PdfMod is described as 'Provides page reorder, rotation, removal, image export, metadata editing, and document merging for PDFs on Linux through a simple open-source interface' and is a PDF Editor in the office & productivity category. There are more than 50 alternatives to PdfMod for a variety of platforms, including Windows, Linux, Mac, Web-based and Flathub apps. The best PdfMod alternative is PDF Arranger, which is both free and Open Source. Other great apps like PdfMod are Stirling-PDF, PDFsam, PDF24 Creator and Adobe Acrobat DC.
Does the same job, much faster to load document.