按书签拆分 PDF
将每个带书签的章节拆分为独立文件。
使用方法
上传您的 PDF 并下载结果——文件会按每个顶层书签拆分成一个文件，并以该书签命名。
这会使用哪些书签？
PDF 中已有的顶层大纲（目录）条目——每个条目对应的页面都会成为新文件的起始页。
如果我的 PDF 使用的是指向命名目标的链接，而不是直接页面书签，该怎么办？
这类书签会被尽力跳过——此工具支持常见的直接页面引用型书签，但不支持所有可能的 PDF 目标类型。
What happens to pages before the first bookmark?
They're included in the first split file, since there's no earlier bookmark to start a new section.
Are the split files named after the bookmarks?
Yes — each output file is named using its corresponding bookmark's title, made safe for use as a filename.
What if my PDF has no bookmarks at all?
You'll see a message that none were found — use Split PDF instead if you want to split by page count or file size rather than by bookmarks.
Does it handle nested bookmarks, like sub-chapters under a chapter?
No — only the top-level entries in the outline are used. If a chapter has sub-bookmarks nested underneath it, those sub-sections aren't split out on their own; they just stay bundled inside that chapter's file along with everything else in its page range.
My PDF doesn't have bookmarks — can I add some first?
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