▶ Suggestion I first noticed how Bluesky was handling thumbnails months ago when starting the Repeal OBBBA effort. I monkeyed with images used in admin/site_settings/category/branding but no joy. Other sites: X, Facebook, Reddit, Discord, mastodon all generated the thumbnail just fine so eventually I…

[afbeelding] philh: I am hoping folks can help me sort what image needs to be added to Discourse to get very cool thumbnails on Bluesky. The OpenGraph image setting should do it, here’s how ours is configured for Meta, to reflect what you’re seeing in posts [image]

Thanks @awesomerobot What size and type is your OpenGraph image? I am trying different sizes but no change so far. Results so far: @phillipnhenry.bsky.social on Bluesky

It’s a 2400 × 1260 JPEG, which is double the 1200x630 recommend (helps cover devices with 2x pixel density). I believe most social networks will cache open graph images, so changes may not appear immediately.

I changed to something larger that I had handy (a favorite). tried on two sites and the change with Bluesky post thumbnails was immediate so no apparent caching. OpenGraph image → 1500x500 jpeg [soaringtwitter] Thanks again @awesomerobot marking as solved.

Bluesky thumbnails

Ondersteuning

awesomerobot (Kris) 24 februari 2026 om 19:20 2

The OpenGraph image setting should do it, here’s how ours is configured for Meta, to reflect what you’re seeing in posts

Topic		Antwoorden	Weergaven
Best Practices for Open Graph setup with a new community? Self-hosting	4	3028	13 mei 2020
Is there a way to change the OpenGraph image of my forum? Support	2	453	19 mei 2021
Ignore favicon, use default open graph image to create og:image tags Feature	19	5292	3 oktober 2018
Issue with topic/posts images Support	8	900	6 december 2023
Overwrite meta og:image image source to use externally public loaded images on topics? Feature	7	2965	26 oktober 2020

Bluesky thumbnails

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