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Add text watermarks to PDF pages. Free, private, runs in your browser.
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A PDF watermark is text or a graphic overlaid on each page of a document. Common watermarks include "DRAFT", "CONFIDENTIAL", "SAMPLE", or company names. Watermarks are typically displayed diagonally across the page at reduced opacity so the underlying content remains readable.
Watermarks protect intellectual property, indicate document status, and deter unauthorized distribution. Draft documents should be clearly marked to avoid confusion with final versions. Confidential materials need visible labels. Sample documents sent to prospects benefit from watermarks that prevent misuse while still showcasing the content.
Enter your watermark text and customize its font size, color, opacity, rotation angle, and position. Convertful uses pdf-lib to overlay the text on every page of your PDF. The original content is not modified — the watermark is added as a new layer. All processing happens in your browser.
Yes. Your PDF stays on your device. No upload, no cloud processing. Ideal for watermarking sensitive or confidential documents.
Yes. Set custom text, font size, color, opacity, rotation, and position on each page.