Create Bookmarks
Add clickable bookmarks (an outline) so readers can jump straight to sections.
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Scrolling through a 90-page PDF to find one section gets old fast. Bookmarks fix that: a clickable outline in the reader's sidebar that jumps straight to any chapter or heading. Well-made PDFs ship with them; most exported and scanned ones do not. This tool lets you add bookmarks to any PDF and give it a proper navigable table of contents.
The format could hardly be simpler. You type one line per bookmark: the page number, a comma, then the title — "1, Cover" on the first line, "3, Chapter 1" on the next, "12, Appendix A" further down. The tool builds the outline from your list and writes it into the PDF. Readers then see the structure in their sidebar and can jump anywhere with one click.
As with every PDFora tool, the file is processed locally in your browser and never uploaded, so internal manuals and client reports stay private. It is free, needs no account, adds no watermark, and works on documents of any length.
How to add bookmarks to a PDF online
- Open your PDF in the tool — it loads in your browser without being sent to any server.
- Skim the document and note the page number where each section begins.
- In the bookmark box, type one entry per line as "page, Title" — for example "1, Cover" then "3, Chapter 1".
- Add a line for every section you want in the outline: chapters, appendices, key exhibits.
- Click to apply, and the tool writes the clickable outline into the PDF.
- Download the file and open the bookmarks panel in your reader to test each jump.
When to use this tool
- Add a chapter outline to a self-published ebook so readers can navigate it like a properly produced book.
- Give a 120-page employee handbook a sidebar table of contents — Policies, Leave, Benefits, Code of Conduct — so staff stop asking where things are.
- Bookmark each exhibit in a merged court filing so the judge's clerk can jump directly to Exhibit C.
- Structure lecture notes by week before sharing them with a class, letting students skip straight to the topic they missed.
- Add section bookmarks to a scanned equipment manual whose original navigation was lost in scanning.
- Outline a long financial report by quarter and statement type before circulating it to the board.
Tips for the best results
- Use the page numbers of the PDF file itself, not the numbers printed on the pages — a preface often pushes them out of sync.
- Keep titles short and scannable; "Chapter 4: Pricing" beats a full sentence in a narrow sidebar.
- List entries in page order so the outline reads top to bottom like a real table of contents.
- Bookmark the cover and any contents page too — readers expect a way back to the start.
- For very long documents, bookmark every major heading, not just chapters; a 200-page file deserves 20 entries, not 5.
Frequently asked questions
What are PDF bookmarks exactly?
Bookmarks — also called the outline — are the clickable navigation panel in the sidebar of most PDF readers. Each entry is a title linked to a page, so clicking "Chapter 3" jumps straight there. They travel inside the file, so everyone you send it to gets the same navigation.
How do I format the bookmark list?
One bookmark per line, written as the page number, a comma, then the title. For example: "1, Cover" on the first line, "3, Chapter 1" on the second, "15, Chapter 2" on the third. That is the entire syntax.
Is this the same as a table of contents page?
It serves the same purpose but lives in the reader's sidebar instead of on a printed page, and every entry is clickable. Many people add bookmarks precisely because their PDF has a printed contents page that cannot be clicked.
Do the bookmarks change the pages of my PDF?
No. The pages, text and layout are untouched. Bookmarks live in a separate navigation structure inside the file, so the document prints and displays exactly as before — it just becomes far easier to navigate.
Will the bookmarks work in every PDF reader?
Yes. The tool writes a standard PDF outline, which Adobe Acrobat, browser viewers, Preview on Mac and mobile PDF apps all understand. The panel may be labelled Bookmarks, Outline or Contents depending on the reader.
Is my document kept private?
Yes. The PDF is processed entirely in your browser and never uploaded, so confidential reports and manuals stay on your machine. The tool is also free, with no signup and no watermarks.