Split by Bookmarks
Create one PDF for each top-level bookmark / outline entry in the document.
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Well-made PDFs carry their own table of contents: the bookmark panel down the left side of your reader. PDFora's split by bookmarks tool treats those entries as cutting lines. Every top-level bookmark starts a new file, and each output is named after its bookmark title, so "Chapter 3: Methodology" becomes a file actually called that. The whole set arrives as a single ZIP download.
Nothing you split is uploaded. The bookmark outline is read and the pages are separated locally in your browser, which keeps board packs, legal briefs, and unreleased manuscripts on your own machine from start to finish. The tool is free, works without an account, leaves no watermark, and can split as many documents as you throw at it.
The alternative is grim: open the bookmark panel, note each chapter's start page, and run a page-range split a dozen times, then rename every output by hand. Bookmark splitting collapses all of that into one click, with the naming done for you.
How to split a PDF by bookmarks online
- Open the Split by Bookmarks tool on getpdfora.com. Processing stays local to your browser.
- Add a PDF that contains a bookmark outline, such as a report, manual, or ebook.
- The tool reads the top-level bookmarks; each one marks where a new file will begin.
- Click Split. Pages from one bookmark up to the next are gathered into their own PDF.
- Each output file is automatically named after its bookmark title, so no manual renaming is needed.
- Download the ZIP archive and extract it to get every section as a separate, sensibly named file.
When to use this tool
- Splitting a 300-page annual report into its bookmarked sections so each department head receives only their chapter.
- Breaking a technical manual into per-module PDFs for a learning platform that wants one file per lesson.
- Separating a board pack into individual agenda items, each named after its bookmark, for distribution to committee members.
- Dividing a court filing into its bookmarked exhibits so each exhibit can be referenced and shared on its own.
- Turning a bookmarked cookbook manuscript into one file per chapter for editors reviewing different sections.
- Extracting the chapters of a company handbook so HR can update one section without touching the rest.
Tips for the best results
- Check the bookmark panel in your PDF reader before splitting; what you see at the top level is exactly where the cuts will fall.
- Only top-level bookmarks trigger splits. Nested sub-bookmarks stay inside their parent's file, which usually matches how chapters and subsections should group.
- If your PDF has no bookmarks, add them in a PDF editor first, or use split by text or a page-range split instead.
- Keep bookmark titles free of characters like slashes or colons where possible, since the titles become filenames inside the ZIP.
- Long documents produce large ZIPs; there is no upload involved, but leave the tab open until the download completes.
Frequently asked questions
What are PDF bookmarks exactly?
Bookmarks, sometimes called the outline, are the clickable table of contents shown in a sidebar in most PDF readers. Authors and export tools like Word or InDesign add them to mark chapters and sections, and this tool uses those same markers as split points.
How are the output files named?
Each file takes the title of the bookmark it starts at, so a bookmark called "Appendix B" yields a file named after it. Characters that are illegal in filenames are adjusted automatically so every file extracts cleanly from the ZIP.
My PDF has no bookmarks. Can I still use this?
Not directly, since the outline is what defines the split points. Either add bookmarks in a PDF editor first, or use PDFora's split by text tool if a repeating keyword marks your section starts.
Why does the result download as a ZIP file?
A bookmarked document often splits into ten, twenty, or more pieces, and a single ZIP is far easier to download than a click-per-file marathon. Extract it and all the named PDFs appear in one folder.
Does the tool split at nested bookmarks too?
No, only top-level entries start new files, and everything nested beneath a bookmark travels with it. That keeps subsections inside their chapter instead of scattering a document into dozens of fragments.
Is this really free, and is my document private?
Yes to both. There is no signup, no watermark, and no usage cap, and the file is parsed and split entirely in your browser, so it is never transmitted to a server. Processing time depends on your device and the document's size.