PDF Tools
Add Watermark to PDF
Stamp text watermarks on PDF pages in your browser.
No uploadCustom textBrowser tool
PDF watermarking in your browser
This tool uses pdf-lib to add text watermarks to all pages of a PDF. All processing happens locally, so your files never leave your device. Customize the watermark text and opacity to suit your needs.
Questions
Can I use custom text?
Yes. Enter any text you want to use as a watermark, such as CONFIDENTIAL, DRAFT, or your company name.
Can I adjust opacity?
Yes. You can set the opacity to make the watermark more or less transparent.
Is the PDF uploaded?
No. Watermarking happens entirely in your browser.