Add Facebook social plugins and the ability to publish new posts to a Facebook Timeline or Facebook Page. Official Facebook plugin.

Facebook

<p>The Facebook plugin for WordPress adds Facebook social plugins to your WordPress site. Associate your WordPress site with a free Facebook application identifier to enable advanced features such as automatically sharing new posts to an author&#8217;s Facebook Timeline or your site&#8217;s Facebook Page. This plugin is developed by Facebook with extra support for popular plugins and themes, custom post types, and custom post statuses.</p>
<h4>Features</h4>
<ul>
<li><a href="http://ogp.me/" rel="nofollow">Open Graph protocol</a> markup optimizes your content for social sharing and rich story previews on Facebook, Twitter, Google+, Mixi, and more. Display large images, link to author pages, and improve story distribution through social news feeds.</li>
<li><a href="http://www.facebook.com/insights" rel="nofollow">Facebook Insights</a> support for Facebook accounts associated with a Facebook application. Track rich audience data powered by Facebook profiles (age, location, language) and see how your content is shared on Facebook.</li>
<li>Add <a href="https://developers.facebook.com/docs/plugins/like-button/" rel="nofollow">Like</a>, <a href="https://developers.facebook.com/docs/plugins/send-button/" rel="nofollow">send</a>, and <a href="https://developers.facebook.com/docs/plugins/follow-button/" rel="nofollow">follow</a> buttons to every post to help your site&#8217;s readers share content with friends or stay connected to future content shared by your site and its authors on Facebook.</li>
<li><a href="https://developers.facebook.com/docs/plugins/embedded-posts/" rel="nofollow">Embed Facebook Posts</a> by pasting a URL into your post composer, creating a shortcode, or calling a function from your theme.</li>
<li>Enable the <a href="https://developers.facebook.com/docs/plugins/comments/" rel="nofollow">Facebook Comments Box social plugin</a> to encourage new comments from logged-in Facebook users and his or her Facebook friends. Comments associated with a post are sorted according to social signals including friend networks, most liked, or the most active discussion threads. Advanced features include moderation, blacklisted words, automatic grammar correction, and login support for AOL, Microsoft, and Yahoo! accounts.</li>
<li><a href="https://developers.facebook.com/docs/plugins/like-box-for-pages/" rel="nofollow">Like Box</a> displays recent activity from your Facebook Page and encourages new Like actions.</li>
<li><a href="https://developers.facebook.com/docs/plugins/recommendations-bar/" rel="nofollow">Recommendations Bar</a> helps visitors discover additional content on your site by recommending posts and encouraging Like shares.</li>
<li><a href="https://developers.facebook.com/docs/plugins/recommendations/" rel="nofollow">Recommendations Box</a> suggests related posts in a configurable widget.</li>
<li>Configure your Facebook application for Open Graph action news publishing support for improved Facebook distribution of author Timeline stories and news-specific highlights.</li>
<li>Mention Facebook friends and Facebook pages in a custom message posted to your Timeline with your post.</li>
<li>Customize and extend the plugin through custom actions and filters.</li>
</ul>
<h4>Shortcodes</h4>
<p>Add a <a href="https://developers.facebook.com/docs/plugins/like-button/" rel="nofollow">Like Button</a>, <a href="https://developers.facebook.com/docs/plugins/send-button/" rel="nofollow">Send Button</a>, <a href="https://developers.facebook.com/docs/plugins/follow-button/" rel="nofollow">Follow Button</a>, or <a href="https://developers.facebook.com/docs/plugins/embedded-posts/" rel="nofollow">Embedded Posts</a> using a shortcode inside your post or evaluated from within your theme. You may override site-level options with shortcode attributes defined on the social plugin&#8217;s page.</p>
<ul>
<li><code>[facebook_like_button]</code></li>
<li><code>[facebook_send_button]</code></li>
<li><code>[facebook_follow_button href="{$facebook_profile_url}"]</code></li>
<li><code>[facebook_embedded_post href="{$facebook_post_url}"]</code></li>
</ul>
<h4>Contributing code</h4>
<p>The development <a href="https://github.com/facebook/wordpress" rel="nofollow">source code for this plugin is available on Facebook&#8217;s GitHub account</a>. <a href="https://github.com/facebook/wordpress/pulls" rel="nofollow">Pull Requests</a> and code discussion welcome.</p>
<h3>Custom actions &amp; filters</h3>
<h4>Actions</h4>
<ul>
<li><code>facebook_settings_before_header_$hook_suffix</code> &#8211; add content to a settings page before the main page header section</li>
<li><code>facebook_settings_after_header_$hook_suffix</code> &#8211; add content to a settings page after the main page header section</li>
<li><code>facebook_settings_footer_$hook_suffix</code> &#8211; add content to a settings page below the wrapper div</li>
<li><code>facebook_comment_form_before</code> &#8211; comment form <a href="https://codex.wordpress.org/Function_Reference/comment_form#Pluggable_actions" title="WordPress comment form pluggable action" rel="nofollow">pluggable action</a> replacing the WordPress <code>comment_form()</code> equivalent action <code>comment_form_before</code></li>
<li><code>facebook_comment_form_after</code> &#8211; comment form <a href="https://codex.wordpress.org/Function_Reference/comment_form#Pluggable_actions" title="WordPress comment form pluggable action" rel="nofollow">pluggable action</a> replacing the WordPress <code>comment_form()</code> equivalent action <code>comment_form_after</code></li>
</ul>
<h4>Filters</h4>
<ul>
<li><code>facebook_features</code> &#8211; limit the plugin features available on your site</li>
<li><code>facebook_jssdk_init_options</code> &#8211; customize arguments sent to the <a href="https://developers.facebook.com/docs/reference/javascript/FB.init/" rel="nofollow">FB.init</a> function of the Facebook JavaScript SDK</li>
<li><code>facebook_jssdk_init_extras</code> &#8211; add extra JavaScript to the <code>fbAsyncInit</code> JavaScript function called after the Facebook JavaScript SDK is loaded</li>
<li><code>facebook_content_filter_priority</code> &#8211; choose the priority of Facebook social plugin filters attached to <code>the_content</code> filter. Affects where Facebook content is output on your page relative to other plugins attached to <code>the_content</code></li>
<li><code>fb_locale</code> &#8211; directly define your site locale based on the list of <a href="https://developers.facebook.com/docs/internationalization/" rel="nofollow">Facebook locale mappings</a></li>
<li><code>facebook_excerpt_length</code> &#8211; choose a custom length, in words, of a post excerpt generated for use in the Open Graph protocol description. default: 55</li>
<li><code>facebook_excerpt_more</code> &#8211; string appearing at the end of a truncated excerpt string. default: &#8220;&hellip;&#8221;</li>
<li><code>fb_rel_canonical</code> &#8211; customize the canonical URL used by Facebook for a post. Affects Open Graph protocol URL definitions, URL references sent in Open Graph actions, and more. default: result of <code>get_permalink()</code></li>
<li><code>facebook_comment_schema_org</code> &#8211; override output of search engine friendly comments content using <a href="http://googlewebmastercentral.blogspot.com/2011/06/introducing-schemaorg-search-engines.html" rel="nofollow">Schema.org microdata markup</a></li>
<li><code>facebook_comments_number_more</code> &#8211; override the default &#8220;% Comments&#8221; text used to generate a client-side comments number. similar to WordPress&#8217; <a href="https://codex.wordpress.org/Function_Reference/comments_number" rel="nofollow">comments_number</a> more parameter</li>
<li><code>facebook_og_type</code> &#8211; set an Open Graph object type for a specific post early in the Open Graph process. Affects Open Graph protocol properties built with the page and later passed to <code>fb_meta_tags</code>. Affects Open Graph action publishing: only an <a href="https://developers.facebook.com/docs/reference/opengraph/object-type/article" title="Facebook Open Graph object: article" rel="nofollow">article</a> may be published to a Facebook Timeline using the <a href="https://developers.facebook.com/docs/reference/opengraph/action-type/news.publishes" title="Facebook Open Graph action: news.publishes" rel="nofollow">news.publishes action</a></li>
<li><code>fb_meta_tags</code> &#8211; Customize Open Graph protocol markup before it is output to the page</li>
<li><code>facebook_ogp_prefixed</code> &#8211; true to always use prefixed properties (og:title) or false to use full IRI properties (http://ogp.me/ns#title)</li>
<li><code>facebook_rdfa_mappings</code> &#8211; array of RDFa references with desired prefix. Used to remap Open Graph protocol properties from a full IRI to a prefix</li>
<li><code>facebook_wp_comments_title</code> &#8211; set a custom title for the Facebook comments template</li>
<li><code>facebook_wp_list_comments</code> &#8211; customize the arguments sent to <code>wp_list_comments</code> for display of WordPress comments inside the Facebook comments template</li>
<li><code>facebook_comments_wrapper</code> &#8211; override the display of Facebook comments fetched from Facebook servers for display on the page. default: noscript. set to an empty string to prevent fetch and inclusion</li>
<li><code>fb_get_user_meta</code> &#8211; fetch a user meta value by attaching to this filter, bypassing the WordPress user meta API</li>
<li><code>fb_update_user_meta</code> &#8211; update a user meta value by attaching to this filter, bypassing the WordPress user meta API</li>
<li><code>fb_delete_user_meta</code> &#8211; delete a user meta value by attaching to this filter, bypassing the WordPress user meta API</li>
</ul>


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