Hide tags button?

[Jackalope]

It's not terribly useful for non-programmers. It lets you quote PHP code and prettifies it.

Has there been a lot of PHP quoting in the past or is that just a standard forum button?

That would be "imgfit"

That's the one I always forget.

Is there a way to resize an image to a particular percentage? Say, the image is 600x800 and you want it to appear at 50% in thread?

I think I've tried [img width=# height=#] or various plays on the theme from the days when I knew how to write html but I suspect that just won't work here...

It's a standard feature of the advanced editor.

I don't think there are any bbcode tags to resize images like that. Personally, I resize them before I upload if I can.