
Why are the top and bottom of the O cut off when I use the standalone class without any larger symbols?
\documentclass{standalone}%
\begin{document}%
O%
\end{document}%

Why are the top and bottom of the O cut off when I use the standalone class without any larger symbols?
\documentclass{standalone}%
\begin{document}%
O%
\end{document}%
You can use the option [border=<size>] to change the margin.
\documentclass[border=2pt]{standalone}
\begin{document}
O
\end{document}

Aren't. Without 12pt and \Huge is also OK, but less visible.
\documentclass[12pt]{standalone}% \begin{document}% \Huge
O% \end{document}%

(Sorry that not as a comment, but i don't know, how to add a picture there).