# How can I change the size of the labels of a diagram made with tikzcd?

I am writing a LaTeX document with lots of diagrams, however, I just found out their labels are too small to be read. For example, take a look at the diagram

\begin{tikzcd}[row sep=large,column sep=large]
0 \arrow[r] & C_{\bullet} \arrow[d,"\gamma"] \arrow[r,"F"] & D_{\bullet} \arrow[d,"\delta"] \arrow[r,"G"] & E_{\bullet} \arrow[d,"\epsilon"] \arrow[r] & 0\\
0 \arrow[r] & C'_{\bullet} \arrow[r,"F"] & D'_{\bullet} \arrow[r,"G"] & E'_{\bullet} \arrow[r] & 0\\
\end{tikzcd}


The general settings of the document are given by

\documentclass[11pt,a4paper,twoside]{book}


And I would simply like to view F,G,\gamma,\delta and \epsilon as regular mathmode letters, with their usual shape and size.

It suffices to add every label/.append style={font=\normalsize}.

\documentclass[11pt,a4paper,twoside]{book}
\usepackage{tikz-cd}
\begin{document}
\begin{tikzcd}[row sep=large,column sep=large,every label/.append
style={font=\normalsize}]
0 \arrow[r] & C_{\bullet} \arrow[d,"\gamma"] \arrow[r,"F"] & D_{\bullet} \arrow[d,"\delta"] \arrow[r,"G"] & E_{\bullet} \arrow[d,"\epsilon"] \arrow[r] & 0\\
0 \arrow[r] & C'_{\bullet} \arrow[r,"F"] & D'_{\bullet} \arrow[r,"G"] & E'_{\bullet} \arrow[r] & 0\\
\end{tikzcd}
\end{document}


If you wish to apply this to all your diagrams, use

\tikzcdset{every label/.append style={font=\normalsize}}


\documentclass[11pt,a4paper,twoside]{book}
\usepackage{tikz-cd}
\tikzcdset{every label/.append style={font=\normalsize}}
\begin{document}
\begin{tikzcd}[row sep=large,column sep=large]
0 \arrow[r] & C_{\bullet} \arrow[d,"\gamma"] \arrow[r,"F"] & D_{\bullet} \arrow[d,"\delta"] \arrow[r,"G"] & E_{\bullet} \arrow[d,"\epsilon"] \arrow[r] & 0\\
0 \arrow[r] & C'_{\bullet} \arrow[r,"F"] & D'_{\bullet} \arrow[r,"G"] & E'_{\bullet} \arrow[r] & 0\\
\end{tikzcd}
\end{document}

• Can I add that command somewhere else so that it can be applied to all my existing diagrams? – Akerbeltz Nov 3 at 17:58
• @Akerbeltz Sure. I added the relevant command to the answer. – Schrödinger's cat Nov 3 at 18:00