Need to mark a PDF as CONFIDENTIAL, DRAFT or add your logo? Adding a watermark to a PDF takes seconds and is completely free.
1
Open Fourmeld PDF Tools
Go to fourmeld.com/pdf-tools — works on any browser, no login needed.
2
Upload your PDF
Click Upload and select your PDF file from your device.
3
Add your watermark
Type your watermark text (e.g. CONFIDENTIAL, DRAFT, your company name) or upload a logo image. Set opacity, position and size.
4
Download the result
Click the action button and download your processed PDF instantly. No watermark.
Tips
- Set opacity to 30–50% for a subtle, professional watermark
- Use diagonal placement for the most visible and tamper-proof watermark
- Image watermarks (logos) work best with transparent PNG files
Add Watermark to PDF Free — Free, No Signup
Works on desktop and mobile. No software download needed.
Try Fourmeld PDF Tools Free →FAQs
Can I add my logo as a watermark?
Yes — upload a transparent PNG logo to use as an image watermark.
Can I remove watermarks with this tool?
This tool adds watermarks. Removing watermarks from others' PDFs is not supported.
Will the watermark appear on all pages?
Yes — the watermark is applied to every page by default.