pdfdoc | This started out as mdpdf , as in markdown-to-pdf | Document Editor library

I want to convert a UIImage array to a pdf file. PDF file page size should be A4. I tried with PDFKIT but the result is not appropriate.

What I want:

1. A4 page size
2. Image should be centered and scaled on the page(Array Images dimension is not identical)

What I tried:

I am using itext 7 pdf to generate PDF from jdbc query . It works fine for 4000 records but once we inserted 17000 records in the table, I started getting Java Out of Memory space . I am getting all the data in one shot as shown below , how do I modify it to use paginated query and stitch all the paginated results into one PDF .

This is my driver code which gets in table name and HttpServlet and passes it to class which implements ResultSetExtractor.

I have the following code

I am trying to make a program that reads one pdf and a vba user form and then fills out another pdf. I successfully wrote code to read all text in a pdf and then find certain sub strings based on tokens that I can find in the string. It is intended to populate the fields in the destination pdf based on the substrings and check the appropriate text boxes based on the user form. I can get the code to fill the substrings and then save the document, but it wont check the boxes. Before the code used a AVDoc, but I switched to a JSO because I dont want the pdf to pop up, and the jso successfully avoids that problem. I have tried various code approaches, such as pdfBool.value = cBool(vbaBool), pdfBool.value = 1, pdfBool.value = "1", jso.setValue("checked"), jso.setValue("yes"), etc. This code will run without crashing. I have reduced the number of variables to just one string and one bool for the sake of the example.

I have a very simple code that places the png image into PDF

I am using C# and iText 7.2.1.

I want to draw texts right inside rectangles. I see in document that the positioning anchor of rectangles and paragraphs are both 'left-bottom corner'. But when I use the following code, they are not at the same location. Seems they have different understanding of the Y coordinate.

My code:

GOAL

To open an existing PDF file with multiple pages and add background image to all pages. (Optionally the background image of the first page differs from the others)

In my current implementation (I use .NET 6 and PDFsharp btw.) I add the image to each page, which increases the size of the file dependent on the number of pages.

QUESTION

Is there a way in PDFsharp/MigraDoc to embed a background image only once into the document and then reference it for each page?

CODE

Both PDF document and the image come from a database as byte arrays.

I try to add an XML attachment to a PDF file with

Sample PDF download: https://drive.google.com/file/d/12wv1Pb7gh4vCKOGhX4cZ3aOrLSiOo4If/view?usp=sharing

So when the PDF is opened in A.Reader (Contineous release) it says the Certificate is invalid as Changes have been made to this document that rendered the signature invalid.

But I can't see what/where is changed. Only a Signature (certificate) was added with our own application that adds correct signatures for thousands of other PDFs. No other changes performed. Verifying the Hash with our own code or using PDFBox2 with following code says the signature is valid (true).

So why is A.Reader complaining?

Any help much appreciated as I'm banging my head to the wall for some days now...