st.subheader() in Streamlit

The st.subheader() method is a text display function in Streamlit used to show a heading smaller than st.header() but larger than regular text.

It is typically used to break content into sub-sections or highlight secondary titles under a main header.

Syntax

st.subheader(body)    

The function has the following parameter:

• body: The text to display as a subheader. It can be a string, f-string, or Markdown-supported text.

Streamlit automatically applies a slightly smaller font size than st.header() and displays the text in bold.

Example: Basic Subheader.

Python

import streamlit as st

department = "Sales"

st.subheader(f"Performance Details: {department} Department")

# Using Markdown Formatting
st.subheader("_Quarterly_ Sales Report")  

The output of the above code is shown below: