=== If-Modified-Since === Contributors: ezraverheijen Donate link: http://bit.ly/1eC8iDE Tags: if modified since, If Modified Since, If-Modified-Since, seo, SEO, search engine optimization, google, bing, yahoo Requires at least: 3.5 Tested up to: 4.7.3 Stable tag: 1.0 License: GPL v3 or later License URI: http://www.gnu.org/licenses/gpl-3.0.html Comply with Webmaster Guidelines, save some bandwith and reduce server load with the If-Modified-Since header. == Description == If-Modified-Since tells search engine spiders one of two things about a webpage: * This webpage has not changed, no need to download again. * This webpage has changed so download again because there is new information. If the requested page has not been modified since the time specified by a search engine spider, a 304 (not modified) response will be returned without any message-body. If you have any issues using If-Modified-Since, find a bug or have an idea to make the plugin even better then please [help to improve If-Modified-Since](https://github.com/ezraverheijen/wp-if-modified-since). If you don’t report it, I can’t fix it! == Installation == 1. Upload the `if-modified-since` folder to the `/wp-content/plugins/` directory 1. Activate the plugin through the 'Plugins' menu in WordPress 1. No need to configure, it just works! == Frequently Asked Questions == = Do I need this when I already use a caching plugin like W3 Total Cache? = Some plugins like W3TC support the If-Modified-Since HTTP header, so there's no need to install this plugin. = How do I know if the plugin works after installing? = You can test If-Modified-Since [here](https://www.hscripts.com/tools/if-modified-since/) == Screenshots == == Changelog == = 1.0 = * Stable release * Enhancements: * Removed PHP < 5.4 legacy code * Added prevention for class name collision * Modified the plugin to only output a Last-Modified header if the response is not 304 = 0.9 = * Beta release
overdigo/wp-if-modified-since
WordPress plugin to handle the `If Modified Since` header functionality.
PHPGPL-3.0