将多页PDF转换为单个图像

import PyPDF2
from PIL import Image

def pdf_to_image(pdf_path):
    pdf_file = open(pdf_path, 'rb')
    pdf_reader = PyPDF2.PdfFileReader(pdf_file)
    num_pages = pdf_reader.numPages

    images = []
    for page_num in range(num_pages):
        page = pdf_reader.getPage(page_num)
        image = page.extractImage()
        images.append(image)

    pdf_file.close()
    return images

def merge_images(images):
    widths, heights = zip(*(i.size for i in images))
    max_width = max(widths)
    total_height = sum(heights)

    new_im = Image.new('RGB', (max_width, total_height))
    y_offset = 0
    for im in images:
        new_im.paste(im, (0, y_offset))
        y_offset += im.size[1]

    return new_im

pdf_path = 'path/to/your/pdf/file.pdf'
images = pdf_to_image(pdf_path)
merged_image = merge_images(images)
merged_image.save('output.png')