Documentation – Page Layout and Margins

Python-Net: Add Margins to PDF Pages

Thu, 05 Mar 2026 00:00:00 +0000

Adding margins to PDF pages can enhance readability, prepare documents for printing, or allocate space for annotations. Using Aspose.PDF for Python, developers can programmatically add margins to specific pages of a PDF without modifying the content layout.

In this code snippet, the PdfFileEditor class is used to add 0.5-inch margins to pages 1 and 3 of the input document. The margins are defined in points (1 inch = 72 points) and applied individually to the left, right, top, and bottom of each page.

Open the source PDF document.
Create a ‘PdfFileEditor’ instance.
Define the margins and pages to modify.
Apply margins using the ‘add_margins’ method.
Save the updated PDF to the output file.

from io import FileIO
import sys
from os import path
import aspose.pdf as ap
import aspose.pdf.facades as pdf_facades

sys.path.append(path.join(path.dirname(__file__), ".."))

from config import set_license, initialize_data_dir


# Add Margins to PDF Pages
def add_margins_to_pdf_pages(infile, outfile):
    # Create a PdfFileEditor object
    pdf_editor = pdf_facades.PdfFileEditor()
    # Define the margins to be added (in points)
    left_margin = 36  # 0.5 inch
    right_margin = 36  # 0.5 inch
    top_margin = 36  # 0.5 inch
    bottom_margin = 36  # 0.5 inch

    pdf_editor.add_margins(
        infile, outfile, [1, 3], left_margin, right_margin, top_margin, bottom_margin
    )

Python-Net: Add Page Breaks in PDF

Thu, 05 Mar 2026 00:00:00 +0000

Page breaks are useful when you need to split long PDF pages into multiple pages or control how content is distributed across a document. Using Aspose.PDF for Python, developers can insert page breaks at specific positions without manually editing the PDF.

This article shows how to use the ‘add_page_break’ method of the PdfFileEditor class to insert a page break at a defined vertical coordinate on a selected page. The method creates a new page and moves the content below the break point to that page.

Create a PdfFileEditor Object.
Define the Page Break Position.
Insert the Page Break.

from io import FileIO
import sys
from os import path
import aspose.pdf as ap
import aspose.pdf.facades as pdf_facades

sys.path.append(path.join(path.dirname(__file__), ".."))

from config import set_license, initialize_data_dir


# Add Page Breaks in PDF
def add_page_breaks_in_pdf(infile, outfile):
    # Create a PdfFileEditor object
    pdf_editor = pdf_facades.PdfFileEditor()
    pdf_editor.add_page_break(
        infile,
        outfile,
        [
            pdf_facades.PdfFileEditor.PageBreak(1, 400),
        ],
    )

Python-Net: Resize PDF Page Contents

Thu, 05 Mar 2026 00:00:00 +0000

Adjusting the size of PDF page content is often necessary when preparing documents for printing, fitting content into a specific layout, or standardizing page formats across a document. Using Aspose.PDF for Python, developers can resize the contents of selected pages programmatically without manually editing the document.

This article shows how to use the ‘resize_contents’ method of the PdfFileEditor class to modify the dimensions of page content for specific pages in a PDF file. By specifying the target width and height, the content on the selected pages is resized accordingly.

Create a PdfFileEditor Object.
Resize Page Contents.

Parameters:

[1, 3] – list of page numbers whose contents will be resized.
400 – the new width of the page content (in points).
750 – the new height of the page content (in points).

from io import FileIO
import sys
from os import path
import aspose.pdf as ap
import aspose.pdf.facades as pdf_facades

sys.path.append(path.join(path.dirname(__file__), ".."))

from config import set_license, initialize_data_dir


# Resize PDF Page Contents
def resize_pdf_page_contents(infile, outfile):
    # Create a PdfFileEditor object
    pdf_editor = pdf_facades.PdfFileEditor()

    if not pdf_editor.resize_contents(
        FileIO(infile), FileIO(outfile, "w"), [1, 3], 400, 750
    ):
        raise Exception("Failed to resize PDF page contents.")