An Ubuntu utility for converting PDF file to PNG file.

pdf_to_png.desktop

# location: /home/xxx/.local/share/applications/
[Desktop Entry]
Name=PDF2PNG
Comment=converting pdf to png
Exec=/path/to/pdf_to_png/pdf_to_png.py %U
Icon=/path/to/pdf_to_png.png
Terminal=false
Type=Application

pdf_to_png.py

#!/usr/bin/env python3
import os
import sys
import subprocess
from pathlib import Path


def convert_pdf_to_png(pdf_path):
    """
    使用ghostscript将PDF转换为高质量PNG

    参数:
    pdf_path: PDF文件的路径
    """
    try:
        # 确保输入文件存在
        if not os.path.exists(pdf_path):
            raise FileNotFoundError(f"找不到文件: {pdf_path}")

        # 获取PDF文件的路径信息
        pdf_file = Path(pdf_path)
        output_dir = pdf_file.parent
        filename = pdf_file.stem

        # 构建ghostscript命令
        gs_cmd = [
            'gs',
            '-dNOPAUSE',
            '-dBATCH',
            '-sDEVICE=png16m',
            '-r500',  # 设置分辨率为300dpi
            '-dGraphicsAlphaBits=4',
            '-dTextAlphaBits=4',
            '-dQUIET',
            f'-sOutputFile=\"{output_dir}/0xGS-{filename}-%03d.png\"',
            "\"{}\"".format(pdf_path)
        ]
        open('/tmp/pdf2png.log', 'w').write(' '.join(gs_cmd) + '\n')

        # 执行转换
        result = subprocess.run(gs_cmd)

        if result.returncode == 0:
            print(f"转换成功: {pdf_path}")
            open('/tmp/pdf2png.log', 'a').write('success' + '\n')
            return True
        else:
            print(f"转换失败: {result.stderr}")
            open('/tmp/pdf2png.log', 'a').write('failed' + '\n')
            return False

    except Exception as e:
        print(f"转换过程中出错: {str(e)}")
        open('/tmp/pdf2png.log', 'a').write('error:{}'.format(str(e)) + '\n')
        return False


if __name__ == "__main__":
    if len(sys.argv) != 2:
        print("使用方法: pdf2png.py <PDF文件路径>")
        sys.exit(1)

    pdf_path = sys.argv[1]
    convert_pdf_to_png(pdf_path)