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Change Font Size in Matplotlib - GeeksforGeeks To change the font size in Matplotlib, the two methods given below can be used with appropriate parameters: Method 1: matplotlib.rcParams.update () rcParams is an instance of matplotlib library for handling default matplotlib values hence to change default the font size we just have to pass value to the key font.size. How do I change the font size of the scale in Matplotlib plots? Steps. Set the figure size and adjust the padding between and around the subplots. Create a figure and a set of subplots. Plot x data points using plot () method. To change the font size of the scale in matplotlib, we can use labelsize in the ticks_params () method. To display the figure, use show () method. Change Font Size of elements in a Matplotlib plot import matplotlib.pyplot as plt, plt.rcParams.update( {'font.size':20}) The above syntax changes the overall font size in matplotlib plots to 20. Note that, the default font size is 10. You...