# Watermark PDF: Arthize vs Soda PDF

_Updated July 2026 · Arthize · https://arthize.com/vs/soda-pdf/watermark-pdf_

To add a watermark to a PDF, Arthize offers a free, private watermark pdf with no watermark — a focused alternative to Soda PDF. Adding a watermark stamps text or an image — like DRAFT or CONFIDENTIAL — across every page at the opacity and angle you choose.

## Arthize's watermark pdf vs Soda PDF

Soda PDF is a PDF suite with online and desktop editions. Soda PDF sells online and desktop editions on a subscription model.

**Arthize's approach:** Adding a watermark stamps text or an image — like DRAFT or CONFIDENTIAL — across every page at the opacity and angle you choose.

- Transparent pricing: free forever, Pro from $6/mo or $48/yr, and a one-time $149 lifetime option.
- Files are processed inside your private Arthize workspace and deleted after the job — never sold or used to train models.
- 50+ tools live in one workspace, so you don't jump between single-purpose pages.
- No subscription needed for core tools.

## How to add a watermark to a PDF with Arthize

A watermark can be text or an image applied across every page.

Opacity and angle control how prominent the mark is.

Watermarks are useful for marking drafts and confidential copies.

## How to add a watermark to a PDF with Arthize

1. **Open the watermark tool** — Sign in and open the Watermark tool.
2. **Add your PDF** — Upload the document to stamp.
3. **Design the watermark** — Set the text or image, opacity, angle and position.
4. **Download** — Get a watermarked PDF.

## FAQ

### Is Arthize a good Soda PDF alternative to add a watermark to a PDF?

Yes. Adding a watermark stamps text or an image — like DRAFT or CONFIDENTIAL — across every page at the opacity and angle you choose. Arthize does it free with no watermark and deletes the file after the job. Soda PDF offers a broad feature set for teams that want a full desktop suite.

### How do I add a watermark to a PDF?

Adding a watermark stamps text or an image — like DRAFT or CONFIDENTIAL — across every page at the opacity and angle you choose. On Arthize it's free with no watermark and processed privately.

### Can I add a CONFIDENTIAL stamp to every page?

Adding a watermark stamps text or an image — like DRAFT or CONFIDENTIAL — across every page at the opacity and angle you choose. On Arthize it's free with no watermark and processed privately.