Taking a screenshot is an easy way to share what you see on your computer screen or mobile device with friends, family, colleagues, or IT support. But sometimes simply sharing what you see isn't enough; it would be nice to add notes and comments. Nimbus Screenshot is a free Google Chrome or Firefox browser extension that allows users to easily take screenshots and add annotations before sharing. Once installed, users can take full screenshots or select part of a screen to capture. Users can then add notes, arrows, and images to help explain or direct others to certain elements of interest. Nimbus Screenshot is also available as an application for Windows computers and Android devices (as "Nimbus Clipper").