rosa.ly is a web service which lets you easily save your favorite images found on the web. There are two simple ways to save images with rosa.ly. If you are using Firefox, then you can install a simple Firefox extension. Once installed, right click on an image you like in a web page and choose ‘Save Image to rosa.ly’. A pop-up window will appear wherein you can add optional details like title, description and tags which help you organize and find images easily.
rosa.ly also provides you with a bookmarklet. You can just drag the button to your bookmarks toolbar and save images to your rosa.ly account. It currently supports JPEG, GIF and PNG formats. It provides you with 100 MB of space with no limits on the file size.