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v2.29.0

Watermark a PDF — Free, In Your Browser

Stamp a text watermark on a PDF in your browser — CONFIDENTIAL, DRAFT, your name, in any language — across the page or repeated, with the opacity and angle you choose. Free, never uploaded.

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Watermark a PDF — Free, In Your Browser

Before a contract draft, an exam paper or a portfolio leaves your hands, a watermark says what it is and who it came from. Type the text — CONFIDENTIAL, DRAFT, SAMPLE, a name or a company, in English, Korean or any other language — choose the colour, how transparent it is, its angle and size, once across the middle or repeated over the page, and check every page in the preview before you save. The watermark is laid over each page as a translucent picture of your text. All of it happens in your browser: the document is never uploaded, which matters most for exactly the documents people watermark.

Any Text, Any Language

CONFIDENTIAL, DRAFT, 대외비, your name — the text is drawn with your computer’s own fonts, so every script works.

Opacity, Angle, Size

From a faint 5% to a bold 80%, diagonal or straight, once across the page or repeated in a pattern.

All Pages or Some

Watermark the whole document or only the pages you list, and see each one in the preview.

Never Uploaded

The documents people watermark are the ones they least want on someone else’s server. This one stays on your device.

!How It Works, Step by Step

1

Drop the PDF onto the page. It is opened in your browser — nothing is uploaded.

2

Type the watermark text and choose its colour, opacity, angle and size.

3

Pick once-centred or repeated, and which pages; check them in the preview.

4

Click Add watermark & download. The original file is left as it was.

In Your Browser vs. on a Server

FeatureLocal (Us)Cloud Tool
PrivacyWatermarked in your browser, never uploadedConfidential PDF uploaded to a server
Non-Latin text (Korean, Japanese…)YesOften only Latin fonts
Preview before savingEvery page, exactly as savedOften none
Image (logo) watermarksNot yet — text onlySome tools

Technical FAQ

How do I add a watermark to a PDF for free?
Drop the PDF onto this page, type the watermark text, choose how it looks and click Add watermark & download. It runs in your browser — no upload, no account, and no extra mark of ours on the result.
Can the watermark be in Korean or another language?
Yes. The text is drawn with the fonts on your own device and placed as a translucent image, so any language your computer can display works — 대외비, 社外秘, Конфиденциально.
Can someone remove the watermark?
Someone with a PDF editor can, as with any PDF watermark: it is an object laid over the page. A watermark marks a document and discourages copying; it does not lock it. For real protection, share less of the document or use a password.
Will the watermark hide the text underneath?
Not at the default 25% opacity — the page stays readable through it. Lower the opacity for a fainter mark, or use the repeated layout with a smaller size.
Can I watermark only some pages?
Yes. Choose pages and enter a range such as 1-3, 7. Only those pages get the watermark.
Is the PDF uploaded?
No. It is opened, watermarked and saved inside your browser tab; you can confirm it in the Network tab of your browser’s developer tools.
Can I still select and search the text of the PDF afterwards?
Yes. The original text is untouched; the watermark is an image on top of it and is not part of the searchable text.

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