按书签拆分

The tool reads your PDF's existing bookmark or chapter structure and splits at those points, turning each bookmark section into its own separate file. You pick which bookmark level to split at, so the divisions match your document's outline.

Yes. The tool detects all bookmarks and lets you select the level, whether that's top-level chapters, subsections, or deeper nesting. This flexibility lets you break a document into a few large chapters or many smaller parts.

This tool relies on an existing bookmark structure to determine split points, so it works best with PDFs that already have chapters or an outline, like manuals, textbooks, or legal documents. Without bookmarks, there are no markers to split on.

Yes. Each split file preserves the bookmarks within it, along with all formatting, images, and text quality from the original. The chapters remain navigable, so your organized structure carries over into the smaller documents.

Absolutely. All processing runs locally in your browser, so your PDF is never sent to a server. Your structured documents stay on your device, and you can download the split files individually or as one ZIP archive.