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Add a text watermark to every page of a PDF.
The Watermark PDF tool is a powerful document protection utility that allows you to overlay custom text onto your PDFs entirely within your browser. Driven by KaruviLab's unwavering commitment to Zero-Server-Upload and Privacy-First standards, this tool guarantees that your intellectual property, legal drafts, and proprietary designs are never uploaded to the cloud. You can confidently watermark highly confidential files knowing that no third party will ever have access to your data.
By utilizing advanced Local-First Execution, our engine renders and stamps your watermarks in real-time. Whether you are adding a subtle 'CONFIDENTIAL' stamp diagonally across a financial report or a 'DRAFT' label on a manuscript, the entire visual processing happens locally on your device's hardware. This means no waiting for file uploads or dealing with queued server processing, resulting in an exceptionally fast, seamless user experience.
Moreover, the Watermark PDF tool is designed for complete Offline Resilience. Once the application has loaded, you can safely disconnect your device from the internet and continue watermarking your documents. This air-gapped capability ensures that you maintain full productivity and absolute data security, even when working in remote locations or strictly controlled corporate environments.
Input
An unwatermarked corporate strategy PDF.Output
The PDF with a red, 45-degree angled 'CONFIDENTIAL' watermark on all pages.Input
A 30-page research manuscript in PDF format.Output
The manuscript with a gray, centered 'DRAFT' stamp.Input
A PDF portfolio of graphic designs.Output
The PDF with a small, opaque '© 2024 Jane Doe' watermark at the bottom of every page.No. We utilize a strict Zero-Server-Upload design. Your files are processed entirely on your device, ensuring maximum privacy.
Yes, the tool features complete Offline Resilience. You can use it without an internet connection once the page is fully loaded.
Absolutely. The tool provides granular controls for text color, font size, rotation angle, and opacity to ensure the watermark fits your specific needs.
By default, you can adjust the opacity to make the watermark semi-transparent, allowing the underlying text and images to remain readable.
Because processing happens locally, the limit is based on your device's memory. It can easily handle large, multi-page documents instantly.