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Matthias Pfefferle

@pfefferle@mastodon.social
mastodon 4.8.0-nightly.2026-10-06
  • Open on mastodon.social

web worker, blogger, podcaster, #openweb advocate and citizen of the #indieweb, the #ATmosphere and the #fediverse.

Open Web Wrangler @ #Automattic

I am currently working on the #ActivityPub and #ATmosphere plugin and several #IndieWeb (mainly #Webmentions) plugins for #WordPress! Besides of that, I maintain some other small Open Web plugins and try to help out on the #pluginkollektiv.

Follow my blog on the fediverse: "@pfefferle"

#fedi22 #microformats

4845 Followers
1039 Following
34 Posts
Joined May 06, 2017
WordPress:
https://profiles.wordpress.org/pfefferle/
Blog:
https://notiz.blog
Code:
https://github.com/pfefferle
Podcast:
https://openchannels.fm/host/matthias-pfefferle/
Open post
Matthias Pfefferle @pfefferle@mastodon.social
· 1mo ago
my #blogroll #plugin was just published on WordPress.org! any ideas for an icon? https://wordpress.org/plugins/blockroll/ #WordPress
WordPress.org

Blogroll & Podroll Block

Share the blogs and podcasts you follow, and let other people subscribe to your list.

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Open post
Matthias Pfefferle @pfefferle@mastodon.social
· 3mo ago

If you're trying out open-source software and run into any issues, please give the developers a chance to help before leaving a bad review.

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Open post
Matthias Pfefferle @pfefferle@mastodon.social
· 3mo ago
late #DIDit project: I just migrated my pfefferle.org away from google mail... was easier than I thought 😊 https://european-alternatives.eu/category/email-providers
european-alternatives.eu
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Open post
Matthias Pfefferle @pfefferle@mastodon.social
· 3mo ago

🇧🇪

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Open post
Matthias Pfefferle @pfefferle@mastodon.social
· 8mo ago
I got a t-shirt from @mediaformat@indieweb.social ♥️ #fosdem #wordpress #wapuu #fediverse #activitypub
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Open post
Matthias Pfefferle @pfefferle@mastodon.social
· 5mo ago

I am in a small hackathon project with @jeremy to bring the open social web to the WordPress.com reader (or the other way around)!

Stay tuned for more updates and have a nice weekend :)

#bluesky #activitypub #wordpress #mastodon #fediverse #automattic #radicalspeedmonth

herve.bzh
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Open post
Matthias Pfefferle @pfefferle@mastodon.social
· 6mo ago

I sat down with @snarfed.org to talk about his work around the #fediverse, the #indieweb and the #atmosphere including (fed.)brid.gy and @anewsocial@mastodon.social

https://openchannels.fm/connecting-decentralized-social-networks-and-rethinking-interoperability/

#podcast #activitypub #atproto #bluesky

fed.brid.gy
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Open post
Matthias Pfefferle @pfefferle@mastodon.social
· 6mo ago

I stumbled upon this "ARE YOU JUST
A .md FILE?" thingy this morning: https://deathbyclawd.com/

...and I couldn't resist to check for #ActivityPub

We are all save!

I like the "N/A — You cannot assassinate a standard. Ask RSS how that worked out." part 😂

/cc @davew@mastodon.social

Are You Just a .md File?
Death by Clawd

Are You Just a .md File?

Find out if your SaaS can be replaced by a Claude Skill. The SaaSpocalypse Survival Scanner.

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Open post
Matthias Pfefferle @pfefferle@mastodon.social
· 3mo ago
to all the #podlove #WordPress users: is that something you would love to see: https://github.com/Automattic/wordpress-activitypub/pull/3457 #fediverse #activitypub #podcast
github.com
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Open post
Matthias Pfefferle @pfefferle@mastodon.social
· 7mo ago
(digital) doodling a little #c2s #activitypub #ios #fediverse #wordpress
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Open post
Matthias Pfefferle @pfefferle@mastodon.social
· 5mo ago
Replying to
@mczachurski@mastodon.social I am more of a fan of the Activity Extension (your FEP). Adding meta data to HTML might be a noisy and with JSON meta, every platform can decide if and how itt wants to show them.
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Open post
Matthias Pfefferle @pfefferle@mastodon.social
· 6mo ago
Replying to
@bocops@fosstodon.org @activitypub.blog from a user perspective there is none. you can use either one of them!
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Open post
Matthias Pfefferle @pfefferle@mastodon.social
· 7mo ago
Replying to on mastodon.social
@box464@mastodon.social @fedify@hollo.social that is awesome ♥️ I first thought it "simply" shows the logo of the platform in ASCII art, but it really transforms the individual icon of the site ♥️♥️♥️
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Open post
Matthias Pfefferle @pfefferle@mastodon.social
· 5mo ago
Replying to
@peach@phpc.social that is not yet possible, but one of the top priorities of this year! https://activitypub.blog/2026/02/11/roadmap-2026-charting-the-stars-of-the-open-social-web/
Roadmap 2026 — Charting the stars of the open social web
ActivityPub for WordPress

Roadmap 2026 — Charting the stars of the open social web

The 2026 roadmap focuses on making WordPress easier to discover and interact with across the Fediverse. Key areas include better search and recommendations through FASP support, Starter Packs to he…

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Open post
Matthias Pfefferle @pfefferle@mastodon.social
· 5mo ago
Replying to
@andypiper@macaw.social 🫶 🥲
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Open post
Matthias Pfefferle @pfefferle@mastodon.social
· 5mo ago
Replying to
@deadsuperhero @elena ♥️
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Open post
Matthias Pfefferle @pfefferle@mastodon.social
· 5mo ago
Replying to
@mczachurski @silverpill https://codeberg.org/fediverse/fep/pulls/827/ ✅
Codeberg.org

FEP-ee3a: Add WordPress ActivityPub to implementations

fep - Fediverse Enhancement Proposals

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Open post
Matthias Pfefferle @pfefferle@mastodon.social
· 5mo ago
Replying to
@mczachurski@mastodon.social I think implementing it is part of the process. The more implementers, the easier to discuss possible glitches and improve the spec. I am not even sure if a FEP will be published as final without any known implementations… any suggestions @silverpill@mitra.social ?
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Open post
Matthias Pfefferle @pfefferle@mastodon.social
· 5mo ago
Replying to
@mczachurski@mastodon.social I started with publishing. The reader is not quite ready yet. https://github.com/Automattic/wordpress-activitypub/pull/2751
GitHub

Add EXIF metadata support for image attachments by pfefferle · Pull Request #2751 · Automattic/wordpress-activitypub

Fixes #2759 Proposed changes: Add EXIF metadata support for ActivityPub image attachments using Schema.org vocabulary as defined in FEP-ee3a. EXIF data is represented as an array of PropertyValue ...

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Open post
Matthias Pfefferle @pfefferle@mastodon.social
· 5mo ago
Replying to
@mczachurski which is fine! But if you add these without the possibility for readers to opt out, you have to expect complains!
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Open post
Matthias Pfefferle @pfefferle@mastodon.social
· 16mo ago
Replying to
@_elena@mastodon.social you forgot the #longformers 🥲
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Open post
Matthias Pfefferle @pfefferle@mastodon.social
· 6mo ago
Replying to
@ted@an.errant.cloud this is a caching issue. should be fixed now.
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Open post
Matthias Pfefferle @pfefferle@mastodon.social
· 10mo ago
Replying to
congrats @mellifluousbox@mastodon.social 🙌
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Matthias Pfefferle @pfefferle@mastodon.social
· 10mo ago
Replying to
@atarifrosch@mastodon.de it does! 7.6.0 brings the full editor settings to the classic editor for example! https://github.com/Automattic/wordpress-activitypub/pull/2378 @activitypub.blog
GitHub

Move default visibility logic to UI and classic editor by pfefferle · Pull Request #2378 · Automattic/wordpress-activitypub

This PR removes the server-side default_post_meta_data filter and shifts the logic for determining default ActivityPub content visibility to the UI layer. The change ensures consistent behavior bet...

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Open post
Matthias Pfefferle @pfefferle@mastodon.social
· 1mo ago
Replying to
@teezeh@ieji.de was änderst du auch dein Avatar! Wie soll ich dich denn da noch erkennen! ☺️
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Open post
Matthias Pfefferle @pfefferle@mastodon.social
· 8mo ago
Replying to on mastodon.scot
@gunchleoc@mastodon.scot thanks… but I have no android device ☺️
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Open post
Matthias Pfefferle @pfefferle@mastodon.social
· 6mo ago
Replying to
@strypey@mastodon.nzoss.nz @hexaheximal@mstdn.social @xarvos@outerheaven.club @FediTips@social.growyourown.services don't you think a project with more than 10 years of experience and thousands of lines of code know what they are doing!?
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Open post
Matthias Pfefferle @pfefferle@mastodon.social
· 6mo ago
Replying to
@strypey@mastodon.nzoss.nz @xarvos@outerheaven.club @hexaheximal@mstdn.social @FediTips@social.growyourown.services only because there is a CLAUDE.md or AGENTS.md does not mean a project is vibe coded. The ActivityPub plugin has also several agents/skills that ensure code quality, run phpcs or phpunit before code is commited and help with security audits!
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Open post
Matthias Pfefferle @pfefferle@mastodon.social
· 6mo ago
Replying to
@geniodiabolico@mastodon.geniodiabolico.synology.me @strypey@mastodon.nzoss.nz @hexaheximal@mstdn.social @xarvos@outerheaven.club @FediTips@social.growyourown.services Sure, but why would you assume it works the same in the other direction? Assumptions are always risky.
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Matthias Pfefferle @pfefferle@mastodon.social
· 23mo ago
Replying to
@Gargron@mastodon.social sad but true!
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Open post
Matthias Pfefferle @pfefferle@mastodon.social
· 5mo ago
Replying to
@mczachurski@mastodon.social I implemented the FEP btw ☺️
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Open post
Matthias Pfefferle @pfefferle@mastodon.social
· 10mo ago
Replying to
Thanks @perksofbeingben@tech.lgbt ☺️ @activitypub.blog
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Open post
Matthias Pfefferle @pfefferle@mastodon.social
· 6mo ago
Replying to
@janeckhoff@chaos.social what client do you use?
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Open post
Matthias Pfefferle @pfefferle@mastodon.social
· 6mo ago
Replying to
@geniodiabolico@mastodon.geniodiabolico.synology.me @strypey@mastodon.nzoss.nz @hexaheximal@mstdn.social @xarvos@outerheaven.club @FediTips@social.growyourown.services no, I am wondering why people assume that a project is "slop" only because of a CLAUDE.md
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