Heya!
Recently I was looking back through some of my old files when I came across some old projects I made in Scratch 2.0. I want to post them, but they obviously aren't compatible with the new site. I've seen lots of .sb3 to .sb2 conversion but I'm not sure if it can be done the other way around and I don't really want to recreate the projects from scratch (excuse the pun). Anyone got any ideas? Thanks in advance.

.sb2 files (and to an extent, .sb files from Scratch 1.x) are actually compatible with Scratch 3.0. You don't need to convert it or recreate it, just upload the existing .sb2 file and it will work.

Simply open the project in Scratch 3, then share it.

Oh, so they are compatible! The files were refusing to open earlier, I guess the issue was on my end. Thanks!