Add PDF Bookmarks

Quick answer: Add or edit PDF bookmarks so readers can jump through long documents from the sidebar. Open PDF 书签 — everything runs locally in your browser, and files never leave your device.

Steps

1. Upload the PDF to the Bookmarks tool.
2. Add bookmarks with a name and target page.
3. Nest them into a hierarchy (chapter → section) by dragging.
4. Download the PDF — the outline appears in any reader's sidebar.

Important notes

• Bookmarks point at pages, not text — if content shifts to different pages, rebuild the outline.
• Merging PDFs usually scrambles or drops bookmarks; rebuild the outline after merging.
• For formal documents, bookmark names should match the printed headings exactly.

Common questions

Can bookmarks be generated automatically? If the PDF has real heading structure (not just visually large text), the tool can derive an outline; scanned files need manual bookmarks.

Bookmarks vs a TOC page? A TOC page is paper navigation; bookmarks are clickable and always one click away. Use both.

Pro tips

Build outlines in the order a reader navigates, not the order pages appear: top-level entries should be the questions a reader jumps for (Overview, Pricing, Signatures, Appendix), even if that means non-sequential page targets — bookmarks point anywhere. Keep nesting to two levels; three-level outlines in a 30-page document are navigation overhead, not help. For documents that get revised, make rebuilding the outline part of the revision checklist, because a bookmark pointing ten pages off is worse than no bookmark at all.

Do bookmarks survive merging? Rarely cleanly — merge first, rebuild the outline second, and consider bookmark names that include source document names in merged files.