Split PDF by Chapters

From the document’s own bookmarks — the outline shown in your reader’s sidebar. Each top-level bookmark marks a chapter start, so the split follows the structure the author already defined rather than guessing from page numbers or headings.

Then there is nothing to split on, which is the common case with scans and simple exports. Add an outline first with our Edit TOC tool, then split — or if you already know the page numbers, the standard PDF Splitter takes them directly and skips the intermediate step.

After the bookmark titles, so you get recognisable names like "03 - Methodology.pdf" rather than numbered fragments. That is the practical advantage over splitting by page range: the resulting files are immediately identifiable without opening each one.

Yes, Split PDF by Chapters is completely free. No signup, no account, and no watermark on outputs. A Pro tier is available for 100 AI ops/day and larger file sizes.

Split PDF by Chapters uploads your file over an encrypted connection to our own processing server, converts it, and returns the result. The file is deleted immediately after processing and is never used for anything else. It is not sent to any third party, and we keep no copies.