PDF Watermark

Upload a PDF and stamp every page with a custom text watermark — set the label and opacity, then download the watermarked file without uploading to any server.

  • Free to Use
  • No Signup
  • Privacy Friendly
Add watermark to PDF

How to watermark a PDF

  1. 1

    Upload your PDF

    Drop or browse to select the document you want to watermark.

  2. 2

    Set watermark text

    Enter text like CONFIDENTIAL or DRAFT and adjust opacity from subtle to prominent.

  3. 3

    Download watermarked PDF

    Click download to save the PDF with the watermark on every page.

PDF text watermarks

A text watermark overlays semi-transparent text diagonally across each page. Lower opacity (10–30%) marks documents subtly; higher opacity (50%+) makes status unmistakable.

  • CONFIDENTIAL — legal and HR document marking
  • DRAFT — work-in-progress review copies
  • SAMPLE — preview documents before purchase

Why Use This Tool?

  • Every Page

    Watermark stamps all pages in one operation.

  • Opacity Control

    From subtle 10% to bold 100% visibility.

  • Quick Marking

    Mark draft reports and confidential docs on any device.

  • Local Only

    pdf-lib applies watermarks in your browser.

Frequently Asked Questions

Can I use image watermarks?

This tool adds text watermarks only. For logo watermarks, use a desktop editor or design tool.

Does watermarking prevent copying?

Watermarks deter casual sharing but do not encrypt or DRM-protect the PDF.

Will watermarks print?

Yes. Watermarks are embedded in the page content and appear when printed.

Can I remove a watermark later?

This tool adds watermarks permanently. Keep an unwatermarked original if you need both versions.

Is this PDF watermark tool free?

Yes. Unlimited watermarking with no signup.

PDF Watermark — TetraKits

Mark Documents DRAFT or CONFIDENTIAL Instantly

Sharing review copies and internal reports requires visible status marking — but enterprise PDF tools are expensive and cloud watermark services upload your files. Stamp text locally and download in seconds.