=== Last-Modified and If-Modified-Since Headers === Contributors: zubovd Tags: Last-Modified,If-Modified-Since, headers Requires at least: 5.2.4 Tested up to: 5.7.1 Requires PHP: 5.3+ Stable tag: 1.0 License: GPLv2 or later License URI: http://www.gnu.org/licenses/gpl-2.0.html Add Last-Modified anв support If-Modified-Since Headers == Description == This plugin adds the 'Last-Modified' header to each post and returns the '304 Not Modified' header to the client without a body in the response if he sent the 'If-Modified-Since' header and the post has not changed since that date. == Installation == 1. Upload 'Last-Modified and If-Modified-Since Headers' folder to the 'plugins' directory. 2. Activate the plugin through the 'Plugins' menu in WordPress.