PDF
Add a Watermark to PDF
Type your text and adjust the opacity and angle: it is overlaid on every page to protect your document. Everything happens in your browser, no file is uploaded.
Frequently asked questions
Can I control how visible the watermark is?
Yes, you can adjust the opacity so the text appears as a subtle background or a bold overlay.
Is this tool really free?
Yes — completely free, with no sign-up, no ads and no artificial limits.
Are my files kept or shared?
No. All processing happens directly in your browser: your file is never uploaded to our servers, stored, or shared. It never leaves your device.
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