PDF Watermark — Frequently Asked Questions
Everything you need to know about using PDF Watermark.
Is my PDF uploaded?
No. The watermark is added entirely in your browser using pdf-lib. Your document never leaves your device.
Can I add an image watermark instead of text?
Currently this tool supports text watermarks only. For image watermarks, use our PDF Editor or convert your image to a logo overlay first.
Will the watermark show on every page?
Yes — the watermark is stamped uniformly across all pages of the PDF for consistent branding or marking.
Can someone remove the watermark?
Watermarks are part of the PDF’s page content. Determined users with PDF editors can sometimes remove them, but for casual viewing or print-and-scan workflows, they’re very effective.
What’s the best font size for full-page watermarks?
60-120pt at 45° rotation typically fills the page nicely. Adjust based on text length — short words can go larger, long phrases benefit from smaller sizes.
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Add text watermarks across PDF pages. Free, no signup, 100% private.
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