PDF ： PDF 、
PDF ：、，；、、，，，，、，、、、，。
About PDF Bookmarks
A Table of Contents for Any PDF
Plenty of PDFs arrive without an outline — scanned reports, exported slides, merged documentation, ebooks that were never tagged. Without bookmarks, the only way to navigate a 200-page document is scrolling and guessing. This tool lets you build a proper clickable outline: a sidebar tree of named entries that jump straight to a page.
If your PDF already has bookmarks, they're loaded into the editor the moment the file opens, so you can rename, retarget, reorder and re-nest them instead of starting from scratch. If it doesn't, you can add entries one by one, paste a whole list at once, or let the tool find the headings for you.
Three Ways to Build an Outline
Write it yourself, import it, or generate it — then refine everything in the same tree editor.
Manual Tree Editor
Add bookmarks one at a time, then drag rows to reorder them or nest them under a parent — up to three levels deep.
Heading Detection
Scan the document for lines that look like headings — larger or bolder than body text — and turn them into a nested outline automatically.
List Import
Paste JSON like [{"title":"Intro","page":1}] or one "Title | page" per line, indented two spaces per level, and import it in one step.
Live Page Preview
Selecting a bookmark renders the page it points at, so you can verify a retargeted entry without leaving the editor.
Tune Detection Until It Matches Your Document
Heading detection isn't one-size-fits-all. A sensitivity slider controls how much bigger than body text a line must be to count as a heading — lower it for subtle documents, raise it when captions keep getting picked up. You can also include bold lines, cap the outline depth, and add regular-expression patterns per level, like ^Chapter\s+\d+ for level one or ^\d+\.\d+ for level two.
Detection results land in the same editable tree as everything else, so the workflow is: generate, then fix the handful of entries that need a different title or page. Existing bookmarks, imported lists and detected headings can be mixed freely.
How It Compares
Most ways of getting bookmarks into a PDF involve desktop software or starting the document over.
| 功能特性 | OxygenPDF | Desktop PDF editors | Re-exporting from source |
|---|---|---|---|
| Reads and edits existing bookmarks | |||
| Auto-detects headings | Rarely | ||
| Import a bookmark list | |||
| Drag-and-drop nesting | Varies | ||
| Works on PDFs you didn't create | |||
| Free, no install, no upload | Varies |
Your Document Never Leaves Your Device
The PDFs that most need bookmarks — contracts, manuals, theses, internal reports — are often exactly the ones you shouldn't upload to a random website. Most online PDF tools send your file to a server for processing.
OxygenPDF reads, edits and rewrites the PDF entirely in your browser. Nothing is transmitted, and closing the tab wipes the data. Even password-protected files are unlocked locally — the password is used to decrypt the document in memory and goes nowhere.
PDF ： PDF 、: 常见问题解答
关于此工具及其工作原理的常见问题。
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