In order to provide you with new, powerful features as soon as possible, we may release some features in Beta status.
These features may not always work, and may not work in all browsers, but we've deemed them useful enough where they do work that they're still worth including.
Make sure to keep your browser up to date, since they fix bugs and security holes and add missing features all the time.
Most browsers support the ability to paste images into web apps via the Clipboard APIs, but there may still be some stragglers.