Can I add 'CONFIDENTIAL' diagonally across all pages?
Yes! Type 'CONFIDENTIAL', set rotation to 45 degrees, and apply across all pages with one click.
Tool Categories
Watermark PDF - Add Text & Image Watermarks | 1ClickTools
Add custom text or logo image watermarks to PDF pages. Adjust opacity, angle, font, and placement locally in browser memory.
About This Tool
Adding visible watermarks to PDF files is standard practice when distributing draft manuscripts, confidential business proposals, sample blueprints, or copyright-protected artwork. Watermarks discourage unauthorized copying, clarify document status, and establish brand ownership. Our browser-native PDF Watermark tool allows you to overlay custom text phrases (e.g. 'DRAFT', 'CONFIDENTIAL', 'DO NOT COPY') or brand logo graphics onto PDF document pages. You can adjust text font family, size, color fill, transparency opacity, and diagonal rotation angles. All stamp layering and PDF stream compilation happen directly within local browser RAM. No document bytes are uploaded to remote cloud servers, preserving total confidentiality for your internal company documents.
Frequently Asked Questions
Can I use my company logo as a watermark?
Yes, upload your transparent PNG logo to overlay it onto PDF pages.
Is my document uploaded to a remote web server?
No. 1ClickTools layers watermarks locally in browser memory using WebAssembly.
Can I control watermark opacity so text underneath remains legible?
Yes! Adjust the transparency opacity slider (e.g., 20-30%) for clear background readability.
Can I select specific pages to watermark?
Yes, choose to watermark all pages, odd/even pages, or specific page number ranges.
Will watermarking alter original PDF vector text?
No, watermarks are added as clean overlay layers without degrading original content.
Can I watermark large PDF files?
Yes, process multi-page documents in seconds locally on your computer.
Works on Mac, Windows, and mobile devices?
Yes, fully compatible across all desktop and mobile web browsers.
Can I remove watermarks later?
Keep your un-watermarked original source file for clean editing anytime.
Is 1ClickTools PDF Watermark free?
Yes, 100% free with no fees or limits.