Add a text watermark to every page of a PDF. Customize the text, font size, opacity, rotation angle, color, and position (center or diagonal). Perfect for marking documents as "Confidential", "Draft", or "Do Not Copy". All processing is done in your browser.
Drop a PDF file here or click to upload
Single PDF file, max 50 MB.
LevnTools PDF Watermark lets you manage and transform your PDFs directly in your browser. Everything runs locally in your browser — your PDF documents never leave your device. Unlike cloud-only alternatives that require uploads and accounts, this tool is completely free with no usage limits or watermarks. It is designed for professionals handling contracts and reports, students organizing research papers, teams collaborating on shared documents — anyone who needs a fast, reliable pdf tool without the overhead of installing software. Just open the page and start working.
PDF Watermark is used by a wide range of people. Explore how different groups use this tool:
Combine multiple PDF files into one document with drag-to-reorder.
Split PDFs into individual pages or extract custom page ranges.
Reduce PDF file size by stripping metadata, forms, and annotations.
Resize images with custom dimensions, percentage, or social media presets.
Convert text to camelCase, snake_case, kebab-case, and 7 more.
Upload your PDF, enter your watermark text (e.g. "CONFIDENTIAL"), adjust the font size, opacity, rotation, and color to your liking, and click "Add Watermark". The watermark is applied to every page of the document.
Yes. You can control the watermark text, font size (10-72px), opacity (5-100%), rotation angle (-90° to 90°), color (any hex color), and position (centered or diagonal). This gives you full control over how the watermark looks.
Yes. The watermark text is drawn on every page of the PDF in the same position and style. This ensures consistent branding or security marking throughout the document.
The watermark is drawn directly onto the page content. It cannot be easily removed with standard PDF tools, which makes it suitable for security and branding purposes.
Yes. All watermarking is done locally in your browser using pdf-lib. No files are uploaded to any server. Your documents are never shared or stored.