API WatermarkAdd Watermark to PDFs
Stamp "CONFIDENTIAL" on your documents or add your company logo behind text. Secure your PDFs against unauthorized use in seconds.
Upload a PDF
Drag and drop your document here, or click to browse. Maximum file size is 25 MB.
Watermark Settings
Configure how it appears on your PDF.
Dynamic Variables
Insert these in your text to auto-fill values:
Preserve Layout & Quality
Our tool applies watermarks without flattening or rasterizing your documents. Text remains searchable and formatting is preserved.
Confidential & Safe
Sensitive contracts are handled with care. Your uploaded files are never shared or stored permanently after processing.
Deter Unauthorized Use
Mark drafts, embargoed reports, or proprietary ebooks with unremovable semi-transparent text to maintain strict control.
How to Watermark a PDF Document
Need to stamp a document as internal-only? Our free PDF watermark editor makes it incredibly easy. Just upload your PDF file, dial in a customized text layer (like "DRAFT" or "INTERNAL USE ONLY"), rotate it diagonally, lower the opacity so it doesn't block text, and overlay it across every page automatically. It's the simplest way to add accountability to your shared documents online.