Fullscreen Anything Maximizes Images, Videos and Games in Chrome
Chrome: YouTube makes it easy to watch videos in full screen mode with a tap of the F key, but if you want this functionality across your browser, then Fullscreen Anything does the job just as well.
The Chrome extension works with images, videos and Flash games to maximize any content. It won't work on Chrome apps, but there's a workaround for that. For images, sites like Imgur worked perfectly, but for other web pages, you might have to open an image in a new tab before getting it to work. Videos were solid across different websites, including some proprietary players. You can hit the Ctrl+Space combo to maximize the content or click the Fullscreen Anything icon in your toolbar.