Add a watermark to a PDF, free
Stamp a text watermark across every page and see exactly how it looks before you apply it — a live preview updates as you change the text, size, opacity, position, and colour.
Most PlinyPDF tools run entirely in your browser — your file never leaves your device, with no sign-up and no watermark.
Frequently asked questions
Can I preview the watermark first?
Yes — a live preview updates as you change text, size, opacity, position, and colour.
Can I tile or angle the watermark?
Yes — center, tiled, or diagonal, with adjustable rotation.
Are my files uploaded?
No — watermarking runs entirely in your browser.