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Watermark PDF for startups
Updated July 2026
Arthize lets startup founders 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 startups add a watermark to a PDF
A founder exports the pitch deck to PDF, merges it with financials into a data-room file, and sends a SAFE for e-signature — without paying for enterprise document software.
Built for pitch decks. Whether it's pitch decks, cap tables, contracts, Arthize's watermark pdf keeps the work inside your private workspace. Fundraising materials and cap tables are highly confidential; private processing is critical.
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.
Common questions
- How do startups 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 startup founders and teams can use it for pitch decks without a confidentiality risk.
- Is it private to add a watermark to a PDF sensitive pitch decks?
- Yes. Fundraising materials and cap tables are highly confidential; private processing is critical. 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.
Related
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