Whether you are sending a draft for review, distributing internal documents, or protecting intellectual property, adding a watermark to a PDF is one of the simplest and most effective ways to mark ownership, indicate document status, or deter unauthorized sharing.
Watermarks serve several practical purposes in professional and personal contexts:
PDFly's Add Watermark tool runs entirely in your browser. Your files are never uploaded anywhere. Here is how to use it:
The two most important settings for a watermark are where it appears and how visible it is. Here are some common configurations:
For opacity, 10-20% keeps the watermark subtle enough to read through it, while 40-60% makes it more of a visual barrier. Choose based on your use case — subtle branding can be low opacity, while confidential markings should be more visible.
Both formats have their strengths. Text watermarks are quick to create, easy to customize, and universally readable. Image watermarks — like a company logo — look more professional and are harder to replicate. PDFly supports both, and you can combine them: add a text watermark for the message and an image watermark for branding.
If you have a PDF with a watermark you need removed — for example, a document you authored that was watermarked by mistake — check out the Remove Watermark tool. It can strip watermarks that were added through standard PDF tools. Note that watermarks baked into the page content (not added as a layer) may require additional steps.
As with all PDFly tools, watermarking happens entirely in your browser. Your document is never uploaded to a server, so sensitive content stays on your machine from start to finish.
Head over to the Add Watermark tool and protect your documents in seconds. No sign-up, no watermarks on your output — just fast, private watermarking that works every time.
