Editor de marcadores PDF

How to use

1. Drop your PDF into the upload area — existing bookmarks are read automatically.
2. Add, edit, or remove bookmarks in the list. Enter a title and a page number for each.
3. Use Import JSON / Export JSON to share or reuse a table of contents.
4. Click Apply Bookmarks & Download to embed the outline and save the PDF.

Common uses

• Add bookmarks to PDF online free
• Create a PDF table of contents
• Edit existing PDF bookmarks
• Build a clickable PDF outline
• Remove all bookmarks from a PDF

Related PDF tools

• PDF Merger
• Add Page Numbers
• PDF Watermark
• Compress PDF
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Preguntas frecuentes

Does this upload my PDF?

No. Everything runs locally in your browser using pdf-lib and PDF.js. Your file never leaves your device.

Are my existing bookmarks preserved?

Yes. When you load a PDF, the tool reads all existing bookmarks and displays them in the editor. You can keep, edit, or delete any of them before applying.

What is the JSON import/export format?

A flat JSON array: [{"title":"Chapter 1","page":1},{"title":"Section 2","page":5}]. Use Export JSON to download the current list and Import JSON to load it back or share it with others.

Is there a file size or bookmark count limit?

No imposed limit. The practical constraint is your device memory. Most modern devices handle PDFs with hundreds of pages and hundreds of bookmarks without difficulty.

Are password-protected PDFs supported?

No. Remove the password from the PDF first using your PDF reader, then open the file here.

Does this work on iPhone, iPad, and Android?

Yes. The tool runs in Safari on iOS/iPadOS and Chrome on Android. Tap the upload area to open the file picker.