FitVids for WordPress is a multimedia plugin designed to make videos responsive within WordPress sites using the FitVids jQuery library. This free plugin integrates seamlessly into the WordPress dashboard, allowing users to access its options under the Appearance menu. It supports a variety of video platforms including YouTube, Vimeo, Blip.tv, Viddler, and Kickstarter, ensuring that users can enhance the viewing experience across different devices.

The plugin provides flexibility by enabling users to apply custom jQuery selectors such as body, article, aside, and .post, allowing for tailored responsiveness for specific videos. Additionally, users can set their own selectors to include videos from any provider, expanding the functionality beyond the default options. This makes FitVids a versatile tool for WordPress users looking to optimize video content for various screen sizes.