PDF tools
Watermark PDF
Stamp diagonal text across every page, with colour and opacity control.
Runs entirely in your browser — nothing is uploaded
Drop a PDF to watermark
or browse
Up to 100 MB. It never leaves your device.
Frequently asked questions
Can I use my own watermark text?
Yes. Type any text you like, or pick one of the presets such as DRAFT or CONFIDENTIAL. A live preview shows the size, angle, and opacity before you apply it.
Is the watermark applied to every page?
Yes, the watermark is drawn centred on every page of the document.
Can the watermark be removed afterwards?
The watermark is drawn into the page content, so it is not a layer that can simply be toggled off. Keep your original file if you need an unmarked copy.