从 PDF 中提取图片
将每一张内嵌图片提取为单独的文件。
使用方法
上传您的 PDF 并下载结果——每一张内嵌的 JPEG 图片都会被单独提取为一个文件，如果不止一张，则会打包为 ZIP。
这个工具可以提取哪些图片格式？
它能可靠地提取 JPEG 图片，这是扫描件和图片较多的 PDF 中最常见的内嵌格式。以其他内部格式存储的图片可能无法提取——这是尽力而为，不能保证。
如果 PDF 没有可提取的图片怎么办？
您会看到一条提示，说明未找到图片——纯文本 PDF，或图片格式此工具无法解码的 PDF，都可能出现这种情况。
Does this extract vector graphics or just photos?
Just embedded raster (JPEG) images — vector graphics like drawn shapes or icons aren't image files inside the PDF, so they're not extracted.
What resolution will the extracted images be?
Whatever resolution they were embedded at originally — this tool pulls out the actual image data, it doesn't downscale or recompress it.
Can I extract images from just a few specific pages?
The tool scans the whole PDF, but you choose which of the found images to actually download.
Is my PDF uploaded to extract the images?
No — extraction happens entirely in your browser. Your PDF and the images pulled out of it never leave your device.
Does this extract PNG images from a PDF?
No — only JPEG images. PNGs and other non-JPEG formats are compressed differently inside a PDF, and this tool doesn't decode those yet — if a PDF's photos are stored as PNG rather than JPEG, they won't show up in your results.
Is there a file size or page limit?
No hard limit from the tool — it runs on your own device instead of a server with an upload cap. A PDF with hundreds of pages or a lot of large photos will just take longer and use more of your browser's memory.