Chapter-Accurate Splitting
Each output file contains exactly one chapter - nothing more, nothing less.
Split Book PDF by Bookmarks - Extract Every Chapter
Turn any bookmarked e-book or scanned textbook into individual chapter files with one click.
Why Extract Chapters from a Book PDF?
Books distributed as a single PDF are hard to navigate, share selectively, or load on constrained devices.
Splitting a book PDF by its chapter bookmarks creates individual, manageable files - making it trivial to share Chapter 3 with a colleague, load only the relevant section on an e-reader, or annotate a single chapter without affecting the rest.
Most professionally produced e-books and many scanned textbooks already contain bookmark-based chapters, meaning zero manual setup is required before splitting.
How to Split a Book PDF into Chapters by Bookmarks
Upload once, get every chapter as a separate file.
1. Upload the Book PDF
Drop your e-book or scanned book PDF onto the iMZi PDF tool.
2. Confirm Chapter Bookmarks
The tool lists all detected bookmarks - typically one per chapter for books.
3. Download Chapter Files
Click Split PDF to receive a ZIP with one PDF per chapter, named by chapter title.
The Easiest Way to Extract Chapters from a PDF Book
Respect the book's own structure - no guessing where chapters start.
Titles Preserved
Output files are named after chapter titles for instant recognition.
Nested Sub-Chapter Support
Split at chapter level or go deeper to sub-chapter bookmarks.
E-Reader Friendly Output
Smaller chapter files load faster and display better on Kindle and similar devices.
Secure Processing
Your book content is never stored or shared by iMZi PDF.
No Cost
Free to extract every chapter without any subscription.
From One Heavy PDF to Dozens of Light Chapter Files
A 900-page programming textbook split into 30 chapters produces files that are easier to open, annotate, and search. Students and professionals benefit from chapter-level granularity rather than hunting through a monolithic document.
Book PDF Types That Split Well by Bookmarks
These book formats almost always include bookmark-based chapters.
Programming and technical textbooks
Downloaded academic e-books
Publisher-supplied review copies
Training and certification guides
Scanned books with added OCR bookmarks
Cookbooks and how-to guides
Frequently Asked Questions
Find answers to common questions about this tool.
Extract Every Chapter from Your Book PDF
Split a book PDF by its chapter bookmarks - free, fast, and perfectly accurate.