To watermark a PDF, upload it, type the text you want stamped across the pages — DRAFT or CONFIDENTIAL, for instance — then set size, colour, rotation and opacity before applying it. Around 20–30% opacity stays clearly visible while leaving the text underneath readable.
Last updated 2026-07-30
Overlay text such as DRAFT, CONFIDENTIAL or your company name across every page. Control opacity, angle, size and placement so the mark is visible without obscuring the content.
How to use Add a Watermark to a PDF
Upload the PDF — Drop in the document you want to mark.
Enter your watermark text — Type the wording and set font size, colour, rotation and opacity.
Position it — Place the watermark centrally or in a corner and check it against the live preview.
Apply and download — Stamp every page and save the watermarked PDF.
Frequently asked questions
Can the watermark be removed?
It is drawn into the page content, so it cannot be toggled off in a normal viewer. It is a deterrent, not encryption — treat it as a visible ownership marker rather than a security control.
What opacity should I use?
Around 20–30% is usually right: clearly visible, but still easy to read the text underneath.
Are my files uploaded to a server?
No. Every conversion runs inside your own browser using JavaScript and WebAssembly. Your files never leave your device, which means there is nothing for us to store, read, or leak.
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