Add bookmarks to a PDF
A long PDF without an outline is slow to get around. This tool finds the headings in the document by their font size and lists them for you to tick and rename, then writes them into the PDF as bookmarks: the outline in the reader’s sidebar, where a click jumps to the heading.
Drop a PDF here
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- Files are not uploaded
- No sign-up
- No ads, no watermark
How to Add bookmarks
- 1
Open your PDF
- 2
Go through the headings that were found, tick the ones you want and rename them if needed
- 3
Save the PDF with its bookmarks
Highlights
Headings found by font size
Text in a larger font size is treated as a heading and listed automatically.
Tick and rename
Untick the headings you don’t need and change any name that doesn’t fit.
Click to jump
Once written into the PDF, the bookmarks show in the reader’s sidebar, and clicking one jumps to its heading.
FAQ
Why were no headings found in my document?
Headings are recognized by their font size. If all the text in a document has the same size, headings cannot be told apart from body text and there is no result.
What are PDF bookmarks?
An outline stored in the PDF and shown in the reader’s sidebar. Clicking an entry jumps to its place in the document. Adding bookmarks does not change what is on the pages.