Add a watermark to a PDF

Mark a document as CONFIDENTIAL, DRAFT or anything you like with a diagonal text watermark across every page — done privately in your browser.

Type your watermark text, choose how strong it appears, and download. The watermark is added on your device, so the document never leaves your computer.

How it works

1. Add your PDF. Drop it in or click to choose it.
2. Set the watermark. Type the text and choose the opacity.
3. Download. Save the watermarked PDF.

Frequently asked questions

Is my PDF uploaded?

No. The watermark is applied in your browser; the file is never uploaded.

Does meldpdf add its own watermark?

Never. The only watermark on your PDF is the text you choose.

Can I make the watermark subtle?

Yes — pick the Light opacity for a faint background mark, or Strong for a bold one.