100% private
Your images never leave your computer. No upload, no server.
Batch watermark your photos. In seconds.
Drop your photos, add your logo, download. Everything happens in your browser — your images never leave your computer.
Try for free Free to start · Pro at €9/month
A tool to boost your daily life.
Your photos
Drop all your photos into Stamp.Ninja at once.
Your logo
Add your logo, pick position and size. Your settings are saved for next time.
Download all
Get your watermarked, optimized photos in one click — as a ZIP.
Why Stamp.Ninja?
-
-
Settings remembered
Position, size, logo: everything is saved between sessions.
-
Batch processing
100 photos watermarked in seconds, no manual work.
Choose your plan
| Free | Pro — €9/month | |
|---|---|---|
| Photos per batch | Up to 3 | Unlimited |
| Batch processing | ✓ | ✓ |
| Logo position | 4 corners | 9 positions |
| Logo size | M only | S, M, L, XL |
| Settings remembered | ✓ | ✓ |
| Stamp.Ninja branding on your photos | None | None |
Pro subscription managed via a magic link sent by email — no account, no password. Cancel anytime.
Made for people who ship photos every day
If your images go online, they should carry your name.
Photographers
Protect your shots before sharing previews with clients or posting online.
E-commerce sellers
Brand a full product catalog in one go, ready for your store and marketplaces.
Real estate agents
Stamp every listing photo so your brand travels with your properties.
Content creators
Keep your logo on every visual you publish on social media, without slowing down.