# Watermark PDF Online

Add text or image watermarks to any PDF without uploading files. Choose centered or tiled positioning, adjust opacity and rotation. Everything runs locally in your browser.

Live page: [https://freetoolsfr.com/watermark-pdf-online](https://freetoolsfr.com/watermark-pdf-online)

Adding a watermark to a PDF online usually means uploading your document to someone else's server. This tool is different — it runs entirely in your browser using pdf-lib. Your file stays on your device from start to finish. Add text watermarks (CONFIDENTIAL, DRAFT, your company name) or image watermarks (your logo) with full control over opacity, rotation, and positioning. Choose centered placement for a single prominent mark, or tiled for full-page coverage that can't be cropped out.

## How it works

1. **Upload Your PDF** — Select or drag and drop the PDF file you want to stamp with watermarks, page numbers, or headers.
2. **Enable & Configure** — Toggle on Watermark, Page Numbers, and/or Header & Footer. Customize text, position, opacity, and formatting for each.
3. **Download Stamped PDF** — All enabled stamps are applied in a single pass. Download your stamped PDF instantly.

## Use cases

- **Proof Review**: Watermark design proofs with your studio logo before sending to clients for approval. Prevents unauthorized use of unpaid work.
- **Internal Distribution**: Mark salary documents and performance reviews as CONFIDENTIAL before distributing to managers.

## Tips

- **PNG Logos Work Best**: Use PNG format for logo watermarks — it supports transparency, so only the logo appears without a white background box.
- **Diagonal Text Stands Out**: The classic -45 degree rotation creates a diagonal watermark that's visible without being distracting. It's the industry standard for document marking.

## FAQ

### Can I use my company logo as a watermark?

Yes. Switch to 'Image' mode and upload your logo in PNG or JPG format. PNG recommended for transparent backgrounds.

### What's the difference between Center and Tile?

Center places one watermark in the middle of each page. Tile repeats the watermark across the entire page for full coverage.

## Problems solved

- Add watermarks to PDFs without uploading files to cloud services
- Protect documents with tiled watermarks that can't be cropped out
- Mark confidential documents before distribution
- Brand PDFs with company logos for professional presentation

## Stats

- **2** Watermark Types (Text + Image)
- **2** Layout Modes (Center + Tile)
- **0 bytes** Uploaded to Servers
- **< 5 sec** Average Processing Time

## Tool

This page is powered by the [page-stamper](https://freetoolsfr.com/pdf/page-stamper) tool.

## Related

- [pdf-watermark-free](https://freetoolsfr.com/pdf-watermark-free)
- [add-page-numbers-to-pdf](https://freetoolsfr.com/add-page-numbers-to-pdf)
- [pdf-header-footer](https://freetoolsfr.com/pdf-header-footer)
- [stamp-pdf-online](https://freetoolsfr.com/stamp-pdf-online)

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Source: https://freetoolsfr.com/watermark-pdf-online
Site: https://freetoolsfr.com