Private browser file tool
PDF Watermark & Page Numbers
Add a text watermark and page numbers to every PDF page.
Useful for draft labels, ownership marks, review copies, and organized handouts.
How it works
- Choose PDF files from your device.
- Process them locally in your browser.
- Download One PDF with a watermark and/or page numbers.
Limits and support
- This is a watermark and page-number tool, not a general PDF editor.
- It applies one watermark across all pages and optional page numbers.
- Non-Latin watermark appearance depends on fonts available on the device.
- Existing PDF content, images, and layout are not otherwise changed.
Selected file data is processed on your device and is not uploaded to CobaltPebble for processing.
PDF Watermark & Page Numbers FAQ
- What files does it accept?
- PDF; up to 1 file at a time.
- What does it create?
- One PDF with a watermark and/or page numbers
- What should I do if processing fails?
- Enter watermark text or enable page numbers; this tool does not edit existing PDF text, images, or layout.