Split PDF by Bookmarks into Chapters
A whole ebook, a long report, a contract bundle — if the file has bookmarks (an outline), the preset here splits it by top-level bookmarks: upload and each chapter becomes its own PDF, named after its bookmark title and packed into a zip. Files without bookmarks get an honest message (no quota used), and you can switch to page-range, every-N-pages, or file-size splitting. Everything runs locally in your browser.
Drop your file here
or choose from your device — no sign-up needed
Files are processed locally in your browser — never uploaded to any server
Full-release pricing preview: $6.9/mo or $49/yr · 30-day email notice before billing starts · nothing is charged during the beta
How it works (3 steps)
Upload a bookmarked PDF
The split mode is preset to "By bookmarks (outline)"; the top-level bookmarks are read automatically.
Split into chapters
Pages between one top-level bookmark and the next become one standalone PDF, named after the bookmark title.
Download the zip
All chapters are packed into a single zip; each part can also be saved individually.
Popular searches
- split PDF by chapters
- split PDF by outline
- extract chapters from PDF
FAQ
The file needs built-in bookmarks (the outline tree you see in a reader’s sidebar). PDFs exported from Word/LaTeX usually have them; scans and photo-based PDFs usually don’t — in that case you get a clear message and no quota is used.
Try it ↑Yes. Each top-level bookmark up to the next one counts as one chapter; nested bookmarks are not split further, so you don’t end up with dozens of tiny files.
Try it ↑Switch to "By page ranges", "Every N pages", or "By file size" — all four modes share the same split tool.
Try it ↑No — reading the outline and splitting run entirely in your browser.
Try it ↑No. Any change to a signed PDF (merging, compressing, watermarking…) invalidates the existing digital signature — that is the tamper-proof design of PDF signatures, not a limit of this site. Process first, then sign.
Try it ↑Yes — and you can verify it: the tool runs on open-source in-browser engines (pdf-lib, pdf.js, Tesseract OCR…) on your own device. Open DevTools → Network while processing and you will see no file upload requests.
Try it ↑Related tools
Split PDF
Four split modes: extract page ranges (like 1-3,5,7-9), split every N pages, split by bookmarks (outline chapters), or split by target file size
Merge PDF
Combine several PDFs into one file, in exactly the order you want — drag to reorder before merging
Organize PDF Pages
Straighten crooked scans, drop unwanted pages and put the rest in the right order — all in one pass, with a visual per-page thumbnail editor