From IndieWeb

posts elsewhere is a UI section of posts permalink pages that link to POSSE copies (AKA syndication links), like on social media silos, and sometimes on commentary silos like Hacker News. This page here to document examples of such "post copies elsewhere" user interfaces and suggested markup.


See: syndication-link-use-cases

How to Markup

On links to POSSE copies inside the h-entry of the original post:

  • class=u-syndication

(stub, should be expanded to a full example)

Consider putting syndication links in the footer of your post, e.g. perhaps in a <footer> element if you’re already using <article> markup for your posts (and the <footer> would go inside that).

IndieWeb Examples

Indieweb sites where all (or most?) notes are automatically published with links to syndicated copies:

Aaron Parecki

Aaron Parecki on, e.g.


Tantek Çelik on (notes since 2013-174), e.g.

have links to their POSSE'd tweets with:

  • View on Twitter
  • View Conversation on Twitter

respectively with rel="syndication".

Tom Morris

Tom Morris on, e.g.

  • has a section:

    This post is syndicated to:

    1. Twitter
    where each of the list items links to the syndicated copy of the note on those silos, with rel="syndication".

Barnaby Walters

Barnaby Walters on, e.g.

That section is automatically generated from all the hostnames of URLs in the downstreamDuplicates list on that note (tack .json onto the end of the URL to see it ‘raw’), so on the occasions I post to facebook that domain is added too 02:41, 19 March 2013 (PDT)

  • The links to the syndicated copies have this markup on them:
    • class="u-as-downstream-duplicate u-alternate"

Ben Werdmuller

Ben Werdmüller on (since 2013-174) notes, e.g.

gRegor Morrill

gRegor Morrill on since 2014-06-25


Indieweb sites where some (a few?) notes are manually published with links to syndicated copies:

  •, e.g. blog posts / articles like has a section:


    • Twitter
    • Google+
    • Hacker News
    where each of the list items links to a syndication of the blog post title and permalink on those silos.
    • Update 2013-077: I'm considering changing the heading of this section from "Elsewhere" to "Syndication" which seems like the right use of the word in the more general sense as well - you can catch this episode also as syndicated on the following networks. - Tantek 14:51, 18 March 2013 (PDT)
    • Update 2013-099: I'm keeping "Elsewhere" for now at least on this post as it's more general, and covers all the items in the list, whereas only the first two are actually intentional syndications by the author. - Tantek 01:26, 10 April 2013 (PDT)
    • the links to the syndicated copies (Twitter, Google+) have this markup on them:
      • rel="syndication" class="u-syndication"
  • ...

Past Examples

Kyle Mahan

Kyle's site is now unfortunately a zombie site, so links have been replaced with archived versions

Kyle Mahan on (since at least 2015-08-04) notes, e.g.

Shows a simple Twitter bird icon that is linked to the tweet POSSE copy.


Some past analysis / experiments:

When linking to POSSE copies of posts, we should mark up those links so they can be automatically discovered. This is useful for linking up POSSE'd copies of comment posts.

Existing implementations on links to POSSE copies of posts:

  • uses class="u-as-downstream-duplicate u-alternate"
  • uses rel="syndication" class="u-syndication"
  • uses rel="syndication"


  • u-syndication - indicates that the destination of the link is a syndication or a syndicated copy of the source of the link. While a syndicated copy may resemble an "alternate" (i.e. rel="alternate"), there is sufficient potential for inferiority (reliability, TOS, content abbreviation) in the syndicated copy that it should be explicitly indicated. Also, "syndication" implies that the author of the post deliberately intended for their post to be copied to the syndicated destination. The converse is of course the existing rel-canonical which could be used to link from a copy of a post back to the original.
  • class=u-syndication - similar semantic, but scoped to being from the immediately enclosing h-entry rather than the page, and thus can be present in more contexts than the rel value. It makes sense to use both on post permalink pages.

Elsewhere of this Translation

Elsewhere of this Translation - a list of links to POSSE syndicated copies of a post which is a translation of another post.

E.g. in French: "cette traduction ailleurs"


See Also