FileopiaPDF Bookmark Editor
Add, edit, rename, nest and remove bookmarks (outline) in a PDF with a simple text editor. Create a clickable table of contents for long documents. Free and private.
- Upload
- Options
- Download
- ✓ 100% free
- ✓ No sign-up
- ✓ No limits
- 🔒 Files never leave your device
How to: PDF Bookmark Editor
- Select a PDF – existing bookmarks are loaded as text.
- Edit lines as “Title
- page” and indent with two spaces to nest.
- Save and download the PDF with the new bookmarks.
Long reports, e-books, manuals and scanned documents are much easier to navigate with bookmarks, but most free tools cannot create them. This editor shows the bookmarks of your PDF as plain text, one per line with its page number. Rename entries, change pages, indent to create chapters and sections, add new ones or clear them all, then save.
Common uses
- Add a navigable table of contents to scanned books and reports.
- Fix wrong or missing bookmarks after merging PDFs.
- Create chapter bookmarks for e-books, theses and manuals.
- Remove messy auto-generated bookmarks before sharing.
Tips for best results
- Use “Add one bookmark per page” as a quick start, then rename the important pages.
- Indent with two spaces per level; three levels are usually enough.
- Keep titles short so they fit in the reader's sidebar.
- Use Split PDF by Bookmarks afterwards to split chapters into files.
The text format
Each line is one bookmark: the title, a vertical bar, then the page number, for example “Chapter 2 – Methods | 14”. Two leading spaces make a bookmark a child of the line above, four spaces a grandchild, and so on. Blank lines are ignored, and the editor reports the line number if a page is outside the document.
Opening with the bookmarks panel
When the option is ticked, the PDF asks readers to show the bookmarks panel automatically when the file opens, so readers notice the navigation immediately.
Nothing leaves your device
Reading and writing the outline happens in your browser with pdf.js and pdf-lib.
Why use Fileopia for PDF Bookmark Editor?
| Fileopia | Typical upload-based sites | |
|---|---|---|
| Files uploaded to a server | No – processed on your device | Yes |
| Sign-up required | Never | Often for bigger jobs |
| Hourly / daily task limits | None | Common on free plans |
| Watermark on output | Never | Sometimes |
| Works offline after loading | Yes, for most tools | No |
Your files never leave your device
PDF Bookmark Editor runs entirely in your browser using JavaScript and WebAssembly. Your files are read from your disk into this tab, processed in memory and saved straight back to your downloads folder – they are never uploaded to Fileopia or any third party.
- Test it yourself: once this page has loaded, switch off Wi‑Fi or mobile data and run the tool – it keeps working.
- Check the network: open your browser’s developer tools (F12 → Network) while processing; you will see no file upload requests.
- Nothing to delete: close the tab and the data is gone – there is no server copy, no retention period and no account.
Frequently asked questions
What are PDF bookmarks
Bookmarks, also called the outline, are the clickable table of contents shown in the sidebar of PDF readers such as Adobe Acrobat, Preview, Chrome and Edge. Each bookmark jumps to a page.
Does editing bookmarks change the pages
No. Only the outline is replaced; page content, links, forms and text stay exactly as they were.
Is PDF Bookmark Editor really free?
Yes. Every tool on Fileopia is 100% free with no file limits, no sign-up and no watermarks. The site is supported by unobtrusive ads.
Are my files uploaded to a server?
No. Fileopia processes your files directly in your browser using JavaScript. Your documents never leave your device, so they stay completely private.
Does it work on mobile?
Yes. Fileopia works in any modern browser on Android, iPhone, iPad, Windows, Mac and Linux.