将 pdf 转为高清 jpg

• 安装必要 python 包

pip install pdf2image pillow

• 运行

from pdf2image import convert_from_path
from PIL import Image# 逐页保存
images = convert_from_path("pic.pdf", dpi=300)
for i, img in enumerate(images, 1):img.save(f"pic_{i}_300dpi.jpg", dpi=(300, 300), quality=95)# 合成一张长图
total_height = sum(im.height for im in images)
max_width    = max(im.width  for im in images)long_img = Image.new("RGB", (max_width, total_height))
y_offset = 0
for im in images:long_img.paste(im, (0, y_offset))y_offset += im.heightlong_img.save("pic_long_300dpi.jpg", dpi=(300, 300), quality=95)