720p: Resize! is a Chrome extension developed by Nimja. It falls under the category of Browsers and is classified as an Add-ons & Tools subcategory. This free extension allows users to resize the window to 720p, making it ideal for using ChromeCast without any black bars on the TV screen.

The main feature of 720p: Resize! is its ability to force the inside of the tab to be 720p, ensuring an optimal viewing experience on the TV. This extension can also be used for various other purposes. It is worth noting that the extension requires no permissions and cannot read users' tabs. The code of the extension is easy to read and clean.

In addition to resizing to 720p, 720p: Resize! also allows users to input any resolution they desire. The extension includes a few basic resolutions for convenience. With its simple and user-friendly interface, this Chrome extension provides a hassle-free way to resize windows for a better viewing experience.