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GroupDocs.Merger for Python via .NET lets you swap the positions of any two pages within a document. The result is a new document where the two specified pages have exchanged positions — all other pages remain in their original order. The swap is configured through SwapOptions.

Here are the steps to swap document pages:

• Instantiate Merger with the path to the source document.
• Create a SwapOptions object with the two 1-based page numbers to exchange.
• Call merger.swap_pages() passing the SwapOptions object.
• Call merger.save() to write the resulting document.

from groupdocs.merger import Merger
from groupdocs.merger.domain.options import SwapOptions

def swap_document_pages():
    # Load the source PDF document
    with Merger("./input.pdf") as merger:
        # Swap page 1 and page 3 — they will exchange positions in the output
        merger.swap_pages(SwapOptions(1, 3))
        # Save the document with the pages swapped
        merger.save("./output.pdf")

if __name__ == "__main__":
    swap_document_pages()

Binary file (PDF, 336 KB)

• Load source document: Merger("./input.pdf") opens the document as a context manager, ensuring resources are released on exit.
• SwapOptions(1, 3): takes two 1-based page numbers. After the operation, page 1 moves to position 3 and page 3 moves to position 1.
• merger.swap_pages(): applies the swap in memory. The original file is not modified.
• merger.save("./output.pdf"): writes the resulting document with the pages in their new order.

Tip

To move a single page to a specific position without swapping, use Move page instead.

• SwapOptions
• Merger.swap_pages()

• Move page
• Remove pages
• Extract pages