Title: LH Add Headers Author: shawfactor Published: 2016-05-06 Last modified: 2017-05-02 --- Szukaj wtyczek ![](https://ps.w.org/lh-add-headers/assets/banner-772x250.jpg?rev=1411420) Wtyczka **nie została przetestowana z trzema ostatnimi głównymi wydaniami WordPressa**. Może nie być już utrzymywana lub obsługiwana, co może skutkować problemem ze zgodnością z nowszymi wersjami WordPressa. ![](https://ps.w.org/lh-add-headers/assets/icon-128x128.png?rev=1411420) # LH Add Headers Autor: [shawfactor](https://profiles.wordpress.org/shawfactor/) [Pobierz](https://downloads.wordpress.org/plugin/lh-add-headers.zip) * [Szczegóły](https://pl.wordpress.org/plugins/lh-add-headers/#description) * [Recenzje](https://pl.wordpress.org/plugins/lh-add-headers/#reviews) * [Instalacja](https://pl.wordpress.org/plugins/lh-add-headers/#installation) * [Rozwój](https://pl.wordpress.org/plugins/lh-add-headers/#developers) [Wsparcie](https://wordpress.org/support/plugin/lh-add-headers/) ## Opis A `304 Not Modified HTTP Header` tells your visitors that nothing has changed since their last visit. This is important as without this header visitors may be downloading your webpages from scratch each time, slowing down their experience and your site. Generally if you do not pass `304 Not Modified HTTP Header` through your HTTP header, crawlers will fetch your whole website and then compare the content of your site with the already indexed content to check whether anything new has been updated on your website or not. But this process consumes a lot of your server resource and bandwidth. You can know more about it [here](http://www.feedthebot.com/ifmodified.html). #### Before reading any further Before reading any further it is important to understand this plugin uses output buffering, in fact the Etag sent by this plugin is a hash of the sites buffered content. If your site uses server side caching this plugin may break the caching functionality. Therefore I suggest that you please **make sure** you have studied the FAQ, before installation and activation. ## Instalacja 1. Upload the entire `lh-add-headers` folder to the `/wp-content/plugins/` directory. 2. Activate the plugin through the 'Plugins’ menu in WordPress. That is it. ## Najczęściej zadawane pytania Installation Instructions 1. Upload the entire `lh-add-headers` folder to the `/wp-content/plugins/` directory. 2. Activate the plugin through the 'Plugins’ menu in WordPress. That is it. Will this plugin cause problem if you use server side caching? Quite possibly depending on your setup. It could prevent caching or even break your site if you are using server side caching (including Varnish). This plugin should NOT be used on hosts like WPEngine or DreamPress as it will break caching. How do I check if it is working? Install one of the the view live HTTP headers tools in your browser. Visit your website and then refresh the page. On your second visit the website should return a 304 not modified response. Are there other reason why a 304 header is not being return when I haven’t changed the content? In order to to return 304 the hash of the returned content must be the same (IE the html must be identical between requests. Unfortunately, some plugin adding dynamic and varying content to each page output returned. Try disabling each plugins to find the culprit. What are the benefits? This helps visitors and search engines. If your page or post has not been updated since the last visit, then your page will sent a `304 Not Modified Header`. On receipt of this header search engines know nothing has changed (and therefore there is no need to re crawl your site), likewise a normal visitors browser will get a 304 and will use the browser side cache of the page (thus speeding up the visitors experience). ## Recenzje Wtyczka nie ma jeszcze żadnej recenzji. ## Kontrybutorzy i deweloperzy „LH Add Headers” jest oprogramowaniem open source. Poniższe osoby miały wkład w rozwój wtyczki. Zaangażowani * [ shawfactor ](https://profiles.wordpress.org/shawfactor/) [Przetłumacz wtyczkę “LH Add Headers” na swój język.](https://translate.wordpress.org/projects/wp-plugins/lh-add-headers) ### Interesuje cię rozwój wtyczki? [Przeglądaj kod](https://plugins.trac.wordpress.org/browser/lh-add-headers/), sprawdź [repozytorium SVN](https://plugins.svn.wordpress.org/lh-add-headers/) lub czytaj [dziennik rozwoju](https://plugins.trac.wordpress.org/log/lh-add-headers/) przez [RSS](https://plugins.trac.wordpress.org/log/lh-add-headers/?limit=100&mode=stop_on_copy&format=rss). ## Rejestr zmian **1.00 April 15, 2016** Initial release. **1.01 May 05, 2016** Code improvement **1.02 May 19, 2016** Fixed customiser issue **1.03 June 22, 2016** Fixed documentation link **1.04 April 30, 2017** Added class check **1.05 May 10, 2017** Keep comments in outputted source ## Meta * Wersja **1.04** * Ostatnia aktualizacja **9 lat temu** * Włączone instalacje **10+** * Wersja WordPressa ** 3.1.0 lub nowszej ** * Testowano do **4.8.28** * Język * [English (US)](https://wordpress.org/plugins/lh-add-headers/) * Tagi * [cache-control](https://pl.wordpress.org/plugins/tags/cache-control/)[caching](https://pl.wordpress.org/plugins/tags/caching/) [expires](https://pl.wordpress.org/plugins/tags/expires/)[headers](https://pl.wordpress.org/plugins/tags/headers/) [last-modified](https://pl.wordpress.org/plugins/tags/last-modified/) * [Widok zaawansowany](https://pl.wordpress.org/plugins/lh-add-headers/advanced/) ## Oceny Nie przesłano jeszcze żadnych recenzji. [Your review](https://wordpress.org/support/plugin/lh-add-headers/reviews/#new-post) [Zobacz wszystkierecenzje.](https://wordpress.org/support/plugin/lh-add-headers/reviews/) ## Zaangażowani * [ shawfactor ](https://profiles.wordpress.org/shawfactor/) ## Wsparcie Masz coś do dodania? Potrzebujesz pomocy? [Zobacz forum wsparcia](https://wordpress.org/support/plugin/lh-add-headers/) ## Złóż datek Czy chcesz wesprzeć rozwój wtyczki? [ Wspomóż wtyczkę ](https://lhero.org/portfolio/lh-add-headers/)