PDF Watermark
Add a text watermark like CONFIDENTIAL or DRAFT to a PDF — single stamp or tiled across the page, with live preview, opacity, angle and color. Runs locally in your browser, nothing uploaded.
No file handy?
How to watermark a PDF
Choose a PDF, type the stamp text — CONFIDENTIAL, DRAFT, PAID, a company name — then pick a layout: one stamp in a corner or the center, or a diagonal tile repeated across the whole page. Adjust size, opacity, color and angle while the live preview shows the first page exactly as it will export. Everything runs locally in your browser: the document is never uploaded.
PDF Watermark stamps text over the pages of a PDF — CONFIDENTIAL across a contract before sharing it, DRAFT on a proposal that is still moving, PAID on a settled invoice, or your company name tiled over a report so it cannot be passed off as someone else's work. You choose a single stamp in the center or a corner, or a diagonal pattern repeated across the entire page, and tune size, angle, color and opacity while a live preview shows the first page exactly as it will export.
The stamp is rasterized from your own browser's fonts, so any language works — Latin, Chinese, Japanese, Korean, Arabic, even emoji — with no font files to install. Because everything runs locally, the document itself never leaves your device: that makes the tool safe for the exact kind of paperwork people watermark most, contracts, IDs, financial statements and unpublished drafts. Page rotation is handled automatically, and a page range like 1-3,5 lets you stamp only part of the file.
FAQ
Is my PDF uploaded when I add a watermark?
No. The watermark is drawn entirely in your browser and the file is rebuilt on your device — nothing is sent to any server, and the tool even works offline once loaded.
What text should a watermark say?
Common choices are CONFIDENTIAL, DRAFT, PAID, DO NOT COPY, SAMPLE, or a name and date such as 'Shared with ACME — 2026'. Anything you can type works, in any language.
Single stamp or tiled — which should I use?
A single centered diagonal stamp is the classic for status marks like DRAFT. Tiling repeats the text across the whole page and is better for discouraging re-use of the document, since it cannot be cropped away.
What opacity should I pick?
15–25% keeps the document readable with a clearly visible mark — that is why the default is 22%. Go higher only when the mark matters more than reading comfort, e.g. VOID on a cancelled document.
Can I watermark only certain pages?
Yes. Type a range like 1-3,5 into the pages field and only those pages are stamped; leave it blank to stamp the whole document.
Is the watermark permanent?
It becomes part of the page content, like ink printed on paper — readers cannot toggle it off. Skilled editing software can still alter PDF pages, so treat it as a strong label, not encryption.
Why did my white watermark disappear?
White text is only visible on dark or colored backgrounds. On ordinary white pages choose gray, red or blue — gray at low opacity is the most professional-looking choice.
Does it work with scanned PDFs?
Yes. Scanned pages are just images inside the PDF, and the watermark is stamped on top of them exactly like on text pages.