Rotate PDF Pages Using Python

This topic describes how to update or change the page orientation of pages in an existing PDF file programmatically with Python.

Change Page Orientation

Aspose.PDF for Python via .NET support great features like changing the page orientation from landscape to portrait and vice versa. To change the page orientation, set the page’s MediaBox using the following code snippet. You can also change page orientation by setting rotation angle using ‘rotate’ method.

    import aspose.pdf as ap

    doc = ap.Document(input_pdf)
    for page in doc.pages:
        r = page.media_box
        newHeight = r.width
        newWidth = r.height
        newLLX = r.llx
        #  We must to move page upper in order to compensate changing page size
        # (lower edge of the page is 0,0 and information is usually placed from the
        #  Top of the page. That's why we move lover edge upper on difference between
        #  Old and new height.
        newLLY = r.lly + (r.height - newHeight)
        page.media_box = ap.Rectangle(newLLX, newLLY, newLLX + newWidth, newLLY + newHeight, True)
        # Sometimes we also need to set CropBox (if it was set in original file)
        page.crop_box = ap.Rectangle(newLLX, newLLY, newLLX + newWidth, newLLY + newHeight, True)

        # Setting Rotation angle of page
        page.rotate = ap.Rotation.ON90

    # Save output file
    doc.save(output_pdf)