Turn a book or manual PDF into one file per chapter, named after each chapter
Processed in your browser. Nothing is uploaded. Checked against sources on 17 Oct 2026.Textbooks, manuals and reports usually carry a bookmark for each chapter. This page reads those bookmarks and cuts the PDF where each chapter starts, so a 600-page book becomes files such as 03 Thermodynamics.pdf, each with the right pages. Choose top-level chapters or go one level deeper into sections. Pages are copied, not re-printed, so text stays sharp and searchable. Nothing is uploaded.
Drop your files or click to choose them.
Adjust the options and check the preview.
Download the result. Nothing was uploaded.
Most long PDFs, such as textbooks, manuals, annual reports and theses, carry an outline: the bookmarks in the sidebar that jump to each chapter. That outline already says where every chapter begins, so splitting by it needs no page numbers typed in.
| Bookmarks | Result |
|---|---|
| Preface p.3, Chapter 1 p.4, Chapter 2 p.7, in a 9-page file | Preface 3, Chapter 1 4-6, Chapter 2 7-9 |
| Pages before the first bookmark (cover, contents) | An optional Front matter part, on by default |
| Two bookmarks on the same page (Chapter 1 and 1.1) | One part, titled with both |
| A bookmark that is a web link or has no page | Ignored |
| Bookmarks listed out of page order | Sorted by page |
Names that sort. Each file is numbered and named after its bookmark, such as 03 Chapter 2.pdf, with characters that Windows or phones refuse replaced, so the folder lists the chapters in book order.
The rest of the article, and all 6 questions about Split PDF by Bookmarks, are on the Split PDF by Bookmarks page.
Select the PDF on Split PDF by Bookmarks. Its bookmarks are read and the chapters appear with their page ranges. Press Split into chapters, and each chapter becomes its own PDF named after it. Download all saves them in one zip, numbered in book order.
Yes. Choose level 2 to split at every chapter and every section inside it, or a deeper level if the outline has one. The parts and their page ranges update at once, so you can see how many files you will get before splitting.
No. The pages are copied from the original PDF, not printed again, so text stays sharp, selectable and searchable, and pictures keep their resolution. Each chapter file holds only its own pages, so it is smaller than the whole book.
No. The PDF is read and split by your own browser, and the chapter files are saved from your device. Books, reports and notes never reach a server, and nothing is kept after you close the tab.
Rates and rules change; check the source before you rely on a figure.
Still stuck? Ask about Split PDF by Bookmarks and anybody who knows can answer. No account needed.
Same job, other tools: Extract PDF Pages – Pick the pages you need and save them as a new PDF · HEIC to PDF – Convert iPhone HEIC photos straight into a PDF · JPG to PDF – Convert JPG photos into a single PDF, in the order you choose · Compress PDF to 500 KB – Fit a multi-page scan under 500 KB with its text still readable · Compress PDF to 50 KB – Get a one-page scan under 50 KB for strict document uploads · Resume Word to PDF – Send your resume as a PDF so the formatting holds.