How to increase the font size of a Text widget?

We can customize the Tkinter widget by modifying the value of its properties such as font-family, text-size, width, the height of the frame, etc. Tkinter Text widgets are generally used for accepting multiline user input. It is similar to a standard text widget.

To configure the text properties of a widget, we can use the font('font-family font-size font-style') attribute by defining its font-family, font-size, and the font style.

Basic Example

Here's how to create a Text widget with customized font size ?

# Import tkinter library
from tkinter import *

# Create an instance of Tkinter frame or window
win = Tk()

# Set the geometry of tkinter frame
win.geometry("750x250")

# Create a Text widget with custom font
text = Text(win, width=60, height=10, font=('Century Schoolbook', 20, 'italic'))
text.insert(INSERT, "Hello\nWelcome to TutorialsPoint.com!")
text.pack()

win.mainloop()

The output displays a text editor with customized font attributes ?

Different Font Sizes

You can easily change the font size by modifying the second parameter in the font tuple ?

from tkinter import *

win = Tk()
win.geometry("800x400")

# Small font size (12)
text1 = Text(win, width=50, height=3, font=('Arial', 12, 'normal'))
text1.insert(INSERT, "Small font size (12px)")
text1.pack(pady=10)

# Medium font size (16)
text2 = Text(win, width=50, height=3, font=('Arial', 16, 'normal'))
text2.insert(INSERT, "Medium font size (16px)")
text2.pack(pady=10)

# Large font size (24)
text3 = Text(win, width=50, height=3, font=('Arial', 24, 'normal'))
text3.insert(INSERT, "Large font size (24px)")
text3.pack(pady=10)

win.mainloop()

Font Configuration Options

Using tkinter.font Module

For more advanced font control, you can use the tkinter.font module ?

from tkinter import *
from tkinter import font

win = Tk()
win.geometry("600x300")

# Create a custom font object
custom_font = font.Font(family="Helvetica", size=18, weight="bold")

# Apply the custom font to Text widget
text = Text(win, width=40, height=8, font=custom_font)
text.insert(INSERT, "Custom font using tkinter.font module\nFont size: 18px\nWeight: bold")
text.pack(pady=20)

win.mainloop()

Conclusion

To increase font size in Tkinter Text widgets, modify the second parameter in the font tuple: font=('Arial', 20, 'normal'). Use the tkinter.font module for advanced font customization and better control over text appearance.