PDF Bookmarks
Give your PDF a clickable table of contents and decide exactly how it opens — sidebar, zoom and start page.
Your PDF is edited locally on your device — it is never uploaded.
How to add bookmarks to a PDF
- Add your PDF. Existing bookmarks are loaded into the editor automatically.
- Write the outline. One bookmark per line:
title | page. Indent with two spaces (or Tab) to nest sub-bookmarks. - Set the opening view (optional). Show the bookmarks or thumbnails sidebar, choose single/double page layout, zoom and the page the file opens on.
Frequently asked questions
Is my PDF uploaded?
No. Bookmarks are written into the file entirely in your browser.
Can I edit bookmarks that already exist?
Yes — existing outlines are read into the editor when you load the file. Edit the text and save; the outline is rewritten cleanly.
How do I make nested bookmarks?
Indent the line with two spaces (or press Tab) under its parent. Deeper indent = deeper level, just like a bulleted list.
What do the initial-view settings do?
They're stored viewer preferences: open with the bookmark or thumbnail sidebar visible, as single pages or two-page spreads, at a chosen zoom, on a chosen page. Most PDF readers (Acrobat, browsers) respect them.