HTTP2 Server Push is a WordPress plugin designed to optimize web performance by utilizing the HTTP/2 protocol. This plugin allows WordPress sites to send prefetch headers for scripts and styles, improving load times by preemptively delivering resources to the browser. It is compatible with WordPress 4.6 and above, leveraging the native support for resource hints introduced in that version. Additionally, it provides a filter option to revert to older behavior for users on newer versions, ensuring flexibility in resource management.

The plugin aims to streamline the loading process by minimizing the traditional request/response cycle associated with web resources. While it effectively enhances the performance of enqueued scripts and styles, it does not extend its capabilities to plugins and themes that directly inject scripts into the page. Users must ensure that their web server supports HTTP/2 for optimal functionality.