Processed on our servers. Every file auto-deletes within 1 hour.
Split by bookmarks
Split a PDF into separate files at its bookmarks — one file per chapter or section.
or drop PDF here
Secure. Private. In your control.
How to split a PDF by bookmarks
1. Upload a PDF that has bookmarks (an outline / table of contents).
2. Choose the outline level to split at — top level for chapters, a deeper level for sub-sections.
3. Split, and download one PDF per bookmark, bundled as a ZIP.
Frequently asked questions
What does splitting by bookmarks do?
It cuts your PDF into separate files at each bookmark in the document's outline — so a book with chapter bookmarks becomes one PDF per chapter. You pick the outline level to split at.
My PDF has no bookmarks — can I still split it?
This tool needs an outline to split by. If your PDF has no bookmarks, use Split PDF to split by page ranges, or Split by text to cut at a repeating phrase.
Is it free and private?
Yes — free, no signup, no watermark. Your file is processed on our servers and permanently deleted within one hour.