iConvertDoc logo iConvertDoc

HomePDF Editor › Watermark PDF

Watermark PDF

Stamp every page with a diagonal watermark — CONFIDENTIAL, PAID, DRAFT or your store name — with adjustable opacity and color.

No uploadNo sign-upFree

This page opens the PDF Editor with the right mode pre-selected. A real PDF editor in your browser: open any PDF, click to add text boxes, draw your signature on a signature pad and place it anywhere, freehand-draw, highlight passages, white-out content, insert images and stamps, then download the edited file. Watermarks and page numbers apply to every page in one click. Because everything runs locally, it's safe for contracts, agreements and forms.

Frequently asked questions

Can I sign a PDF with this?

Yes — click Sign, draw your signature on the pad with mouse or finger, place it on the page, resize and download. The signature is embedded into the PDF itself.

Are my files uploaded to a server?

No — like every iConvertDoc tool, this runs entirely in your browser. Files are processed on your device and never transmitted.

Is it free?

Yes. No sign-up, no limits, no watermark.

Ctrl+K or / to open · Enter to go