This is BETA software, see the FAQ to see the current feature set or rather what is still planned.

The plugin implements the ActivityPub protocol for your blog, which means that your readers will be able to follow your blog posts on Mastodon and other federated platforms that support ActivityPub. In addition, replies to your posts on Mastodon and related platforms will automatically become comments on your blog post.

The plugin works with the following tested federated platforms, but there may be more that it works with as well:

Here’s what that means and what you can expect.

Once the ActivityPub plugin is installed, each author’s page on your WordPress blog will become its own federated instance. In other words, if you have two authors, Jane and Bob, on your website,, then your authors would have their own author pages at and Each of those author pages would now be available to Mastodon users (and all other federated platform users) as a profile that can be followed. Let’s break that down further. Let’s say you have a friend on Mastodon who tells you to follow them and they give you their profile name You search for her name, see her profile, and click the follow button, right? From then on, everything Jane posts on her profile shows up in your Home feed. Okay, similarly, now that Jane has installed the ActivityPub plugin on her site, her friends can also follow her on Mastodon by searching for and clicking the Follow button on that profile.

From now on, every blog post Jane publishes on will show up on your Home feed because you follow her profile.
Of course, if no one follows your author instance, then no one will ever see the posts – including you! So the easiest way to even know if the plugin is working is to follow your new profile yourself. If you already have a Mastodon profile, just follow your new one from there.

Some things to note:

  1. Many single-author blogs have chosen to turn off or redirect their author profile pages, usually via an SEO plugin like Yoast or Rank Math. This is usually done to avoid duplicate content with your blog’s home page. If your author page has been deactivated in this way, then ActivityPub won’t work for you. Instead, you can turn your author profile page back on, and then use the option in your SEO plugin to noindex the author page. This will enable the page to be live and ActivityPub will now work, but the live page won’t cause any duplicate content issues with search engines.
  2. Once ActivityPub is installed, only new posts going forward will be available in the fediverse. Likewise, even if you’ve been using ActivityPub for a while, anyone who follows your site, will only see new posts you publish from that moment on. They will never see previously-published posts in their Home feed. This process is very similar to subscribing to a newsletter. If you subscribe to a newsletter, you will only receive future emails, but not the old archived ones. With ActivityPub, if someone follows your site, they will only receive new blog posts you publish from then on.

So what’s the process?

  1. Install the ActivityPub plugin.
  2. Go to the plugin’s settings page and adjust the settings to your liking. Click the Save button when ready.
  3. Make sure your blog’s author profile page is active.
  4. Go to Mastodon or any other federated platform, search for your author’s new federated profile, and follow it. Your new profile will be in the form of, so that is what you’ll search for.
  5. On your blog, publish a new post.
  6. From Mastodon, check to see if the new post appears in your Home feed.

Please note that it may take up to 15 minutes or so for the new post to show up in your federated feed. This is because the messages are sent to the federated platforms using a delayed cron. This avoids breaking the publishing process for those cases where users might have lots of followers. So please don’t assume that just because you didn’t see it show up right away that something is broken. Give it some time. In most cases, it will show up within a few minutes, and you’ll know everything is working as expected.


Folge den normalen Anweisungen für die WordPress-Plugin-Installation.

Automatische Plugin-Installation

So fügst du ein WordPress-Plug-in mit dem integrierten Plugin-Installer hinzu:

  1. Gehe zu Plugins > Installieren.
  2. Gib „activitypub“ in die Box Suche Plugins ein.
  3. Suche das WordPress-Plugin, das installiert werden soll.
    1. Klicke auf Details für weitere Informationen zum Plugin und Anleitungen, die du für die Einrichtung des Plugins vielleicht drucken oder speichern möchtest.
    2. Um das WordPress-Plugin zu installieren, klicke auf Jetzt installieren.
  4. Der resultierende Installationsbildschirm zeigt die Installation als erfolgreich an oder weist auf Probleme während der Installation hin.
  5. Falls erfolgreich, klicke Plugin aktivieren, um es zu aktivieren, oder Zum Plugin-Installer zurückkehren für weitere Aktionen.

Manuelle Plugin-Installation

Es gibt einige wenige Fälle, in denen die manuelle Installation eines WordPress-Plugins angebracht ist.

  • Wenn du den Speicherort und den Installationsprozess eines WordPress-Plugins kontrollieren möchtest.
  • Falls dein Server keine automatische Installation eines WordPress-Plugins erlaubt.
  • Wenn du die neueste Entwicklungsversion ausprobieren möchtest.

Die manuelle Installation eines WordPress-Plugins setzt FTP-Kenntnisse sowie das Bewusstsein voraus, dass du deine Website aufs Spiel setzen könntest, wenn du ein WordPress-Plugin installierst, dass mit der aktuellen Version nicht kompatibel ist oder aus einer unzuverlässigen Quelle stammt.

Sichere deine Website komplett, bevor du weitermachst.

Um ein WordPress-Plugin von Hand zu installieren:

  • Lade dein WordPres-Plugin auf deinen Desktop herunter.
  • Falls du es als Zip-Archiv herunterlagen hast, entpacke den Plugin-Ordner auf deinem Desktop.
  • Lade den Plugin-Ordner mit deinem FTP-Programm in den Ordner wp-content/plugins in deinem WordPress-Verzeichnis hoch.
  • Geh zum Plugins-Bildschirm und such das neu hochgeladene Plugin in der Liste.
  • Klicke Aktivieren, um es zu aktivieren.



This plugin connects your WordPress blog to popular social platforms like Mastodon, making your posts more accessible to a wider audience. Once installed, your blog’s author pages can be followed by users on these platforms, allowing them to receive your new posts in their feeds.

Here’s how it works:

  1. Install the plugin and adjust settings as needed.
  2. Ensure your blog’s author profile page is active.
  3. On Mastodon or other supported platforms, search for and follow your author’s new profile (e.g.,
  4. Publish a new post on your blog and check if it appears in your Mastodon feed.

Please note that it may take up to 15 minutes for a new post to appear in your feed, as messages are sent on a delay to avoid overwhelming your followers. Be patient and give it some time.

Wie ist der Status dieses Plugins?

Bereits Implementiert:

  • Profilseiten (JSON-Darstellung)
  • individuelle Links
  • funktionaler Posteingang/-ausgang
  • folgen (Folgen annehmen)
  • Beiträge teilen
  • Kommentare/Reaktionen erhalten

Noch zu implementieren:

  • Signaturprüfung
  • bessere WordPress-Integration
  • bessere Konfigurationsmöglichkeiten
  • Unterstützung für verschachtelte Kommentare

Was ist „ActivityPub für WordPress“

ActivityPub for WordPress erweitert WordPress um einige Fediverse-Funktionen, konkurriert aber nicht mit Plattformen wie Friendica oder Mastodon. Wenn du ein dezentrales Social Network betreiben möchtest, verwende bitte Mastodon oder GNU social.

Was, wenn dein Blog in einem Unterverzeichnis deines Webservers liegt?

Damit webfinger funktioniert, muss es auf das Stammverzeichnis der URL abgebildet werden, auf der sich Dein Blog befindet.


Füge folgendes zur .htaccess-Datei im Hauptverzeichnis hinzu:

RedirectMatch "^\/\.well-known(.*)$" "\/blog\/\.well-known$1"

Wobei ‚blog‘ der Pfad zu dem Unterverzeichnis ist, in dem sich Dein Blog befindet.


Füge der site.conf in sites-available Folgendes hinzu:

location ~* /.well-known {
    allow all;
    try_files $uri $uri/ /blog/?$args;

Wobei ‚blog‘ der Pfad zu dem Unterverzeichnis ist, in dem sich Dein Blog befindet.


29. April 2023
This plugin is absolutely fabulous. I had never expected that connecting my WordPress site to the Fediverse would be SO SIMPLE. However, one thing surprised me. In the settings, the default is that it posts your 'full content' of your post to the Fediverse, rather than the more logical 400-character 'excerpt' Mastodon users won't be happy with getting posts of sometimes thousands of characters in their feed. I therefore suggest making 'excerpt' the default and people can choose 'full content' if they really wish that.
19. Januar 2023 1 Antwort
The indieweb and fediverse communities are doing great work and need to be acknowledged this plugin works well and the devs are constantly improving it
12. Januar 2023
With this plugin your posts appear automatically on Mastodon. Replies on Mastodon becomes comments on your post. Really, it couldn't be easier.
1. Januar 2023
Was able to subscribe to my WP weblog from Mastodon, post, and then all the replies went back as comments to my weblog post. Just lovely.
15. Dezember 2022 3 Antworten
<p>I am changing my review because not only has the issue of what to do if your blog is in a subdirectory been solved, but the solution is a tiny simple little snippet of code. This is now within reach for the vast majority. Now that it is working, it works like a dream. Anybody who has to manage multiple social media presences should use this, and even if you just have one, this takes a few steps off your to-do list and will save you lots of time. Definitely install this on your site. BTW, this is also good because you really want to nurture your relationship with federated platforms. If you're concerned about both free speech for real and fighting the spread of disinformation, federated platforms are the present and the future.  Support this. Spend on this. Seriously.</p>
Alle 15 Rezensionen lesen

Mitwirkende & Entwickler

„ActivityPub“ ist Open-Source-Software. Folgende Menschen haben an diesem Plugin mitgewirkt:


„ActivityPub“ wurde in 7 Sprachen übersetzt. Danke an die Übersetzerinnen und Übersetzer für ihre Mitwirkung.

Übersetze „ActivityPub“ in deine Sprache.

Interessiert an der Entwicklung?

Durchstöbere den Code, sieh dir das SVN Repository an oder abonniere das Entwicklungsprotokoll per RSS.


Project maintained on GitHub at pfefferle/wordpress-activitypub.


  • Fix type-selector
  • Allow more HTML elements in Activity-Objects


  • Return empty content/excerpt on password protected posts/pages


  • Remove scripts later in the queue, to also handle scripts added by blocks
  • Add published date to author profiles


  • „cc“, „to“, … fields can either be an array or a string
  • Remove „style“ and „script“ HTML elements from content


  • Fix fatal error in outbox


  • Fix „update and create, posts appear blank on Mastodon“ issue


  • Add „Outgoing Mentions“ (#213) props @akirk
  • Add configuration item for number of images to attach (#248) props @mexon
  • Use shortcodes instead of custom templates, to setup the Activity Post-Content (#250) props @toolstack
  • Remove custom REST Server, because the needed changes are now merged into Core.
  • Fix hashtags (#261) props @akirk
  • Change priorites, to maybe fix the hashtag issue


  • Enable ActivityPub only for users that can publish_posts
  • Persist only public Activities
  • Fix remote-delete


  • Better error handling. props @akirk


  • Fix Critical error when using Friends Plugin and adding new URL to follow. props @akirk


  • Fix „WebFinger not compatible with PHP < 8.0“. props @mexon


  • Friends support: props @akirk
  • Massive guidance improvements. props mediaformat & @akirk
  • Add Custom Post Type support to outbox API. props blueset
  • Better hash-tag support. props bocops
  • Fix user-count (NodeInfo). props mediaformat


  • fix webfinger for email identifiers


  • fix: Create and Note should not have the same ActivityPub ID


  • fix Follow issue AGAIN


  • fix Inbox issue


  • add Autor URL and WebFinger health checks
  • fix NodeInfo endpoint


  • use „pre_option_require_name_email“ filter instead of „check_comment_flood“. props @akirk
  • save only comments/replies
  • check for an explicit „undo -> follow“ action. see


  • fix inconsistent %tags% placeholder


  • fix follow/unfollow actions



  • fix inbox activities, like follow
  • fix debug


  • add image alt text to the ActivityStreams attachment property in a format that Mastodon can read. props @BenLubar
  • use the „summary“ property for a title as Mastodon does. props @BenLubar
  • support authorized fetch to avoid having comments from „Anonymous“. props @BenLubar
  • add new post type: „title and link only“. props @bgcarlisle


  • disable shared inbox
  • disable delete activity


  • some code refactorings
  • fix #73


  • fixed accept header bug


  • add all required accept header
  • better/simpler accept-header handling
  • add debugging mechanism
  • Add setting to enable AP for different (public) Post-Types
  • explicit use of global functions


  • fixed PHP warnings


  • Moved followers list to user-menu


  • added admin_email to metadata, to be able to „Manage your instance“ on


  • refactorings
  • fixed PHP warnings
  • better hashtag regex


  • fixed JSON representation of posts


  • fixed inbox problems with pleroma


  • finally fixed pleroma compatibility
  • added „following“ endpoint
  • simplified „followers“ endpoint
  • fixed default value problem


  • add tags as hashtags to the end of each activity
  • fixed pleroma following issue
  • followers-list improvements


  • fixed name-collision that caused an infinite loop


  • complete refactoring
  • fixed bug #30: Password-protected posts are federated
  • only send Activites when ActivityPub is enabled for this post-type


  • show avatars


  • finally fixed backlink in excerpt/summary posts


  • fixed backlink in excerpt/summary posts (thanks @depone)


  • finally fixed contact list


  • added settings to enable/disable hashtag support
  • fixed follower list
  • send activities only for new posts, otherwise send updates


  • added „followers“ endpoint
  • change activity content from blog ‚excerpt‘ to blog ‚content‘


  • better json encoding


  • basic hashtag support
  • temporarily deactivated likes and boosts
  • added support for actor objects
  • fixed encoding issue


  • customizable backlink (permalink or shorturl)
  • show profile-identifiers also on profile settings


  • added option to switch between content and excerpt
  • removed html and duplicate new-lines


  • fixed „excerpt“ in AS JSON
  • added settings for the activity-summary and for the activity-object-type


  • added basic WebFinger support
  • added basic NodeInfo support
  • fully functional „follow“ activity
  • send new posts to your followers
  • receive comments from your followers


  • refactoring
  • functional inbox
  • nicer profile views


  • initial