PDF Watermark

Add files, preview watermark, and export locally.

PDF Watermark lets you add a clean text watermark to PDF files directly on your device. Upload one or more PDFs, preview the watermark layout before export, and download the processed files locally. Built for a simple and privacy-friendly workflow: - Add multiple PDF files in one queue - Preview the watermark before exporting - Adjust watermark text, size, opacity, rotation, and density - Export watermarked PDFs locally without sending files to a server - Keep one shared watermark setup across the full export batch This extension is useful for marking documents as CONFIDENTIAL, INTERNAL, DRAFT, SAMPLE, or any custom text watermark you need. All processing happens locally in the browser, which makes it a practical choice for sensitive files and internal documents.