⌂ Lunibyte

Watermark a PDF — no upload

Stamp “CONFIDENTIAL”, “DRAFT”, “COPY” or your own text across every page — without sending your document anywhere.

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Drop a PDF here or tap to choose
Type your watermark next

How it works

  1. Choose your PDF.
  2. Type the watermark text and pick layout, transparency and color.
  3. Tap Add watermark and download the result.

Frequently asked questions

Are my files uploaded anywhere?

No. Everything runs 100% in your browser. Your PDF never leaves your device — you can even go offline after the page loads.

Can the watermark be removed?

It is drawn onto each page, so it can’t simply be deleted like a comment — but a determined editor could still cover it. For sensitive documents, also share them only with people you trust.

Which characters can I use?

Letters, numbers and common punctuation in basic Latin script.

📖 Step-by-step guide: Watermark a PDF without uploading it