>>106271108
>You can turn them back into pngs after.
Don't do that. Saving as JPG reduces quality and introduces artifacts.

>>106271180
They're embedding links to various things, including apparently CP nowadays. The shitposters don't embed the actual data, though it is possible to do so.

>>106271268
They're embedding it in the image itself now (and have been doing so for a long time). Not sure why they're not just putting the IDs in the names instead.

>>106274712
>manually screenshotting makes the image a pixel or so wider or narrower (its never perfect)
What the hell kind of screenshot tool are you using? A proper lossless screenshot of a full-size image should have a 1:1 copy of the image's color values. The only things you're losing are transparency and metadata.