How to add bookmarks to a PDF

A long PDF without bookmarks means scrolling to find anything. Bookmark PDF adds a navigation outline, the panel most readers show on the left, so a reader can jump straight to the section they need.

What you need

• One PDF file, up to 100 MB.
• The page number for each bookmark you want to add, and a short title for it.

How to add bookmarks to a PDF, step by step

1. Open Bookmark PDF and choose your file.

   

2. Fill in a title and a page for each bookmark. Trying to save with no title filled in shows a clear warning instead of doing nothing.

   

3. Add as many as you need. Use "Add another" for each extra row, and the trash icon to remove one.

   

4. Select "Add these bookmarks" and download the result.

   

Credits: this tool runs in your browser and uses 1 credit per run, which your free daily credits cover. You get 10 free credits a day, or 25 with a free account.

What we checked

In testing, two bookmarks pointing at real pages saved correctly: the file gained a proper navigation outline and was set to open with the bookmarks sidebar showing. Trying to save with no bookmark title at all produced a clear warning rather than a silent, empty result. Choosing a different file starts a fresh bookmark list, so bookmarks from one document never carry into the next.

Why bookmark a PDF

• Long reports and manuals. Bookmarks for each section let a reader skip straight to the part they need.
• Contracts and agreements. A bookmark for each clause or signature page saves a reader from scrolling through pages of boilerplate.
• Anything you will reference repeatedly. A bookmarked reference document is far easier to use than one you have to search through each time.

Tips

• Count your pages first. Know the page number for each section before you start filling in rows.
• Pair with viewer preferences. Use Set PDF Viewer Preferences if you want to control the sidebar setting separately.