PDF Bookmarks
View, add, rename, nest and remove the bookmarks (outline) in any PDF.
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How to Add and Edit Bookmarks in a PDF
Bookmarks — also called the outline or table of contents panel — turn a long PDF into something you can actually navigate. Instead of scrolling through 200 pages to find chapter seven, readers click its bookmark and jump straight there. Yet countless PDFs arrive with no bookmarks at all, or with outdated ones after pages were added or removed. PDFDoco lets you see a PDF's existing bookmarks, fix them, and build new ones, entirely in your browser.
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Upload a PDF
Existing bookmarks are shown as an editable, nested list beside the page thumbnails.
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Add or edit
Rename bookmarks, change their target page, or add new ones from any page.
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Organize the structure
Indent to create sub-sections, outdent, reorder, or delete bookmarks.
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Save
Download a PDF whose bookmarks panel opens automatically in most readers.
Nested chapters
Create multi-level outlines: parts, chapters, sections, and sub-sections.
Visual page picking
Point any bookmark at a page by clicking its thumbnail.
Private editing
Your PDF is edited on your device and never uploaded.
Why bookmarks matter in long documents
Manuals, reports, contracts, and ebooks are hard to use without a navigable structure. Bookmarks appear in the sidebar of Adobe Acrobat, browser PDF viewers, Preview on Mac, and most mobile readers, giving readers a clickable table of contents that's always one tap away. They also make documents more accessible to people using screen readers, who rely on structure to move through long files.
Building a clear hierarchy
Use top-level bookmarks for major parts or chapters and indent sections beneath them. Keep titles short and descriptive — they are shown in a narrow panel — and match them to the headings in the document so readers know they've landed in the right place. If you merged several files, the "Bookmark every page" button gives you a starting point to rename and nest.
Theses, court bundles, and submissions
Universities often require bookmarks in electronically submitted theses, and many courts expect bookmarked PDFs for e-filed bundles so judges can jump to exhibits. Tender portals and regulatory submissions frequently have the same rule. Adding a proper outline before you submit avoids rejections and makes reviewers' lives easier.
What happens to existing bookmarks
When you upload a PDF, every bookmark is read along with the page it points to — including bookmarks defined as named destinations by tools like Word and LaTeX. Bookmarks that link to a website or another file are kept exactly as they are. When you save, the old outline is replaced with your edited one, so there are no stale or duplicate entries left behind.
Pro tip: reorganising pages too? Do that first with Organize PDF, then add bookmarks here, so every bookmark points at the final page order.
Frequently Asked Questions
Can I edit bookmarks that are already in my PDF?
Yes. Existing bookmarks are loaded into the editor with their titles, nesting, and target pages, and you can rename, move, re-target, or delete them.
How do I create sub-bookmarks?
Select a bookmark and press Indent to place it under the bookmark above it. Outdent moves it back up a level. You can nest several levels deep.
Will my bookmarks work in all PDF readers?
Yes. Bookmarks are a standard PDF feature supported by Adobe Acrobat, browser viewers, macOS Preview, and mobile PDF apps. Many readers also open the bookmarks panel automatically.
What happens if I delete a bookmark that has sub-bookmarks?
Its sub-bookmarks are kept and move up one level, so you never lose them by accident.
Are links to websites preserved?
Yes. Bookmarks that open a website or another document are kept unchanged and marked as links in the editor.
Is my PDF uploaded?
No. Bookmarks are read and written entirely in your browser, so your document never leaves your device.