Python PDF批量转图片工具
1.简介：
这是一个简单易用的PDF转图片工具，主要功能：
- 可以批量处理多个PDF文件
- 可以选择需要转换的具体页面
- 支持两种设置方式：
- 统一设置：所有PDF使用相同的页码
- 单独设置：每个PDF单独设置页码
使用方法：
- 点击"选择文件夹"，选择PDF所在文件夹
- 选择设置方式并输入要转换的页码
例如：1,2,3 或 1-5 或 1,3-5 - 点击"开始转换"即可
转换后的图片会自动保存在原PDF所在目录下的"文件名_images"文件夹中
2.运行效果：
3.相关源码：
python
import tkinter as tk
from tkinter import ttk, filedialog, messagebox
import os
import fitz
import threading
from queue import Queue
import gc
from typing import Dict, List
class PDFConverter:
def __init__(self):
self.root = tk.Tk()
self.root.title("PDF批量转图片工具")
self.root.geometry("900x700")
# 存储PDF文件和对应的页码设置
self.pdf_settings: Dict[str, List[int]] = {}
# 创建工作队列
self.work_queue = Queue()
self.setup_ui()
def setup_ui(self):
# 文件夹选择框
folder_frame = ttk.Frame(self.root)
folder_frame.pack(fill=tk.X, padx=5, pady=5)
self.folder_path = tk.StringVar()
ttk.Entry(folder_frame, textvariable=self.folder_path).pack(side=tk.LEFT, fill=tk.X, expand=True)
ttk.Button(folder_frame, text="选择文件夹", command=self.select_folder).pack(side=tk.RIGHT)
# 添加帮助按钮
help_frame = ttk.Frame(self.root)
help_frame.pack(fill=tk.X, padx=5)
ttk.Button(help_frame, text="使用帮助", command=self.show_help).pack(side=tk.RIGHT)
# 设置模式选择
self.mode_frame = ttk.LabelFrame(self.root, text="设置模式")
self.mode_frame.pack(fill=tk.X, padx=5, pady=5)
self.setting_mode = tk.StringVar(value="batch")
ttk.Radiobutton(self.mode_frame, text="统一设置", variable=self.setting_mode,
value="batch", command=self.toggle_setting_mode).pack(side=tk.LEFT, padx=10)
ttk.Radiobutton(self.mode_frame, text="单独设置", variable=self.setting_mode,
value="individual", command=self.toggle_setting_mode).pack(side=tk.LEFT, padx=10)
# 统一设置页码框架
self.batch_setting_frame = ttk.LabelFrame(self.root, text="统一页码设置")
self.batch_setting_frame.pack(fill=tk.X, padx=5, pady=5)
ttk.Label(self.batch_setting_frame, text="页码格式(例如: 1,2,3-5):").pack(side=tk.LEFT)
self.batch_pages = ttk.Entry(self.batch_setting_frame)
self.batch_pages.pack(side=tk.LEFT, fill=tk.X, expand=True, padx=5)
ttk.Button(self.batch_setting_frame, text="应用", command=self.apply_batch_settings).pack(side=tk.RIGHT)
# 控制按钮面板（移到页码设置下面）
control_frame = ttk.Frame(self.root)
control_frame.pack(fill=tk.X, padx=5, pady=5)
# 转换按钮和进度条
ttk.Button(control_frame, text="开始转换", command=self.start_conversion).pack(side=tk.LEFT, padx=5)
self.progress = ttk.Progressbar(control_frame, mode='determinate')
self.progress.pack(side=tk.LEFT, fill=tk.X, expand=True, padx=5)
# 添加清理内存按钮
ttk.Button(control_frame, text="清理内存", command=self.clean_memory).pack(side=tk.RIGHT, padx=5)
# 创建左右分栏
main_pane = ttk.PanedWindow(self.root, orient=tk.HORIZONTAL)
main_pane.pack(fill=tk.BOTH, expand=True, padx=5, pady=5)
# 左侧面板（文件列表）
left_frame = ttk.Frame(main_pane)
main_pane.add(left_frame, weight=2)
# PDF文件列表框架
list_frame = ttk.LabelFrame(left_frame, text="PDF文件列表")
list_frame.pack(fill=tk.BOTH, expand=True)
# 创建树形视图
columns = ("文件名", "页码设置")
self.tree = ttk.Treeview(list_frame, columns=columns, show="headings")
self.tree.heading("文件名", text="文件名")
self.tree.heading("页码设置", text="页码设置")
self.tree.column("文件名", width=400)
self.tree.column("页码设置", width=200)
# 创建页码输入框
self.page_entries = {} # 存储每个项目的输入框
# 添加滚动条
scrollbar = ttk.Scrollbar(list_frame, orient=tk.VERTICAL, command=self.tree.yview)
scrollbar.pack(side=tk.RIGHT, fill=tk.Y)
self.tree.configure(yscrollcommand=scrollbar.set)
self.tree.pack(side=tk.LEFT, fill=tk.BOTH, expand=True)
# 右侧处理日志面板
right_frame = ttk.LabelFrame(main_pane, text="处理日志")
main_pane.add(right_frame, weight=1)
# 创建日志文本框
self.log_text = tk.Text(right_frame, wrap=tk.WORD, width=40)
log_scrollbar = ttk.Scrollbar(right_frame, command=self.log_text.yview)
self.log_text.configure(yscrollcommand=log_scrollbar.set)
self.log_text.pack(side=tk.LEFT, fill=tk.BOTH, expand=True)
log_scrollbar.pack(side=tk.RIGHT, fill=tk.Y)
# 初始化显示状态
self.toggle_setting_mode()
def toggle_setting_mode(self):
"""切换设置模式"""
mode = self.setting_mode.get()
if mode == "batch":
self.batch_setting_frame.pack(after=self.mode_frame, fill=tk.X, padx=5, pady=5)
# 隐藏所有单独设置的输入框
for entry in self.page_entries.values():
entry.place_forget()
else:
self.batch_setting_frame.pack_forget()
# 显示所有单独设置的输入框
self.update_page_entries()
def load_pdf_files(self):
"""加载PDF文件列表"""
# 清空现有列表和输入框
for item in self.tree.get_children():
self.tree.delete(item)
self.pdf_settings.clear()
self.page_entries.clear()
# 加载新的PDF文件
folder = self.folder_path.get()
for file in os.listdir(folder):
if file.lower().endswith('.pdf'):
full_path = os.path.join(folder, file)
item = self.tree.insert("", tk.END, values=(file, ""))
self.pdf_settings[full_path] = []
# 为每个项目创建输入框
self.create_entry_for_item(item)
# 如果是单独设置模式，显示输入框
if self.setting_mode.get() == "individual":
self.update_page_entries()
def create_entry_for_item(self, item):
"""为树形视图项目创建输入框"""
entry = ttk.Entry(self.tree)
entry.bind('<Return>', lambda e, i=item: self.on_entry_change(e, i))
entry.bind('<FocusOut>', lambda e, i=item: self.on_entry_change(e, i))
self.page_entries[item] = entry
def update_page_entries(self):
"""更新所有输入框的位置"""
for item in self.tree.get_children():
entry = self.page_entries[item]
# 获取页码设置列的位置
bbox = self.tree.bbox(item, "页码设置")
if bbox:
x, y, w, h = bbox
entry.place(x=x, y=y, width=w, height=h)
entry.delete(0, tk.END)
entry.insert(0, self.tree.item(item)['values'][1])
def on_entry_change(self, event, item):
"""处理输入框内容变化"""
entry = event.widget
try:
page_string = entry.get()
file_name = self.tree.item(item)['values'][0]
full_path = os.path.join(self.folder_path.get(), file_name)
if page_string.strip():
pages = self.parse_page_numbers(page_string)
self.pdf_settings[full_path] = pages
self.tree.set(item, "页码设置", page_string)
else:
self.pdf_settings[full_path] = []
self.tree.set(item, "页码设置", "")
except ValueError:
messagebox.showerror("错误", "页码格式错误")
entry.focus_set()
def parse_page_numbers(self, page_string: str) -> List[int]:
pages = set()
if not page_string.strip():
return []
for part in page_string.split(','):
part = part.strip()
if '-' in part:
start, end = map(int, part.split('-'))
pages.update(range(start, end + 1))
else:
pages.add(int(part))
return sorted(list(pages))
def apply_batch_settings(self):
page_string = self.batch_pages.get()
try:
pages = self.parse_page_numbers(page_string)
for pdf_path in self.pdf_settings:
self.pdf_settings[pdf_path] = pages
# 更新显示
for item in self.tree.get_children():
self.tree.set(item, "页码设置", page_string)
except ValueError:
messagebox.showerror("错误", "页码格式错误")
def convert_pdf_to_images(self, pdf_path: str, pages: List[int]):
try:
doc = fitz.open(pdf_path)
base_name = os.path.splitext(os.path.basename(pdf_path))[0]
output_dir = os.path.join(os.path.dirname(pdf_path), f"{base_name}_images")
os.makedirs(output_dir, exist_ok=True)
self.log_message(f"开始处理文件: {base_name}")
total_pages = len(pages)
for idx, page_num in enumerate(pages, 1):
if page_num <= len(doc):
self.log_message(f"处理页面 {page_num} ({idx}/{total_pages})")
page = doc[page_num - 1]
pix = page.get_pixmap(matrix=fitz.Matrix(2, 2))
output_path = os.path.join(output_dir, f"{base_name}_page_{page_num}.png")
pix.save(output_path)
pix = None # 释放内存
page = None # 释放页面对象
gc.collect() # 及时清理内存
doc.close()
self.log_message(f"文件 {base_name} 处理完成")
except Exception as e:
error_msg = f"转换文件 {base_name} 时出错: {str(e)}"
self.log_message(error_msg)
messagebox.showerror("错误", error_msg)
def process_queue(self):
"""处理队列中的任务"""
while True:
try:
# 非阻塞方式获取任务
pdf_path = self.work_queue.get_nowait()
pages = self.pdf_settings[pdf_path]
self.convert_pdf_to_images(pdf_path, pages)
self.work_queue.task_done()
# 更新进度
with self.lock:
self.completed_files += 1
progress = (self.completed_files / self.total_files) * 100
self.progress['value'] = progress
self.root.update()
except queue.Empty:
break # 队列为空时退出
except Exception as e:
self.log_message(f"处理出错: {str(e)}")
break
def start_conversion(self):
if not self.pdf_settings:
messagebox.showwarning("警告", "没有选择PDF文件")
return
# 初始化计数器和锁
self.completed_files = 0
self.total_files = sum(1 for pdf_path in self.pdf_settings if self.pdf_settings[pdf_path])
self.lock = threading.Lock()
if self.total_files == 0:
messagebox.showwarning("警告", "没有设置页码的文件")
return
self.log_message("开始转换处理...")
# 将任务添加到队列
for pdf_path in self.pdf_settings:
if self.pdf_settings[pdf_path]:
self.work_queue.put(pdf_path)
# 创建并启动工作线程
num_threads = min(4, self.total_files)
self.log_message(f"启动 {num_threads} 个工作线程")
threads = []
for i in range(num_threads):
t = threading.Thread(target=self.process_queue, daemon=True)
t.start()
threads.append(t)
# 创建监控线程
monitor_thread = threading.Thread(target=self.monitor_conversion,
args=(threads,), daemon=True)
monitor_thread.start()
def monitor_conversion(self, threads):
"""监控转换进度"""
try:
# 等待所有任务完成
self.work_queue.join()
# 等待所有线程结束
for t in threads:
t.join()
# 在主线程中更新UI
self.root.after(0, self.conversion_completed)
except Exception as e:
self.log_message(f"监控线程出错: {str(e)}")
def conversion_completed(self):
"""转换完成后的处理"""
self.clean_memory()
self.log_message("所有文件处理完成！")
self.progress['value'] = 0
messagebox.showinfo("完成", "所有PDF文件转换完成！")
def run(self):
self.root.mainloop()
def select_folder(self):
"""选择文件夹并加载PDF文件"""
folder = filedialog.askdirectory()
if folder:
self.folder_path.set(folder)
self.load_pdf_files()
def log_message(self, message):
"""添加日志消息"""
self.log_text.insert(tk.END, f"{message}\n")
self.log_text.see(tk.END)
self.root.update()
def clean_memory(self):
"""手��清理内存"""
gc.collect()
self.log_message("已执行内存清理")
def show_help(self):
"""显示使用帮助对话框"""
help_text = """
PDF批量转图片工具
这是一个简单易用的PDF转图片工具，主要功能：
1. 可以批量处理多个PDF文件
2. 可以选择需要转换的具体页面
3. 支持两种设置方式：
- 统一设置：所有PDF使用相同的页码
- 单独设置：每个PDF单独设置页码
使用方法：
1. 点击"选择文件夹"，选择PDF所在文件夹
2. 选择设置方式并输入要转换的页码
例如：1,2,3 或 1-5 或 1,3-5
3. 点击"开始转换"即可
转换后的图片会自动保存在原PDF所在目录下的"文件名_images"文件夹中。
"""
# 创建帮助窗口
help_window = tk.Toplevel(self.root)
help_window.title("使用帮助")
help_window.geometry("600x500")
# 创建文本框和滚动条
text_frame = ttk.Frame(help_window)
text_frame.pack(fill=tk.BOTH, expand=True, padx=10, pady=10)
help_text_widget = tk.Text(text_frame, wrap=tk.WORD, width=60, height=25)
scrollbar = ttk.Scrollbar(text_frame, orient=tk.VERTICAL, command=help_text_widget.yview)
help_text_widget.configure(yscrollcommand=scrollbar.set)
help_text_widget.pack(side=tk.LEFT, fill=tk.BOTH, expand=True)
scrollbar.pack(side=tk.RIGHT, fill=tk.Y)
# 插入帮助文本
help_text_widget.insert(tk.END, help_text)
help_text_widget.configure(state='disabled') # 设置为只读
# 添加关闭按钮
ttk.Button(help_window, text="关闭", command=help_window.destroy).pack(pady=10)
# 设置窗口模态
help_window.transient(self.root)
help_window.grab_set()
# 将窗口居中显示
help_window.update_idletasks()
width = help_window.winfo_width()
height = help_window.winfo_height()
x = (help_window.winfo_screenwidth() // 2) - (width // 2)
y = (help_window.winfo_screenheight() // 2) - (height // 2)
help_window.geometry(f'{width}x{height}+{x}+{y}')
if __name__ == "__main__":
app = PDFConverter()
app.run()