Stamp custom text or confidential markings onto every page of your PDF.
Drag or click to choose your file
100% secure in-browser processing • Max 100MB
Approximate preview — applied to the full document upon download
Adding watermark to PDF...
Your confidential documents are never uploaded to any server. All processing runs directly on your device using blazing-fast WebAssembly.
3 simple and fast steps to process your documents in seconds
Choose the PDF file you want to watermark.
Type custom text or upload a logo, then adjust transparency and angle.
Click apply to generate and download your watermarked PDF instantly.
Comprehensive answers regarding privacy, file limits, and usage
Step-by-step tutorials to master the tools and solve daily tasks
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