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ORGANIZE
Cut a PDF into separate files at each bookmark, so every chapter or section becomes its own PDF.
QUICK ANSWER
To split a PDF by bookmarks, add a PDF that has bookmarks. StackPDF reads the outline and makes one file per bookmark, named after it. Check the list, then download the files as a .zip. It runs in your browser, so your file isn’t uploaded.
Updated 31 October 2026 · Written by the StackPDF teamUpdated 31 October 2026 · StackPDF team
Each bookmark becomes its own file. It stays in this browser.Each bookmark becomes its own file. It stays in this browser.
PDF files · Runs in your browser
QUICK ANSWER
To split a PDF by bookmarks, add a PDF that has bookmarks. StackPDF reads the outline and makes one file per bookmark, named after it. Check the list, then download the files as a .zip. It runs in your browser, so your file isn’t uploaded.
Updated 31 October 2026 · Written by the StackPDF teamUpdated 31 October 2026 · StackPDF team
HOW TO
Choose a PDF with bookmarks, such as a report or an ebook with chapters.
Each bookmark is listed with the page it starts on. Each one becomes a file.
Get every section as its own PDF, together in a .zip.
GOOD TO KNOW
Each file starts at a bookmark’s page and ends just before the next bookmark.
| BOOKMARK | BECOMES | PAGES |
|---|---|---|
| Introduction · page 1 | Annual report 2026 (introduction).pdf | 1 to 3 |
| Results · page 4 | Annual report 2026 (results).pdf | 4 to 11 |
| Outlook · page 12 | Annual report 2026 (outlook).pdf | 12 to 20 |
Bookmarks that don’t point at a page are skipped. If there are none, use Split PDF.
PRIVACY
Yes. Split PDF by bookmarks runs in your browser, so the file never leaves your device.
StackPDF opens the PDF in your browser tab and does the work there.
Close the tab and it’s gone. Free results download to your device. Premium can also keep them in My files.
pdf-lib, PDF.js and qpdf do the work, inside your browser.
FAQ
If the PDF has a bookmark for each chapter, add it here. Each bookmark becomes a separate PDF, and you download them together.
Yes. The free plan includes 1 PDF export a day, with no account. Premium removes the daily limit for $5.99 a month or $39.99 a year.
No. The PDF is split in your browser, so it stays on your device.
Use Split PDF instead, and cut the file at the pages you choose.
Yes. Every bookmark that points at a page starts a new file, including sub-bookmarks. Bookmarks on the same page make one file.
Each file is named after its bookmark, such as Annual report 2026 (results).pdf. Pages before the first bookmark go into a file ending in (front).