Bivonio

Watermark PDF

Add a text watermark with adjustable angle and opacity.

Add your PDF Enter watermark text and choose its pages, position and size.

Up to 60 characters. Use common letters, numbers and punctuation; emojis are unsupported.

Leave blank to watermark every page.

Position and appearance (optional)

Position is calculated from the visible page orientation.

A central diagonal often works well for drafts and copies.

Between 18 and 72 points. Text shrinks automatically if it does not fit.

Low opacity helps preserve readability.

Your files and text are processed on your device.

How to use this tool and limits

Enter up to 60 characters and choose pages. The font supports common letters and punctuation, without emojis.

PDFs up to 120 MB and 500 pages; adding margins: up to 300 pages. Results depend on available memory. Encrypted PDFs are unsupported. Review forms and signatures after modifying a document.

Guides
How to add a watermark to a PDF

Identify drafts or copies with a readable notice and understand its limits as a protection measure.

How to add a logo or image to a PDF

Prepare a sharp image, preserve readability and apply your logo to the final document version.

Related tools

Merge PDF

Combine complete PDFs in your chosen file order.

Interleave PDFs

Alternate pages from two PDFs, including reversed scans.

Split PDF

Split a PDF into individual pages or custom page ranges.

Frequently asked questions

Are my files uploaded?

No. Your file and result are processed locally in your browser. No account is needed.

What should I check before sharing?

Enter up to 60 characters and choose pages. The font supports common letters and punctuation, without emojis.