Split a PDF into chapters using its bookmarks
Cut a long PDF into one file per chapter using the bookmarks already in it. In your browser, no upload, no sign-up.
Manuals, books and reports often carry bookmarks for each chapter. This tool reads them and saves one PDF per top-level bookmark, named after the chapter, all in a ZIP. It runs on your device, so the document is never uploaded.
What you get
Uses what is in the file
Chapters come from the PDF's own bookmarks, not from guesses.
Named by chapter
Each file gets its number and chapter title.
Private by design
No upload and no account.
How it works
- Step 1
Add a PDF that has bookmarks.
- Step 2
Click Split by bookmarks.
- Step 3
Download the chapters as a ZIP.
Who uses it
Students
Pull single chapters out of a textbook PDF.
Support teams
Split a long manual into sections for different audiences.
Editors
Separate a report's parts for review.
Questions
What if my PDF has no bookmarks?
The tool says so. Use the split tool with page ranges instead.
Does it split on sub-sections too?
No. It uses the top-level bookmarks only.
Are my files uploaded?
No. It runs in your browser.
How do I see the bookmarks first?
Most PDF viewers show them in a side panel.