Split PDF by Bookmarks
Split a bookmarked PDF into one file per chapter/section for sharing or archiving.
Split a PDF into separate files by bookmarks/outline chapters — free in your browser, files never leave your device.
Calculator Inputs
About Split by Bookmarks
Split a bookmarked PDF into one file per chapter/section for sharing or archiving.
Upload a PDF with bookmarks/outline. Each bookmark becomes one output file spanning its pages until the next bookmark. Pages are validated against the real page count; files never leave your browser.
Where it is used
Ebooks by chapter, reports by section, scanned books with auto-generated bookmarks.
How to use the Split by Bookmarks
- Select PDF — select a file (application/pdf,.pdf) — PDF up to 50 MB with bookmarks/outline. Files never leave your browser..
- Split Method — enter the value.
- Calculate — press the Calculate button to see the result instantly above.
Formula
Read PDF outline → map each bookmark dest to a page index → slice consecutive ranges → save each as a PDF.
Examples
Example
method:chapters
Result: Split files per bookmark (after selecting a PDF with outline)
Frequently Asked Questions
- PDF has no bookmarks?
- The tool will report no outline found. Add bookmarks first or use the generic Split tool.