Python实现PDF文档压缩的完整指南

pip install spire.pdf

from spire.pdf import *

# 加载 PDF 文件
compressor = PdfCompressor("C:/Users/Administrator/Documents/示例.pdf")

# 获取压缩设置
options = compressor.OptimizationOptions

# 启用图片缩放
options.SetResizeImages(True)

# 启用图片压缩
options.SetIsCompressImage(True)

# 设置图片压缩质量（低/中/高）
options.SetImageQuality(ImageQuality.Medium)

# 执行压缩并保存
compressor.CompressToFile("压缩.pdf")
print("PDF 压缩完成，文件已保存为 压缩.pdf")

from spire.pdf import *

# 加载 PDF 文件
compressor = PdfCompressor("C:/Users/Administrator/Documents/示例.pdf")

# 获取压缩设置
options = compressor.OptimizationOptions

# 启用字体压缩
options.SetIsCompressFonts(True)

# 可选：取消嵌入字体
# options.SetIsUnembedFonts(True)

# 执行压缩并保存
compressor.CompressToFile("压缩_fonts.pdf")
print("PDF 字体压缩完成")

import os
from spire.pdf import *

input_folder = "C:/Users/Administrator/Documents/PDFs"
output_folder = "C:/Users/Administrator/Documents/CompressedPDFs"

os.makedirs(output_folder, exist_ok=True)

for filename in os.listdir(input_folder):
    if filename.endswith(".pdf"):
        input_path = os.path.join(input_folder, filename)
        output_path = os.path.join(output_folder, filename)

        compressor = PdfCompressor(input_path)
        options = compressor.OptimizationOptions
        options.SetResizeImages(True)
        options.SetIsCompressImage(True)
        options.SetImageQuality(ImageQuality.Medium)
        options.SetIsCompressFonts(True)

        compressor.CompressToFile(output_path)
        print(f"{filename} 已压缩完成")