TOC-Accurate Boundaries
Each output matches exactly one TOC entry - no misaligned cuts.
Split PDF by Table of Contents
Use your PDF's table of contents as a precise roadmap to divide it into chapter and section files automatically.
The Connection Between TOC and PDF Bookmarks
In most professionally produced PDFs, the table of contents is directly tied to the document's bookmark outline.
When a PDF is exported from Word, InDesign, or LaTeX with proper heading styles, each TOC entry is automatically linked to a corresponding bookmark. This means splitting by bookmarks is functionally equivalent to splitting by the table of contents.
iMZi PDF leverages this relationship to deliver TOC-accurate splitting without requiring you to manually parse the visible TOC text.
How to Split a PDF by Its Table of Contents
The bookmark outline mirrors your TOC - let iMZi do the rest.
1. Verify Your PDF Has a Linked TOC
Open the PDF in any reader and confirm the TOC entries are clickable links - this means bookmarks exist.
2. Upload to iMZi PDF
Drop the PDF onto the Split by Bookmarks tool. TOC-linked bookmarks appear in the detected list.
3. Download TOC-Split Files
Click Split PDF and receive one file per TOC entry, organized in TOC order.
TOC-Based Splitting for Structured Documents
Honor the document structure its author defined in the table of contents.
Chapter and Sub-Chapter Support
Split at top-level TOC entries or drill down to sub-section level.
TOC Entry as Filename
Output files carry the TOC entry title as their filename for easy identification.
No Text Parsing Required
No need to read and interpret the visible TOC text - bookmark data is used directly.
Encrypted & Private
Document contents remain private throughout processing and after.
Free Tool
TOC-based splitting is available free with no restrictions.
What If the TOC Is Not Linked to Bookmarks?
Some PDFs - particularly older scanned documents - contain a visual TOC page but no digital bookmarks. In this case, use iMZi's OCR tools to process the document, then add bookmarks manually before returning to the bookmark splitter.
Documents Where TOC-Based Splitting Excels
These document types almost always have TOC-linked bookmarks.
Academic textbooks with numbered chapters
Technical standards with clause-based TOCs
Corporate reports with section-level TOCs
Legal briefs organized by argument
Training manuals with module TOCs
Publisher-supplied manuscripts
Frequently Asked Questions
Find answers to common questions about this tool.
Use Your PDF's TOC to Guide Every Split
Table of contents entries map directly to bookmarks - let iMZi split at every one.