PDF Watermark
Add a text watermark to every page of a PDF online for free. Customize text, opacity, and position. No upload to servers — 100% browser-based.
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Add a text watermark to every page
Add a Text Watermark to Your PDF
Add a text watermark to every page of a PDF online for free. Customize text, opacity, and position. No upload to servers — 100% browser-based. AllToolsFree processes everything locally in your browser using JavaScript and WebAssembly — your files are never uploaded to any server. This makes it one of the most private and secure free online tools available.
Frequently Asked Questions
How do I add a watermark to a PDF?
Upload your PDF, type your watermark text, adjust the opacity, and download the watermarked PDF. The watermark is added to every page.
Can I adjust watermark transparency?
Yes. Use the opacity slider to control how visible the watermark appears — from barely visible to fully opaque.
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