PDF页面转图片批量工具：PDF每页导出高清PNG/JPEG、自定义DPI分辨率、批量处理一键导出

🖥️ 运行效果

🚀 实例简介

一款基于Python tkinter开发的桌面GUI工具，可将PDF文件的每一页转换为高清PNG/JPEG图片。支持批量添加多个PDF文件、自定义DPI分辨率（72-300）、多种输出格式选择，后台线程异步转换不阻塞界面，实时进度条显示转换状态。适用于需要将PDF文档转为图片用于演示、分享、存档等场景。

💻 核心代码

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
PDF页面转图片批量工具
功能：将PDF文件每一页转换为高清PNG图片，支持批量处理、自定义DPI、进度显示
依赖：PyMuPDF (fitz)、tkinter
"""

import tkinter as tk
from tkinter import ttk, filedialog, messagebox
import os
import threading
import platform

# 中文字体配置
CHINESE_FONT = "WenQuanYi Zen Hei" if platform.system() == "Linux" else "Microsoft YaHei"

try:
    import fitz  # PyMuPDF
except ImportError:
    fitz = None


class PDF2ImageApp:
    """PDF转图片主窗口"""

    def __init__(self, root):
        self.root = root
        self.root.title("PDF页面转图片批量工具")
        self.root.geometry("680x520")
        self.root.configure(bg="#f0f0f0")
        self.pdf_files = []
        self.output_dir = ""
        self.dpi_var = tk.StringVar(value="150")
        self.fmt_var = tk.StringVar(value="PNG")
        self.running = False

        self._build_ui()

    def _build_ui(self):
        """构建界面"""
        # 标题
        title = tk.Label(self.root, text="📄 PDF页面转图片批量工具",
                         font=(CHINESE_FONT, 18, "bold"), bg="#f0f0f0", fg="#2c3e50")
        title.pack(pady=(15, 5))

        subtitle = tk.Label(self.root, text="将PDF每一页导出为高清图片，支持批量处理",
                            font=(CHINESE_FONT, 10), bg="#f0f0f0", fg="#7f8c8d")
        subtitle.pack(pady=(0, 10))

        # 文件选择区
        frame_file = tk.LabelFrame(self.root, text=" 文件选择 ",
                                    font=(CHINESE_FONT, 11, "bold"), bg="#f0f0f0", padx=10, pady=8)
        frame_file.pack(fill="x", padx=20, pady=5)

        btn_row = tk.Frame(frame_file, bg="#f0f0f0")
        btn_row.pack(fill="x")

        tk.Button(btn_row, text="添加PDF文件", font=(CHINESE_FONT, 10),
                  bg="#3498db", fg="white", relief="flat", padx=12,
                  command=self.add_files).pack(side="left", padx=5)
        tk.Button(btn_row, text="清空列表", font=(CHINESE_FONT, 10),
                  bg="#e74c3c", fg="white", relief="flat", padx=12,
                  command=self.clear_files).pack(side="left", padx=5)

        self.file_label = tk.Label(frame_file, text="未选择文件",
                                    font=(CHINESE_FONT, 9), bg="#f0f0f0", fg="#555",
                                    anchor="w", wraplength=600, justify="left")
        self.file_label.pack(fill="x", pady=(8, 0))

        # 输出目录
        frame_out = tk.LabelFrame(self.root, text=" 输出设置 ",
                                   font=(CHINESE_FONT, 11, "bold"), bg="#f0f0f0", padx=10, pady=8)
        frame_out.pack(fill="x", padx=20, pady=5)

        out_row = tk.Frame(frame_out, bg="#f0f0f0")
        out_row.pack(fill="x")
        tk.Button(out_row, text="选择输出目录", font=(CHINESE_FONT, 10),
                  bg="#27ae60", fg="white", relief="flat", padx=12,
                  command=self.choose_output).pack(side="left", padx=5)

💡 适用场景

办公自动化、数据分析、快速原型开发