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How to Add a Watermark to a PDF — Text & Image Watermarks Free | PDF AI Work Blog

PDF AI Work Team·July 28, 2026

Protect your PDFs and assert ownership with watermarks. The Watermark tool adds text or image watermarks — diagonal, centered, or tiled across every page.

Watermark Uses

  • Confidential or Draft stamps
  • Copyright notices
  • Company logos for brand identity
  • "Do Not Copy" or "Sample" overlays
  • Document version tracking
  1. Open Watermark
  2. Upload your PDF
  3. Enter watermark text or upload a logo
  4. Adjust opacity, rotation, and position
  5. Download the watermarked PDF

For permanent information removal, use Redact PDF. For adding headers: Header & Footer.

Free, client-side, no signup. Add a watermark now.

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