About the Watermark PDF
Mark documents as CONFIDENTIAL, DRAFT, COPY or SAMPLE, or stamp your company name across every page. Choose the text, colour, opacity, font size and rotation, and download the watermarked PDF.
How to Use the Watermark PDF
- Click the upload box and choose your file, or simply drag and drop it in.
- Adjust the available options to match what you need.
- Click the action button and let House of Convert do the work in seconds.
- Download your result instantly — no email, no account, no watermark.
Why Use the Watermark PDF at House of Convert?
- Free forever — every tool on this site is free to use, with no hidden limits.
- Private by design — your file is processed for this request only and never stored on our servers.
- Fast — results are usually ready in a few seconds, even for larger files.
- No installation — works entirely in your browser, on desktop or mobile.
Frequently Asked Questions
How do I add a watermark to a PDF?
Upload the PDF, type the watermark text, choose colour, opacity, size and angle, then click Apply.
Is the watermark added to every page?
Yes, it’s stamped across every page.
How do I make the watermark transparent?
Lower the opacity to around 0.2–0.4.
How do I make a diagonal watermark?
Keep the rotation at 45 degrees (the default).
Can I add a logo watermark to a PDF?
This tool adds text watermarks.
Can a PDF watermark be removed?
A determined user with editing software may remove it; flatten the PDF afterwards to make that harder.
Does the watermark cover the text?
It sits on top but semi-transparently, so the content remains readable.
How do I watermark a PDF without Acrobat?
Use this free tool in your browser.
Does the Watermark PDF tool work on iPhone and Android?
Yes.
Does the Watermark PDF tool store my PDF?
No, it’s deleted immediately.