This app lets you to add custom watermark (image or text) to your images, photos for free.
You can add text, logo-image watermark to photos for free without installing any software. It is useful when you need to protect your copyrights.

You can select multiple files and create watermark images instantly, real-time in your browser. No file uploading to the server. 
You can select image files (JPG, PNG) to watermark from your local computer and from Google Drive directly.