Add Watermark to Photos
Protect your images with a text or logo watermark — positioned exactly how you want.
How to add watermark in 3 steps
- 1
Upload your photo
Drop the image you want to protect into the box.
- 2
Type your watermark
Enter text (or upload a logo), then set position, size and opacity.
- 3
Apply & download
The watermark is burned in locally — download the protected image.
Why use Kotopig?
Your files stay private
Images are processed on your device and never uploaded to any server.
Instant results
No upload or download queue — processing starts the moment you drop a file.
Free, no sign-up
No account, no watermarks on output, no per-day limits. Just open and use.
Frequently asked questions
Are my images uploaded to a server?
No. Every operation runs entirely inside your browser using your device's own processor. Your files never leave your computer, so the tool works even with the page disconnected from the internet after loading.
Can I tile the watermark across the whole image?
Yes. Choose the 'tile' position to repeat your text diagonally across the photo, which is much harder to crop out.
Can I use my own logo as a watermark?
Yes, switch to image mode and upload a transparent PNG logo; you can scale and position it freely.
Will the watermark be permanent?
The watermark is rendered into the downloaded image's pixels, so it travels with the file wherever it's shared.