How to Add Watermark to PDF Online Free

Watermarks are essential for protecting your intellectual property, marking documents as drafts, or branding PDFs with your company name. Our free PDF watermark tool lets you add text or image watermarks to every page of your PDF instantly in your browser.

Types of Watermarks

• Text watermarks — Add words like "DRAFT", "CONFIDENTIAL", or "SAMPLE" across your pages
• Image watermarks — Overlay your logo or brand graphic as a transparent watermark
• Position options — Place watermarks in the center, corners, or tiled across the page
• Opacity control — Adjust transparency so watermarks do not obscure content

How to Add a Watermark

1. Open the watermark tool — Go to our PDF Watermark tool.
2. Upload your PDF — Select the document you want to watermark.
3. Choose watermark type — Enter text or upload an image for the watermark.
4. Customize appearance — Set opacity, position, rotation, and size.
5. Download — Your watermarked PDF is ready.

Best Practices for Watermarks

Use semi-transparent watermarks (30-50% opacity) so they do not distract from the content. Diagonal watermarks across the page are harder to remove than horizontal ones. For draft documents, use a large "DRAFT" watermark in red. For confidential files, a subtle "CONFIDENTIAL" repeated across each page ensures the message is clear without damaging readability.