When you visit YouTube and hit play on a video, the video player offers Small, Medium, and Large size options. You can select either the small or large player, or go full-screen. With the Youtube Resize extension for Chrome or Firefox, you can drag to resize the video player to any size you'd like. It's helpful if you have a particular video player size preference for your particular display that falls outside of YouTube's three options.
You'll notice that with the extension enabled, when you mouse over YouTube's video player, the cursor turns into a … Read more