mupdf VS Apache PDFBox

Sioyek uses the MuPDF engine, which supports EPUB: https://mupdf.com/

MuPDF mini (version 1.23.3a): Minimalist viewer for PDF, XPS, CBZ, unprotected EPUB, and FB2 documents

mupdf is the mupdf of epub; it supports epub and other formats beyond pdf¹. When I've had really large files I've used mupdf to read them a few times, as it seems to be far better at handling them than other tools.

¹ https://mupdf.com/

Mupdf https://mupdf.com MuPDF is a lightweight bla…

Doesn't exactly fit your requirements, but might as well mention it here: muPDF - the most lightweight PDF viewer that I've ever seen. You don't even have to install it. Mobile version exists by the way.

MuPDF viewer (version 1.21.0a): Lightweight document viewer

Mupdf is nice https://mupdf.com/

I don't see anything about that on ArchWiki or MuPDF's website. Could you provide details on how it is obsolete and what critical vulnerabilities it has?

poppler ou muPDF para pré-visualizações de PDF

I think you might mean PyMuPDF (https://github.com/pymupdf/PyMuPDF), a Python library built on top of the MuPDF C library (https://mupdf.com/).

PyMuPDF and MuPDF are both available under dual open source AGPL and commercial licenses. They have been around for many years and are under continual development.

[Disclaimer, i work for Artifex, who wrote MuPDF and recently acquired PyMuPDF.]

Case Study: In a real-world incident, an application experienced a deadlock due to a bug in the Apache PDFBox library. The problem arose when two threads acquired locks in opposite orders, resulting in a deadlock that caused the application to hang. To learn more about this case and how the deadlock was resolved, check out Troubleshooting Deadlock in an Apache Open-Source Library.

Are you looking for a way to render PDF's or produce them? If you want to produce PDF's, I've used https://pdfbox.apache.org/ successfully as well as https://itextpdf.com/ (potentially costs money).

If you don't mind using java, you can use the open source Apache PDFBox library

https://pdfbox.apache.org/

It's relatively performant and it's a mature and supported codebase that can accomplish most pdf tasks.

Then, open the pdf_utils/pom.xml file and add a dependency to PDFBox, in the dependencies section:

There are some libraries for Java that can help you create a PDF file such as PDFBox or IText. Here there's a short exaplanation on how to use them.

So, when I started to view the documents, a lot of them simply failed to open. I had to look around for a library that could verify PDF documents. I had some experience with PDFBox in the past, so it seemed to be a good go-to solution. It had no way to verify documents by default, but it could open and parse them and that was enough to filter out the incorrect ones. It felt a little bit strange just to read the whole PDF into the memory to verify if it is correct or not, but hey I needed a simple fix for now and it worked really well.