Is there a limit (lower than 4 MB) on your instance? If not, why didn't you upload the full version directly?
Dungeon Meshi
A Community for Dungeon Meshi a.k.a. Delicious in Dungeon.
The first season of the anime adaptation can be found on Netflix. Season 2 is confirmed and presumably currently in production.
DO NOT SPOIL THE ANIME WATCHERS
- Do not discuss events or characters from manga chapters past #52, without clearly marking as spoilers
- Offending posts and comments will be immediately removed without warning
This is so that the anime watchers can sub to the community without worry of seeing posts that would spoil later parts of the story. This includes manga pages and panels, mentioning characters, fanart, etc.
Parent instance rules also apply, of course.
Not the OP, but...most instances (including ani.social) auto-convert any uploaded images to webp to save storage space since they are run on user donations. That conversion will impact image quality.
Edit: Also, this is semi-automated through some post-creation tools by the OP and some of the booru images are really, really big. So, having a reasonably sized version makes sense for the formatting.
.webp can be lossless, and is often still smaller than .png, but I'm guessing ani.social uses lossy compressed .webp then?
That's good to know, will check what my instance does, just in case! Thanks for the explanation!
For speed.
Since I'm not uploading to my instance but hosting using catbox, I could upload the full image as the main image every time. (Instance limit is 1mb, and it also further compresses all images into webp files)
But for some users on mobile apps in places with crap internet, larger files mean they have to wait for the post to load for potentially tens of seconds. That's really annoying, just to see what someone posted.
In order for my posts to load relatively instantly no matter the conditions in which a user is browsing lemmy, I thumbnail any image larger than a megabyte into something smaller. For any images like this I then link the original file, should someone like to see the piece in full quality.
That makes sense, thanks for the explanation!