Show threadMario BreskicAug 18, 2025

#PreviewCards are still being created, despite the patches.

Changed the #sidekiq patch to target the LinkCrawlWorker like so:

command: >
bash -c "bundle exec rails runner 'class FetchLinkCardService; def call(*args); nil; end; end' &&
bundle exec sidekiq"

Show threadMario BreskicAug 18, 2025

Filed a bug: https://github.com/mastodon/mastodon/issues/35813

Which is also a test for the patch ;)

#server #asca #mastodon #gdpr #PreviewCards

DISABLE_FETCH_PREVIEWS=true is being ignored in v4.4.3 in docker · Issue #35813 · mastodon/mastodon

Steps to reproduce the problem the environmental setting DISABLE_FETCH_PREVIEWS=true to .env or .yaml file should turn off the creation of PreviewCards for links in posts restarting the containers ...

GitHub
Show threadMario BreskicAug 18, 2025

And from there, I delete all #PreviewCards in #mastodon by using these commands:

1. docker compose exec web bash
2. RAILS_ENV=production bundle exec rails console
And then I run this in the console: PreviewCard.destroy_all

This will run for a while but it should remove all stored preview cards from my mastodon server, for all posts.
And it worked. Just climb back up to my prompt by punching in “exit” until I am back home, and that issue has been fixed as well. #server #asca #mastodon #gdpr

FinchHaven infosecOct 1, 2024

Early days yet, but now being on v4.4.0-alpha.1+glitch (was: v4.3.0-rc.1+glitch) (Firefox browser tabs) and seeing the pruned right sidebar list and seeing "App settings" clearly featured and clicking on said "App settings" and selecting "Media" and unselecting "Inline preview cards for external links" I do believe i've finally gotten rid of those GD MF hot-link preview cards

Which I've always hated with the red-hot passion of 10,000 suns

OK: check that:

The hot-link preview card returns if I click-open the post itself

But at least the damned things are off my Home feed

#Mastodon #430rc1 #PreviewCards

Show threadFinchHaven infosecAug 23, 2024

@k8vsy

"...but there are so many URL previews and pictures, hmm"

Think you're talking about the #PreviewCards that our boy #Gargron decided #Mastodon had to have for...

...some reason

I hate them: not only do they take up too much screen space but they're also live hot links into whatever web site is being advertised by them

And, the Preview Card hot links completely ignore any "subscription-free" link that might have been added in by the poster

The Preview Cards make some entity happy, but I'm not sure why people at large on Mastodon need them

It was something Gargron felt needed to be added, and that was the end of the question

FinchHaven sfbaJun 27, 2024

Y'all ready for the next new "feature" our boy #Gargron has decided #Mastodon simply *must* have?

How about #HoverCards?

Currently for the web UI only, this will be like those delightful #PreviewCards that appear in posts with links out to mainstream web sites, but Hover Cards will pop up a preview of the user's profile if you hover your mouse over the user name in posts

Still a few bugs to be worked out, but this is an active Pull Request, so just you wait!

Whee!

Here: https://github.com/mastodon/mastodon/pull/30850

Change hover cards to not appear until the mouse stops in web UI by Gargron · Pull Request #30850 · mastodon/mastodon

Reduce the amount of times that events get added and removed from body because of state changes Block hover cards from appearing when actively scrolling Delay hover cards until mouse movement stops...

GitHub
Jeff's BookmarksOct 20, 2023
Flooding the Fediverse - Mastodon Link Preview Cards
I once took down a small FunkWhale instance by linking out to a song on the server. As it got boosted quickly, each Mastodon instance would reach out to build their own version of the oEmbed causing the site to go down. Oops! This site discusses possible solutions to these type of situations.

#fediverse #previewcards #mastodon #funkwhale #oembed

jort.link - a solution to fediverse request floods

A URL redirector and shield to solve fediverse request floods.

WIST Quotations moves again!Apr 25, 2023

ADMINISTRIVIA: Time for my periodic ask. For some reason, links to wist.info are not generating #PreviewCards here on #Mastodon (though they do in Twitter, FB, diaspora*, etc., and they test clean on various #OpenGraph testing sites). E.g., https://wist.info/euripides/60428/ .

Since such title cards would include title info, that would be helpful for readers here.

Anyone know anyone who might have a clue as to what's not quite right?

Appreciate any boost you can give.