Is my PDF uploaded to a server?

No. The watermark is applied in your browser with pdf-lib — your file never leaves your device, and there's no signup.

Does the watermark go on every page?

Yes. The text is drawn centred on each page at the size, opacity and angle you choose.

It's merged into each page's content, so it can't be toggled off — keep your original file if you need an unwatermarked copy.

This tool adds a text watermark. For a logo, add it as text for now — image watermarks may come later.

Add a text watermark (CONFIDENTIAL, DRAFT, your name) across every page of a PDF — in your browser, no uploads.

Processed 100% in your browser — nothing you enter here is ever uploaded.

Stamp CONFIDENTIAL or DRAFT across every page before sharing a sensitive file.

Add your name or company across pages so copies are clearly attributed to you.

Label a file as a sample, preview or specific revision at a glance.

Drop a PDF into the box, or click to browse. It's processed in your browser — nothing is uploaded.

Type your watermark text — for example CONFIDENTIAL, DRAFT, or your name.

Pick a size and opacity, and keep it diagonal for the classic look.

Click "Add watermark & download" to save the watermarked PDF.