Syndication Links


It supports adding rel-syndication/u-syndication links to your posts, pages, and comments, indicating where a syndicated copy is. You can do this manually and some plugins support
automatically adding their links as well.


Settings for the Syndication Links plugin can be found in the main WordPress “Settings” tab in the
admin dashboard, or if the Indieweb plugin is installed, under the Indieweb tab. The options provided allow for various ways of presenting the syndication links in posts. Syndication Links by default will add links to the content. You can remove this in your plugin if you wish to call the display function directly.

The settings include the following options as follows with either a set of buttons, a check box (with a check indicating that the feature is “on”) or an optional text field:

  • Display Text – Offers options to display text only, icons only, icons and text, and no display(hidden icons).
  • Size – Choice of small, medium, or large size icons.
  • Black Icons – Checking the box defaults to a “black” social media icon set.
  • Show on Front Page, Archive Page, and Search Results – If checked the icons will show on pages other than a single view. If not checked, the icons will be hidden by the links will remain.
  • Show on Feed – If checked the icons will show in your RSS feed as well
  • Text Before Links – This is the text that appears before the Display Text/Icons (as indicated above). The default text is “Syndicated to:” but can be modified if desired.

Note: The particular CSS of your theme may change the display and output of the text and some of the icons.

Supported POSSE plugins and implementations

The plugin supports automatically pulling data from plugins that syndicate your content so you don’t need to do it manually. For anything not built in, integation is easy with a simple filter for potential use with any other plugin.


In no particular order…

  1. The Indieweb community of users and all users of this plugin
  2. Meitar Moscovitz for fixes and code contributions related to support of the plugin in his various plugins.
  3. Justin Tadlock for the initial Social Icons design.
  4. Jihaisse and Peter Molnar for the SNAP, courtesy of WordPress Syndication
  5. Simple-Icons for their icon packs for logos. Simple Icons is licensed under CC0 v1.0 Universal.
  6. Genericons Neue for their generic icon packs. Genericons Neue is licensed under the GPLv2.
  7. Chris Aldrich for many suggestions on improving the display and for screenshots.
  8. PHPCS is used with the WordPress and PHP Compatibility Standards in order to ensure compatibility with supported versions of PHP and enact WordPress Coding Standards.
  9. Travis-CI is used to actively test against various PHP versions


  • Example of Syndication Links metabox with links filled in
  • Example of output display on website


  1. Upload the folder ‘syndication-links’ to the ‘/wp-content/plugins/’ directory
  2. Activate the plugin through the ‘Plugins’ menu in WordPress


Installation Instructions
  1. Upload the folder ‘syndication-links’ to the ‘/wp-content/plugins/’ directory
  2. Activate the plugin through the ‘Plugins’ menu in WordPress
How do I prevent the links from being automatically added to the content?

You will have to remove the content filter remove_filter( 'the_content', array( 'Syn_Config', 'the_content' ) , 30 ) and then you can call get_syndication_links() directly in your theme.

  • get_syndication_links( $object, $args ) - Returns the HTML for $object. $object can be a post_ID, a WP_Post object, or a WP_Comment object.
    ** $args
    style- Defaults to ul
    text- Display text, defaults to settings option
    icons- Display icons, defaults to settings option
    container-css- Class to wrap entire syndication links in
    single-css- Class to wrap a single link in
    text-css` – Class to wrap the text before the links in
How can I look up the original if I have a syndication link?

If you add ?original-of= and the URL-encoded URL it will return the post that has that URL stored. As no two posts should have the same two syndication links it will by default only return the first.

What filters are available to modify output?
  • syn_rewrite_secure( $domains ) – $domains is an array of domain names to rewrite to https if found
  • syn_metabox_types( $screens ) – $screens would be an array of post types to add the Syndication Link metabox to.
  • syn_network_strings( $strings ) – $strings is an array of descriptive text strings by domain name
  • syn_add_links( $urls, $post_ID ) – $urls is an array of retrieved links from $post_ID
  • syn_links_display_defaults( $defaults ) – Filter the defaults for displaying Syndication Links


Works as stated

NOTE: Documentation needs some work.

Social plugin no longer exists and WordPress Crossposter has not been updated in a while and has not been tested on current versions of WordPress.

Get on board

This plugin is not perfect but is very useful and a great way of getting involved in the indieweb.

An awesome way to display links to copies of posts

Almost everyone uses social media to publicize their WordPress posts. This is a dead-simple (and awesome) way to allow your WordPress installation to visually display where those copies of your posts went.

The fact that it integrates with some social tools (like Social Network Auto-Poster to automatically pull in those links) is even better.

Read all 3 reviews

Contributors & Developers

“Syndication Links” is open source software. The following people have contributed to this plugin.


Translate “Syndication Links” into your language.

Interested in development?

Browse the code, check out the SVN repository, or subscribe to the development log by RSS.


= Version 3.3.2 ( 2018-02-03 )
* Updated Simple Icons to latest version

= Version 3.3.1 ( 2018-01-04 )
* Updated Simple Icons to latest version
* Support for pulling data out for SNAP out of Post Meta without dependence on SNAP classes

= Version 3.3.0 ( 2017-12-?? )
* Switched to Simple Icons as larger, updated, and maintained more frequently than Automattic’s Social Icons repo
* Added in the Genericon Neue pack for when there is no logo for a site with a series of generic icons
* SVG Sprite only will be distributed instead of individual SVG files
* Icon colors automatically generated from Simple Icons repository
* Icon names automatically generated from Simple Icon repository
* New code to try and find an icon without hard coding the domain to icon relationship by trying to find the icon name inside the domain string.
* Development tools now configured for bringing in PHPCS Coding Standards and generating new files
* Screenshots!
* License information included for the plugin as well as dependencies
* Again, automation automation automation

= Version 3.2.4 ( 2017-11-23 )
* Changelog will now note a release date
* Added/redid colors for many links

Version 3.2.3

  • Remove Social Support as Plugin is no longer listed in WordPress repository
  • Add additional syndication icons
  • Fix textdomain issues
  • Add PHP Compatibility tests and textdomain tests
  • PHPCS Improvements
  • Add setting for disabling links in feed

Version 3.2.2

  • Remove H-Card Widget

Version 3.2.1

  • Break add get_syndication_links function into smaller pieces ( props @Ruxton )
  • Adds get_syndication_links_elements which returns array of anchor tags
  • Adds get_syndication_links_display_defaults to return default options
  • Adds get_syndication_links_text_before to return textbefore on it’s own

Version 3.2.0

  • Add support for comment syndication links
  • Add CSS for styling text before

Version 3.1.1

  • Fix documentation re priority of content filter
  • Remove empty check as interfering with filter
  • Add uniqueness check after filter

Version 3.1.0

  • Cleanup of settings attributes using enhancements available in WordPress 4.7
  • Individual SVG icons and code to generate an SVG sprite now included in the plugin
  • Option to have hidden links now available
  • Small Medium and Large CSS files are included by option – generated by sass
  • Option to disable links being added to content removed as they can now be hidden. Any theme that wants to call the display function directly will have to remove the content filter
  • Add arguments to get_syndication_links to allow for customized presentation
  • Adding ?original-of=url with url being the syndication URL will return the original entry.

Version 3.0.5

  • Change storage of syndication links in order to match Micropub plugin. Storage is now array
  • Remove old property once migrated to new
  • Remove JSON REST filter as deprecated
  • Add support for the official Medium plugin per request @chrisaldrich

Version 3.0.4

  • Compatibility update
  • Add textdomain for language support

Version 3.0.2

* Adjust close bracket

Version 3.0.1

* Fix text display issue

Version 3.0.0

* Remove icon fonts in favor of SVG
* Remove rel-me support to move to implementation in Indieweb plugin
* Remove h-card support to move to implementation in Indieweb plugin (it wasn't very good anyway)
* Introduce new get_syndication_data function to abstract out storage

Version 2.1.0

* Removed user meta code

Version 2.0.3

* Minor Tweaks and Cleanup

Version 2.0.2

* CSS fixes
* Version number added to CSS import to avoid caching on update

Version 2.0.1

* Misc. Bug Fixes
* Bridgy Publish Support removed - new Bridgy plugin will handle that

Version 2.0.0

* Rewritten to remove global scoping
* Option to add URLs to the head of the home page for rel-me auth
* Option to add URLs as a widget for rel-me auth

Version 1.0.3

* Security Fix. Nothing new

Version 1.0.2

* Refinements
* Add support for pages and a filter to add additional content types

Version 1.0.0

* Refinements
* Addition of h-card widget. 
* Improvements to hooks
* Addition of automatic information from SNAP and Social(courtesy WordPress Syndication). 
* Now supports second font choice and choice of color or black.

Version 0.6.0

* Add hooks and functions to allow additional urls to  be added

Version 0.5.0

* Clean up the plugin for initial release to WordPress repository.

Version 0.5

* Moved to simplified data structure. 
* Hidden migration function

Version 0.4

* Rewriting using Grunt/SASS for more flexibility

Version 0.3

* Customizable Networks finished. 
* Changed social icons CSS to automatically add only if the class for the list has social-icon in it.

Version 0.2

* Settings Screen rewritten using WordPress Settings API. 
* Going to rewrite with customizable networks and thus option to disable sites you do not syndicate to. 
* Added social icons CSS to automatically add icons to anything in a <LI>

Version 0.1

* Forked from the Semantic Comments plugin. Start of configurable options.