Add Watermark

Lay a text or image watermark over your PDF to mark drafts, recipients, or confidentiality. Everything runs in your browser — your documents stay on your device.

Conversions

About Add Watermark

Add Watermark overlays a text or image watermark onto your PDF, useful for drafts, recipient identification, or confidentiality marks such as "CONFIDENTIAL — John Doe". You can set opacity, position, and size, and apply the watermark either to specific pages or every page. The watermark is burned into the PDF visually but does not encrypt or lock the document — pair it with a password if you also need access control. All processing runs locally in your browser, so even confidential client reports never leave your device.

Best for

  • Marking confidential drafts shared with reviewers or clients
  • Stamping recipient names on contracts to deter leaks
  • Branding sample chapters with agency logos before sending

Pros

  • +Watermark can be text or a transparent PNG image
  • +Position, opacity, and size are adjustable per watermark
  • +Local processing keeps unreleased documents on your device

Cons

  • −A watermark does not encrypt or lock the PDF — it can be removed by editing tools
  • −Image watermarks increase the file size slightly per page

How to use Add Watermark

  1. 1

    Select or upload the source files from your local device storage.

  2. 2

    Specify conversion settings, options, or target output formats.

  3. 3

    Wait for the client-side browser logic to process the files securely.

  4. 4

    Download the finalized outputs directly to your system.

Frequently Asked Questions

Can I add an image watermark (logo) instead of text?
Yes — upload a transparent PNG or JPG, then choose its position and opacity. Logos are tiled or placed once per page depending on the settings you set.
Does the watermark make the PDF harder to copy or steal?
A watermark identifies documents visually but does not encrypt or lock them. To prevent opening or copying, pair the watermark with password protection in a separate step.
Can I watermark only certain pages of a PDF?
Yes — pick whether to apply the watermark to all pages or only the pages you choose. A common pattern is watermarking only the title page of a confidential document.
Does watermarking reduce PDF quality?
Text watermarks add no images, so file size barely changes. Image watermarks add a small amount of data per page; otherwise the original page content and text stay the same.
Are my confidential PDFs uploaded when watermarking?
No. The watermark is drawn locally in your browser. Confidential reports, legal drafts, and corporate documents never leave your device during processing.

Related tools

FREE

100% Free

No hidden fees, no subscriptions, and no limits. Enjoy complete access to all features gratis.

SIGNUP

No Signup Required

Start converting immediately without creating an account or sharing email address.

PRIVACY

Private & Secure

Your files never leave your device. All processing is completed locally for maximum privacy.

BATCH

Batch Conversion

Convert multiple files simultaneously to save time. Fast and efficient multi-file queue.

LOCAL

Runs in Browser

Utilizes advanced client-side WebAssembly technology to process files directly inside your tab.

FORMATS

200+ Formats

Supports a wide variety of formats including images, documents, audio, video, and more.

USER REVIEWS

Add Watermark Quality Rating

4.8
25 reviews

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