Create a PDF Table of Contents Online

A PDF table of contents — stored internally as a document outline or bookmark list — lets readers navigate directly to chapters and sections without scrolling. Most PDF creation tools support generating one automatically from heading styles, but the resulting PDFs frequently arrive without the outline, or with an outline that needs manual corrections.

This tool treats the bookmark list as an editable table of contents. Add a row for each chapter or section, enter the title and the first page number, and the tool writes a standard PDF outline that any compliant PDF reader will display in its bookmarks panel.

The JSON import/export feature is especially useful for documents that are revised frequently. Export the outline as a JSON file, update the page numbers in a text editor when the document changes, and import it back to update the PDF. This workflow avoids re-entering the entire outline from scratch each time.

The tool is entirely browser-based — no file ever leaves your device. Processing a 300-page PDF with 50 bookmarks completes in under two seconds on a typical laptop.