adobe InDesign. The layout and visual binary bytes must remain ...
Score of 0
1 answer
239 views

I use Firefox as my PDF viewer while I write them in another program. How can I make the PDF automatically refresh in Firefox when the file changes? I am open to workarounds like refreshing every 5 ...

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