按书签拆分
在文档自己的章节边界处切分。
这款工具完全在你的浏览器中运行。文件从不上传，你可以在浏览器的网络标签中亲自验证这一点。 亲自验证：打开浏览器的网络标签观察。你会看到一个查询你是否还有剩余任务的小请求，只包含工具名称和一段哈希，绝不会包含文件。
这款工具的作用
This uses the document's own outline to decide where to cut. For anything with a table of contents that is far more useful than splitting every N pages, because the document already knows where its sections begin.
Use it on reports, manuals, statutes, textbooks and scanned books with an outline - anywhere someone needs the chapters as separate files, whether to distribute them individually, to file them separately, or to work on one at a time.
工作原理
- Drop the PDF onto this page. The tool reads its outline.
- Choose which outline level to cut at. Level 1 gives you top-level chapters; level 2 also splits their subsections.
- Decide whether output files should be named after their bookmarks.
- Choose whether to keep the pages before the first bookmark as a separate front-matter file.
- Press Split by bookmark and download the files individually or as a ZIP.
A section runs from its bookmark to the next bookmark at the same or a shallower level, not to the next bookmark of any depth. That distinction is what makes level 1 give you whole chapters including their subsections, rather than cutting every time a sub-heading appears.
Pages before the first bookmark belong to no section. Title pages, copyright notices and tables of contents usually live there, and dropping them silently would be a strange thing to do, so by default they become their own front-matter file. You can discard them instead.
Naming files after their bookmarks makes the output immediately usable, and the names are cleaned of characters that Windows and macOS reject in file names. Each is prefixed with a zero-padded number so the chapters stay in order in the file listing.
If the document has no outline at all, the tool says so and points you at Split PDF instead, rather than producing a single file and letting you wonder what happened.
常见问题
- 我的 PDF 没有书签，怎么办？
- 这款工具帮不上忙，它会明确告诉你，而不是悄悄失败。请改用拆分 PDF 按页面范围切分，或先用编辑书签添加书签再回来。
- 层级设置有什么作用？
- 它决定切到多深。层级 1 只在顶层书签处拆分，所以每一章连同其子节保持完整。层级 2 也在第二层书签处拆分，让每个子节成为一个文件。越深，得到的文件越多。
- 文件是怎样命名的？
- 默认每个文件都带编号并以其书签命名，例如 01-Introduction.pdf、02-Method.pdf 等。文件系统拒绝的字符会被移除。关闭命名选项则改用原文件名加编号。
- 标题页会怎样？
- 第一个书签之前的所有内容默认成为单独的前置内容文件，因此不会丢失。如果你不想要它，把前置内容选项切换为丢弃。