Learn how to compare PDF documents programmatically using GroupDocs.Comparison for .NET. Step‑by‑step C# examples for all three display modes, page‑range filtering, and a quick overview of Adobe Acrobat's built‑in compare tool.... Odd-numbered pages (1, 3, 5 …) are source...deletions highlighted. Even-numbered pages (2, 4, 6 …) are target...