💧 Add a watermark to your photos
How it works in your browser
Your text is drawn over each photo on a canvas in the browser, using the position, size, colour and opacity you set. A whole batch is processed locally and bundled into a single zip for download - no photo is ever uploaded.
Choosing a format
A semi-transparent watermark placed in a corner stays readable without hiding the picture; a larger, more opaque mark across the centre is harder to crop out. Choose based on whether you are signing your work or actively deterring reuse.
Example
For example, a photographer can drop fifty proofs, type a studio name once at 40% opacity in the bottom-right, apply, and get one zip of fifty stamped images.
How to add watermark
- Drop one or more photos.
- Type your watermark text and adjust position, size and opacity.
- Apply and download all as a zip.
FAQ
Are my images uploaded to a server?
No. Every operation runs entirely inside your browser using WebAssembly and on-device models. Your files never leave your device and are never sent anywhere. You can even disconnect from the internet after the page loads.
Can I watermark many photos at once?
Yes. Drop a batch, set the watermark once, and download every stamped image together in a single zip file.