Oki, what makes a thumbnail good, in my opinion, is that it should sorta advertise a project well.
Like, you wouldn’t want to have a project that’s like game changers level, and have a simple enlarged emoji and some regular text as the thumbnail.
I know that’s judging a book by its cover but still, people do it.
For example, say you got two presents, and they’re the exact same thing, just one is in a plain brown box, and the other’s covered in bright wrapping paper and pretty bows. Which would you rather open first? The wrapped one, right? It’s the same thing with people and projects.
And it should look professional, maybe without emojis, maybe with bold text, maybe a cool background, etc, also with good code too.
It also is good to make the thumbnail reflect the project, and what it’s about.
You also wouldn’t want to have like a 5-star thumbnail for a really simple unfeature-worthy project.
Some users like Petrichor have hidden thumbnails, and when a certain action is performed (say, swipe that X in the top left corner) the thumbnail will appear.
These people use invisibility blocks to do this, and I think it’s pretty easy, although I’ve never tried it.
Whoa I can write a novel on thumbnails at 12:30 am, I did not know that.
Wait, what the heck am I even doing up at 12:30?