DollarWise

Free Split PDF by Bookmarks — Divide PDF at Chapters Online

October 23, 2026 · 2 min read · By the DollarWise team

Long PDFs — textbooks, reports, manuals — usually have a bookmark outline where each chapter starts. Instead of splitting by hand, upload the PDF here and get one file per bookmark entry, automatically cut at each chapter’s first page. The outline is read with pdf-lib entirely in your browser, so your document never leaves your device.

Split PDF by Bookmarks

Cut a PDF at its bookmark entries — one chapter file each, in your browser.

100% Free Forever No Sign-up No Credit Card Private — files never leave your browser Unlimited Use

1 Add your PDF

Drag & drop your PDF here or click to browse — must have bookmarks/outline

    2 Split settings

    Files are named like chapter-01-Introduction.pdf.
    Number files (01-, 02-, …)
    Keeps chapters in reading order in your file manager.
    Skip entries without a page target
    Some outline entries are folders with no destination page.

    3 Split & download

    Working…

    ✅ Done — chapters extracted

    🎉 Free forever. No sign-up. No credit card. No limits.

    This tool runs entirely in your browser — split as many PDFs as you like.

    How it works

    Upload a PDF that has bookmarks (the chapter sidebar in your PDF reader). The tool reads the outline with pdf-lib, maps each bookmark to its start page, and cuts the document into one file per chapter — the last chapter runs to the final page. Each file downloads with a numbered, chapter-titled filename.

    Rule of thumb: if your PDF has no bookmark outline, use a page-range splitter instead (or add bookmarks first) — this tool can only cut where bookmarks exist.

    Everyday uses

    • Students — extract just the chapters you need from a giant textbook instead of carrying the whole file.
    • Course creators — split a long ebook into one downloadable module per chapter.
    • Researchers — pull out individual report sections to share with collaborators.
    • Manuals — send a colleague only the troubleshooting chapter, not the 400-page manual.
    • Archiving — break a scanned multi-document PDF into its original documents where bookmarks mark boundaries.

    Privacy note: the outline is parsed with pdf-lib loaded in your own browser — your documents never leave your device.