PDF转图片批量导出工具：将PDF每页转为高清PNG图片、自定义分辨率与页码范围、进度实时显示

🖥️ 运行效果

🚀 实例简介

将PDF文件的每一页转换为高清PNG/JPEG/BMP图片，支持自定义分辨率、页码范围选择，批量导出一键完成。适用于需要将PDF文档转为图片格式分享、打印或归档的场景。

💻 核心代码

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""PDF转图片批量导出工具 - 将PDF每页转为高清PNG图片"""

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

CHINESE_FONT = "WenQuanYi Zen Hei" if platform.system() == "Linux" else "Microsoft YaHei"

class PDF2ImageApp:
    def __init__(self, root):
        self.root = root
        self.root.title("PDF转图片批量导出工具")
        self.root.geometry("700x520")
        self.root.configure(bg="#f0f4f8")
        self.pdf_path = ""
        self.output_dir = ""
        self._build_ui()

    def _build_ui(self):
        # 标题
        tk.Label(self.root, text="📄 PDF转图片批量导出工具",
                 font=(CHINESE_FONT, 18, "bold"), bg="#f0f4f8", fg="#1a365d").pack(pady=12)
        # 文件选择区
        frame1 = ttk.LabelFrame(self.root, text="选择PDF文件", padding=10)
        frame1.pack(fill="x", padx=20, pady=5)
        self.path_var = tk.StringVar(value="未选择文件")
        ttk.Entry(frame1, textvariable=self.path_var, width=55, state="readonly").pack(side="left", padx=5)
        ttk.Button(frame1, text="浏览...", command=self._browse_pdf).pack(side="left")
        # 设置区
        frame2 = ttk.LabelFrame(self.root, text="导出设置", padding=10)
        frame2.pack(fill="x", padx=20, pady=5)
        ttk.Label(frame2, text="DPI分辨率:", font=(CHINESE_FONT, 11)).grid(row=0, column=0, sticky="w", pady=3)
        self.dpi_var = tk.StringVar(value="200")
        ttk.Combobox(frame2, textvariable=self.dpi_var, values=["100","150","200","300","600"], width=10).grid(row=0, column=1, padx=10)
        tk.Label(frame2, text="(越高越清晰,文件越大)", font=(CHINESE_FONT, 9), fg="gray", bg="white").grid(row=0, column=2, sticky="w")
        ttk.Label(frame2, text="页码范围:", font=(CHINESE_FONT, 11)).grid(row=1, column=0, sticky="w", pady=3)
        self.pages_var = tk.StringVar(value="全部")
        ttk.Entry(frame2, textvariable=self.pages_var, width=15).grid(row=1, column=1, padx=10, sticky="w")
        tk.Label(frame2, text="(如: 1-3,5 或留空=全部)", font=(CHINESE_FONT, 9), fg="gray", bg="white").grid(row=1, column=2, sticky="w")
        ttk.Label(frame2, text="输出格式:", font=(CHINESE_FONT, 11)).grid(row=2, column=0, sticky="w", pady=3)
        self.fmt_var = tk.StringVar(value="PNG")
        ttk.Combobox(frame2, textvariable=self.fmt_var, values=["PNG","JPEG","BMP"], width=10, state="readonly").grid(row=2, column=1, padx=10, sticky="w")
        # 输出目录
        frame3 = ttk.LabelFrame(self.root, text="输出目录", padding=10)
        frame3.pack(fill="x", padx=20, pady=5)
        self.dir_var = tk.StringVar(value="")
        ttk.Entry(frame3, textvariable=self.dir_var, width=55, state="readonly").pack(side="left", padx=5)
        ttk.Button(frame3, text="选择目录", command=self._browse_dir).pack(side="left")
        # 进度
        self.progress = ttk.Progressbar(self.root, length=600, mode="determinate")
        self.progress.pack(pady=10, padx=20)
        self.status_var = tk.StringVar(value="就绪")
        tk.Label(self.root, textvariable=self.status_var, font=(CHINESE_FONT, 10),
                 bg="#f0f4f8", fg="#2d3748").pack()
        # 按钮
        btn_frame = tk.Frame(self.root, bg="#f0f4f8")
        btn_frame.pack(pady=10)
        self.convert_btn = tk.Button(btn_frame, text="🚀 开始转换", font=(CHINESE_FONT, 13, "bold"),
                                     bg="#3182ce", fg="white", padx=30, pady=8, command=self._start_convert)
        self.convert_btn.pack(side="left", padx=10)
        tk.Button(btn_frame, text="打开输出目录", font=(CHINESE_FONT, 10),
                  command=self._open_dir).pack(side="left", padx=10)

    def _browse_pdf(self):
        path = filedialog.askopenfilename(filetypes=[("PDF文件","*.pdf")])
        if path:
            self.pdf_path = path
            self.path_var.set(os.path.basename(path))
            if not self.output_dir:
                self.output_dir = os.path.dirname(path)
                self.dir_var.set(self.output_dir)

    def _browse_dir(self):
        d = filedialog.askdirectory()
        if d:
            self.output_dir = d
            self.dir_var.set(d)

💡 适用场景

办公自动化、数据分析、快速原型开发