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PDF Split by BookmarksAUTO SPLIT

Scan document outlines, calculate ranges for each index entry, select target boundaries, and export separate PDFs in a single ZIP.

Drag & drop PDF document

or click to browse from your device

How it Works

Sift and slice your PDF documents based on bookmark outlines in 3 simple steps.

01

Upload PDF Document

Upload your bookmarked PDF file to start the outline scanning process.

02

Choose Target Chapters

Review the parsed hierarchical outline index and check the chapter sections you want to extract.

03

Export Separate Files

Click the action button to split the document pages and download a ZIP folder containing the separate files.

Why use our PDF Chapter Splitter?

Automate page range calculations and extract distinct outline sections locally in browser.

Automated Range Calculation

The scanning engine automatically detects page boundaries between subsequent bookmarks to divide files intelligently.

Local Offline Extraction

Your data never leaves your device. All calculations, extraction, and zip compression are executed locally inside RAM.

Flexible Outline Selection

Filter outlines to choose top-level entries only or select specific nested sections individually in an interactive list.

Bookmarked In
Segments Out

Frequently Asked Questions

Common queries regarding splitting PDF files using outline markers.

Q.Can I split a PDF if it has no outline bookmarks?

No. The tool relies on internal bookmark reference metadata to calculate splitting ranges. If your document has no bookmarks, you can add them first using our Bookmark Editor.

Q.Does this tool support nested sub-bookmarks?

Yes. The scanner identifies all hierarchical bookmarks. You can select individual sub-sections or filter to extract only top-level chapters.

Q.Will the extracted PDF files lose formatting or quality?

No. The splitting engine extracts original page contents exactly as they are without re-encoding, preserving all text, images, fonts, and styling.

Q.Is it safe to process sensitive files here?

Absolutely. All page slicing and compilation tasks are performed entirely client-side using local web workers in your browser. No files are uploaded to any servers.

🛠️ Discover Related Creative Workflow Tools

For other bookmark, indexing, and interactive digital document workflows, explore our complete suite of client-side utilities. Easily run the PDF bookmark editor to organize outlines, run the PDF TOC generator to build custom indexes, publish stunning layouts as a 3D e-book publisher, or edit structural content directly using our comprehensive PDF editor.