# Watermark PDF for small businesses

_Updated July 2026 · Arthize · https://arthize.com/for/small-businesses/watermark-pdf_

Arthize lets small business owners and teams add a watermark to a PDF in a private workspace — free, with no watermark. Adding a watermark stamps text or an image — like DRAFT or CONFIDENTIAL — across every page at the opacity and angle you choose.

## Why small businesses add a watermark to a PDF

A small business merges the month's receipts into one file, converts a proposal to PDF for a client, and password-protects a sensitive contract before emailing it — on a free plan with no per-seat cost.

**Built for invoices.** Whether it's invoices, contracts, receipts, Arthize's watermark pdf keeps the work inside your private workspace. A small business's financial and client documents are confidential and shouldn't be retained by a free ad-funded tool.

## What matters when you add a watermark to a PDF

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

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

### How do small businesses add a watermark to a PDF for free?

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 the file is deleted after the job — which is why small business owners and teams can use it for invoices without a confidentiality risk.

### Is it private to add a watermark to a PDF sensitive invoices?

Yes. A small business's financial and client documents are confidential and shouldn't be retained by a free ad-funded tool. Files are processed inside your private Arthize workspace and deleted after the job.

### 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.