What CSV format do you expect?

Header line: title,page,level. Level 0 is top-level; higher numbers nest under the previous lower level, same as many outline imports.

Will this keep my original PDF features?

The tool writes a new outline (bookmarks) into your file. Other content is preserved as loaded by pdf-lib; very complex PDFs should be checked in your viewer after download.

No. Everything runs locally in your browser.

Edit Bookmarks Online Free

Add, edit, delete and manage PDF bookmarks. All processing happens in your browser. No uploads, no signup—your files never leave your device.

Drop your PDFs here, or click to choose files

Your files never leave your device. All processing happens in your browser.

Auto-extract existing bookmarks when opening the PDF

How to use

Upload PDF

Open your PDF. Optionally enable auto-extract to load existing outlines as editable bookmarks.

Build the outline

Add bookmarks for the current page, nest children, edit titles/colors/styles, set precise destinations (pick X/Y on the page), import CSV (title,page,level) or JSON, and drag to reorder.

Save

Download a new PDF with your bookmark tree embedded. Processing stays in your browser.

Frequently asked questions

Table of Contents
Generate a table of contents from PDF bookmarks.
PDF Editor
Annotate, highlight and edit PDF documents.
Organize PDF
Reorder, duplicate and organize PDF pages.