SO SimonOS
PDF Tools Live tool

Add Watermark to PDF

Add a centered text watermark to every page of a PDF with local opacity, color, and rotation controls.

Tool Flow

01 Input 02 Process 03 Output

Tool Guide

About the Add Watermark to PDF

Use Add Watermark to PDF when a document needs a clear draft, confidential, internal, or review mark on every page. The tool draws a text watermark locally with adjustable size, color, opacity, and rotation so you can prepare a visibly marked copy without uploading the file.

Common uses

  • Mark a PDF as draft before sharing it for review.
  • Add a confidential or internal-use label across each page.
  • Create a lightweight watermarked copy while preserving the original file.
  • Apply a consistent text overlay without opening a full PDF editor.

Browser workflow

  1. 01 Choose the PDF from your device.
  2. 02 Set the watermark text, opacity, color, size, and rotation.
  3. 03 Download the watermarked PDF copy.