What is Add watermark to image?
Add watermark to image stamps your name, a line of text or your logo onto a photo, so people know where it came from. Photographers, small shops selling on Instagram or Meesho, teachers sharing notes and designers sending previews use it to brand or protect pictures before they share them.
You control the size as a percentage of the photo’s width, the opacity from faint to solid, the colour, the rotation and the position: centre, any corner, or tiled across the whole picture. A live preview updates as you go. Add several photos and the same mark is applied to each one, then download them together as a ZIP. Logos work best as a PNG with a transparent background. Everything happens in your browser, so the photos and your logo never leave your device, and MondayKit never adds a mark of its own.
When to use it
- Mark a proof as draft or confidential.
- Add a small logo to photos you publish.
- Repeat a faint watermark across the whole picture.
- Apply the same mark to a batch of images.
Tips for the best result
- Keep opacity around 30% so the photo stays readable.
- Use a transparent PNG for a logo.
- Tile the mark when a single corner stamp is easy to crop off.
Limits and privacy
The watermark is part of the downloaded picture. Someone can still crop or edit it later, so it is not a security lock. JPG, PNG and WebP stay in that format. Processing happens entirely in your browser, so your data never leaves your device and there is nothing to sign up for. Files are processed in your browser and never uploaded.
Related tasks
Many people who use Add watermark to image also need Blur or pixelate image or Crop image, and Compress image is one click away. Every MondayKit tool works the same way – open the page, add your input, get the result – with no account, no watermark and no upload.