A quick tip for those designing web interfaces with an “X” icon for a “Close” element. Rather than the letter “x” (or capital “X”), use the multiplication (U+2715) or heavy multiplication (U+2715) symbols.
There’s no semantic advantage as neither the letter X nor the ✕ symbol have the appropriate meaning, but we’re just using the character to define a shape (often rendered as an image).
In most fonts the multiplication symbol is vertically and horizontal symetrical and has angled end strokes. It really just looks better. The heavy variation looks even prettier.
|✕||✖||Multiplication (U+2715) / Heavy Multiplication (U+2715)|
|X||X||Latin Capital Letter X (U+0058), normal / bold|
|x||x||Latin small Letter X (U+0078), normal / bold|