Add Watermark

Stamp a text watermark across every PDF page

Add a semi-transparent diagonal text watermark like "Draft," "Confidential," or your company name across every page of a PDF. Type your text and adjust the opacity slider from 5% to 60% until it looks right. Watermarks are often used to mark internal documents, protect intellectual property, or brand a document before sharing externally. The watermark becomes part of the PDF content and is visible when printed or viewed.

When to watermark a PDF

• Sending a draft proposal to a client. A "Draft" watermark across all pages prevents it from being treated as final.
• Sharing a research report or a whitepaper with a "Confidential" mark to limit distribution.
• Marking internal copies of a document before circulating them, so it's clear the source and status of the file at a glance.

Tip: Keep the watermark subtle enough not to obscure the text. A 10-20% opacity usually works. Test with a low opacity first, then increase it if you want the watermark more visible.

Frequently Asked Questions

Can I remove a watermark later?

Once applied and saved, the watermark is part of the PDF. It's not easy to remove without specialised software. Keep an unwatermarked original.

Can I use my own logo instead of text?

Not currently — this tool applies a text watermark only. For a logo or image watermark, you'd need PDF editing software that supports image overlays.

Is my PDF uploaded to a server to add the watermark?

No, the watermark is applied entirely in your browser using JavaScript. The file never leaves your device, so it's safe for confidential documents.

Can I change the watermark's color or angle?

Not in this version — the watermark is applied in a fixed gray color at a 45-degree angle across the page. You can control the text and opacity.

Is this watermark tool free to use?

Yes, it's completely free with no sign-up or file limits, and it works directly in your browser.