Overview when using S3 or cloudflare R2 for uploads alongside a custom CDN URL, custom emoji uploads do not respect the CDN configuration and attempt to load directly from the raw bucket URL. The issue when an admin uploads a custom emoji, the uploader creates an upload record and saves the raw buc…

Testing a default set emoji :smiley: Testing a custom emoji :falco:

yea maybe it’s a cloudflare R2 only thing then. they are breaking on my instance. it only seems to break for new ones uploaded too. without the theme component fix, i have to run the remap every time i upload a new one. the PR might need a bit of work - i’m not super good with the emoji code.

Discourse uses a two CDN setup, one for assets and one proxying the app. Standard emoji uses one CDN, custom emoji uses the other CDN, but both are protected by a CDN on a properly configured website with a working two CDN setup. I went over that in the first related topic here [صورة…

oh i’ll have to have a look - i didn’t know that. thanks! edit: [صورة] Custom emoji don't use CDN for S3 stored assets in a few pages So standard emoji use one CDN while custom use another, but both are covered by CDN if you do a proper configuration following Using Object Storage for Uploads …

just confirming here that i installed and tested the PR branch after the recent changes to it and it fixes the issue.

[صورة] Lilly: i wrote the section for Cloudflare R2 so assume i have it setup correctly? what might i be missing? It is this section of the wiki guide I wrote: [صورة] Configure an S3 compatible object storage provider for uploads DISCOURSE_CDN_URL is a CDN that points to you Discourse hos…

[صورة] Falco: Do your test site have both CDN ENV vars set? i do have them set, but for gods sake i had a typo in my cloudflare config for the cdn-specific dns record that DISCOURSE_CDN_URL points to and i never tested it when i set it up because my site was working :laughing: what a gong sho…

Ha, no worries! [صورة] Lilly: at least i learned more about emoji code creating that pointless PR… That is how I learn the most, chasing rabbit holes that will never amount to anything tangible. But the knowledge from those is golden!

wow what a ride this was. i basically reconfigured my whole Cloudfare R2 object storage and Discourse instance, and i think this bug is legit for R2. when i fixed my cloudflare dns record and rebuilt the instance so that DISCOURSE_CDN_URL actually pointed to it, it borked a bunch of other stuff li…

إيموجي مخصصة محملة من S3/R2 تتجاوز توجيه CDN

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Falco (Falco) 30 يونيو 2026، 5:28م 8

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الموضوع		الردود	مرات العرض
Custom emoji don't use CDN for S3 stored assets in a few pages Support	7	2319	6 أغسطس 2020
Emoji Picker is not not using CDN URLs for custom emojis Bug emoji	10	298	3 يونيو 2025
How do custom emoji URLs work? Development	0	677	8 أغسطس 2020
Chat thumbnails bypass s3_cdn_url & use raw S3 bucket URLs Bug cdn , s3 , chat , fixed	6	310	19 يونيو 2026
Custom Emoji does not use Amazon S3 Feature	3	1283	16 مارس 2016

إيموجي مخصصة محملة من S3/R2 تتجاوز توجيه CDN

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