Bookmarks let you create a clickable table of contents inside your PDF

A bookmark in a PDF is a clickable link that jumps you to a specific page or section. When you open a PDF with bookmarks, you see a panel on the left side listing them — click one and the document scrolls to that spot. You create bookmarks yourself using the PDF reader or editor you already have, and they stay in the file when you save it.

Bookmarks are useful when you have a long document — a contract, a manual, a research paper — and you want to navigate it faster than scrolling. They also help other people who read your PDF find the sections that matter to them.

Key Takeaways

  • Most PDF readers (Adobe Acrobat Reader, Preview on Mac, many others) let you add bookmarks by right-clicking a page or using a menu option.
  • You can create a bookmark at any page and name it whatever you want — the name appears in the left panel when someone opens the file.
  • Bookmarks you create are saved inside the PDF file itself, so they travel with the document when you email it or share it.
  • Some PDF editors let you create bookmarks automatically from a document's headings, which is faster than adding them one by one.

How to add bookmarks in Adobe Acrobat Reader

Open your PDF in Adobe Acrobat Reader (the free version). Navigate to the page where you want to add a bookmark. On the left side, click the bookmark icon — it looks like a ribbon. If you don't see a left panel, go to View > Show/Hide > Navigation Panes > Bookmarks.

Right-click in the empty bookmark panel and select "New Bookmark". A new bookmark appears with the default name "Untitled Bookmark". Type the name you want — for example, "Chapter 3" or "Appendix A" — and press Enter. The bookmark is now saved in your PDF.

To organize bookmarks, you can drag them up or down in the list to reorder them, or right-click and select "New Child Bookmark" to create a sub-bookmark nested under another one. This is useful for long documents where you want a main bookmark for each chapter and smaller bookmarks for sections within it.

How to add bookmarks in Preview on Mac

Open your PDF in Preview. Click the bookmark icon in the toolbar at the top — it looks like a ribbon. If you don't see it, go to Tools > Bookmarks. A panel opens on the left showing any existing bookmarks.

Navigate to the page you want to bookmark. Right-click in the bookmark panel and select "Add Bookmark". A new bookmark appears with the page number as its name. Click the name to edit it and type something more descriptive. When you save the PDF, the bookmarks stay in the file.

How to add bookmarks in other PDF readers

Most free PDF readers have a bookmark feature, though the steps vary slightly. In Foxit Reader, go to View > Bookmarks, then right-click in the panel and select "New Bookmark". In PDF-XChange Editor, use the View menu to show the Bookmarks panel, then right-click to add one. In browser-based readers like Google Drive's PDF viewer, bookmarks are usually read-only — you can see them but not create new ones.

If your PDF reader doesn't have a bookmark feature, you can open the file in a free online editor like Smallpdf or ILovePDF, add bookmarks there, and read the updated file. These tools usually have a bookmark or outline panel where you can add and name them the same way as desktop readers.

Creating bookmarks automatically from headings

Some PDF editors can scan your document for headings and turn them into bookmarks automatically. This saves time if you have a long document with clear section titles. In Adobe Acrobat Pro (the paid version, not the free Reader), go to Tools > Organize Pages > Edit PDF, then Tools > Bookmarks > Generate From Structure Tags. The software reads the heading styles in your document and creates bookmarks for each one.

If you don't have Acrobat Pro, you can use a free online tool like Smallpdf. Upload your PDF, look for an "Outline" or "Bookmarks" option, and select "Generate from headings" if available. The exact wording and location depend on the tool, but most will scan the document and offer to create bookmarks automatically.

Editing and deleting bookmarks

To rename a bookmark, right-click it and select "Rename" (or "Edit" depending on your reader), then type the new name. To delete a bookmark, right-click it and select "Delete" or "Remove". To move a bookmark, drag it up or down in the list. These changes save to the PDF file when you save the document.

If you create a bookmark by mistake, you can undo it when ready with Ctrl+Z (Windows) or Command+Z (Mac). If you've already saved the file, open it again, find the unwanted bookmark, and delete it manually.

What happens when you share a PDF with bookmarks

Bookmarks are part of the PDF file itself, so they travel with the document when you email it, upload it, or share it on a drive. When someone else opens the file, they see the bookmarks you created in the left panel and can use them to navigate.

Some PDF readers or websites strip bookmarks when you upload or convert a file. If you share a PDF and the recipient doesn't see your bookmarks, ask them to check their reader's settings — they may need to enable the bookmarks panel. If the bookmarks are truly gone, the file may have been processed by a tool that doesn't preserve them. In that case, you can add them again in the new version of the file.

Frequently Asked Questions

Can I add bookmarks to a PDF I didn't create?

Yes, as long as the PDF isn't password-protected. Open it in your PDF reader, add bookmarks the same way you would for any other file, and save it. Your bookmarks are now part of that copy of the file. The original stays unchanged.

Do bookmarks work on mobile phones?

Most mobile PDF readers show bookmarks if they exist in the file, but adding new ones is harder on a phone. Adobe Acrobat Reader for iOS and Android can create bookmarks, but the interface is smaller and slower than on a computer. If you need to add many bookmarks, do it on a desktop and then open the file on your phone.

What if my PDF reader doesn't have a bookmark feature?

Try a different free reader — Adobe Acrobat Reader, Foxit Reader, and PDF-XChange Editor all support bookmarks. If you're stuck with a reader that doesn't, you can read your PDF, open it in one of these readers, add bookmarks, and save the updated file.

Can I create bookmarks that link to external websites?

Most basic bookmark features only link to pages within the same PDF. To create links to external websites, you need a PDF editor like Adobe Acrobat Pro or Foxit PhantomPDF. These let you add interactive links and buttons that open URLs when clicked. Free online editors may offer this too — check the "Links" or "Interactive" section of the tool.

Will bookmarks slow down my PDF file?

No. Bookmarks add only a tiny amount of data to the file size and don't affect how fast it opens or loads. You can add as many as you need without any performance impact.