How to increase size of label fonts in barplot - Cross Validated How to increase size of label fonts in barplot. Ask Question Asked 11 years, 8 months ago. Modified 11 years, 8 months ago. Viewed 99k times 7. votes. 5 $\begingroup$ Locked. This question and its answers are locked because the question is off-topic but has historical significance. It is not currently accepting new answers or interactions.