Stamp text or a logo across PDF pages — with opacity, rotation, position, tiling, and live preview. Presets for CONFIDENTIAL, DRAFT, and more. Never uploaded.
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Processed privately in your browser — files never leave your device
Drop a PDF here or click to choose
Up to 25 files, 200.0 MB each — nothing is uploaded
Opacity is the setting that matters: heavy enough to be unmistakable, light enough that the text underneath is still readable.
Input
agreement.pdf, text “CONFIDENTIAL”, rotated 45°, 20% opacity, tiled across the pageOutput
Every page carries the mark, with the underlying text still legible. A live preview shows the result before saving.Watermark PDF stamps a status onto every page so it can't be missed or cropped out: CONFIDENTIAL across a contract draft, DRAFT on a report that isn't final, SAMPLE over work sent to an unpaid client, or your logo on anything leaving the building.
Text watermarks use the standard PDF fonts with full control of size, color-independent opacity, rotation, and nine-position placement — or tiling that repeats the stamp across the page, the layout that survives screenshots. Image watermarks take your PNG or JPG logo with the same placement engine. A live preview on your actual first page shows the effect before anything is written, and page ranges let you stamp only the pages that need it.
Both your document and your logo stay on your device — for a confidentiality tool, that's rather the point.
Drop a PDF into the tool.
Choose text or image: type your stamp (or click a preset like CONFIDENTIAL), or pick a PNG/JPG logo.
Adjust size, opacity, rotation, and placement — or choose Tiled to repeat it across the page. The preview updates live.
Optionally limit the stamp to a page range.
Click Add watermark and download.
Text watermarks support Latin characters only (standard PDF fonts). Watermarks deter misuse but are not cryptographic protection — a determined editor can remove them. Stamps are placed above page content; content drawn after the fact by forms may overlap.
Drop the PDF here, click the CONFIDENTIAL preset, adjust opacity and rotation to taste (30% opacity at 45° is the classic), and click Add watermark. The preview shows the exact effect on your first page before you commit.
Yes — switch to Image mode and choose a PNG or JPG. PNG transparency is respected, and the logo is embedded locally without ever being uploaded or saved by the tool.
The stamp becomes part of the page content, so casual removal is hard — but determined editing tools can remove any watermark. Treat it as a strong deterrent and status signal, not as security; for confidentiality enforcement, combine it with password protection.
Text watermarks use the standard built-in PDF fonts, which cover Latin characters. Emoji and non-Latin scripts aren't included in those fonts — the tool flags this rather than producing broken output.