Python高效提取PDF图片全攻略

使用Python和PyMuPDF提取PDF图片

安装必要的库：

pip install pymupdf

Python脚本示例：

import fitz  # PyMuPDF

def extract_images_from_pdf(pdf_path, output_folder):
    pdf_document = fitz.open(pdf_path)
    for page_num in range(len(pdf_document)):
        page = pdf_document.load_page(page_num)
        image_list = page.get_images()
        for img_index, img in enumerate(image_list):
            xref = img[0]
            base_image = pdf_document.extract_image(xref)
            image_bytes = base_image["image"]
            with open(f"{output_folder}/page{page_num}_img{img_index}.{base_image['ext']}", "wb") as img_file:
                img_file.write(image_bytes)

# 批量处理多个PDF
pdf_files = ["file1.pdf", "file2.pdf"]
for pdf in pdf_files:
    extract_images_from_pdf(pdf, "output_images")

使用Adobe Acrobat Pro DC提取图片

打开PDF文件后选择"工具" > "导出PDF" > "图像" > "JPEG/PNG/TIFF"。在批量处理时，可使用"动作向导"创建自定义动作，设置"导出所有图像"为默认操作，然后应用于多个文件。

使用在线工具批量处理

Smallpdf、iLovePDF等在线服务提供批量提取功能。将多个PDF上传至平台，选择"提取图片"功能，等待处理完成后下载压缩包。注意敏感文件不建议使用此方法。

使用PDFelement进行批量提取

安装PDFelement后，通过"批量处理"功能添加多个PDF文件。选择"提取图像"选项，设置输出格式和保存路径。软件会自动识别所有嵌入图像并保存为指定格式。

命令行工具pdfimages

Linux/macOS用户可使用预装的pdfimages工具：

pdfimages -all input.pdf output_prefix

批量处理脚本：

for file in *.pdf; do
    pdfimages -all "$file" "${file%.pdf}_images"
done

注意事项

检查PDF中的图像是否受版权保护，确保拥有合法提取权限。某些PDF使用矢量图形而非位图，需要转换为位图格式后再提取。高分辨率图像可能占用大量存储空间，建议处理前确认输出目录有足够空间。

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