Intelli File

Add a text watermark to a PDF

Stamp text across every page.

Processed in your browser. Your file is never uploaded.
Drop your PDF here
or click to choose from your device

How it works

  1. 1

    Drop your PDF.

  2. 2

    Type the watermark text.

  3. 3

    Download the watermarked PDF.

Stamp DRAFT, CONFIDENTIAL or your own text diagonally across every page, with adjustable size and opacity.

Mark drafts, confidential files or client copies with a diagonal text watermark. Adjust opacity and size so the page stays readable while the message is unmistakable.

What people use it for

  • Mark a contract as DRAFT or CONFIDENTIAL.
  • Discourage reuse of a proposal sent to a client.
  • Label internal versions of documents.

Tips for best results

  • Lower the opacity so the page stays readable.
  • Chinese, Cyrillic and other scripts are supported.
  • Watermarks are visual only; use Protect PDF for access control.

Your files never leave your device

Unlike most online PDF tools, Intelli File does not upload your documents to a server. Everything runs in your browser using your own device, so contracts, IDs and financial records stay private. Only a small usage counter is sent so we can apply daily limits.

Read how we handle privacy

What to do next

After this, you may want to Add page numbers, Protect PDF, or Flatten PDF.

Frequently asked questions

Which characters are supported?+

Latin letters, digits and common symbols. Other scripts are not supported yet.

Can I use an image logo?+

Not yet. Text watermarks are supported today.

Can a watermark be removed?+

It becomes part of the saved PDF's page content, so it is not trivially removable. Keep your original unwatermarked file.

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