Highlighting important text in your PowerPoint slides can be an effective way to draw your audience's attention and emphasize key points. Whether you are presenting complex information or delivering a persuasive pitch, using text highlighting can make your slides more visually engaging and help your message stand out. In this article, we will demonstrate how to highlight text in a PowerPoint presentation in Python using Spire.Presentation for Python.

Install Spire.Presentation for Python

This scenario requires Spire.Presentation for Python. It can be easily installed in your Windows through the following pip command.

pip install Spire.Presentation

If you are unsure how to install, please refer to this tutorial: How to Install Spire.Presentation for Python on Windows

Highlight Text in PowerPoint Presentation in Python

Spire.Presentation for Python provides a method called IAutoShape.TextFrame.HighLightText(text: str, color: Color, options: TextHighLightingOptions) to highlight specific text within the shapes of a PowerPoint presentation.

Follow the steps below to highlight specified text in your presentation using Spire.Presentation for Python:

• Create an instance of the Presentation class.
• Load a PowerPoint presentation using the Presentation.LoadFromFile() method.
• Create an instance of the TextHighLightingOptions class, and set the text highlighting options such as whole words only and case sensitive through the TextHighLightingOptions.WholeWordsOnly and TextHighLightingOptions.CaseSensitive properties.
• Loop through the slides in the presentation and the shapes on each slide.
• Check if the current shape is of IAutoShape type.
• If the result is true, typecast it to an IAutoShape object.
• Highlight all matches of specific text in the shape using the IAutoShape.TextFrame.HighLightText(text: str, color: Color, options: TextHighLightingOptions) method.
• Save the result presentation to a new file using the Presentation.SaveToFile() method.

from spire.presentation.common import *
from spire.presentation import *

# Specify the input and output file paths
input_file = "Example.pptx"
output_file = "HighlightText.pptx"

# Create an instance of the Presentation class
ppt = Presentation()
# Load the PowerPoint presentation
ppt.LoadFromFile(input_file)

# Specify the text to highlight
text_to_highlight = "Spire.Presentation"
# Specify the highlight color
highlight_color = Color.get_Yellow()

# Create an instance of the TextHighLightingOptions class
options = TextHighLightingOptions()
# Set the highlight options (case sensitivity and whole word highlighting)
options.WholeWordsOnly = True
options.CaseSensitive = True

# Loop through the slides in the presentation
for slide in ppt.Slides:
    # Loop through the shapes on each slide
    for shape in slide.Shapes:
            # Check if the shape is of IAutoShape type
            if isinstance (shape, IAutoShape):
                # Typecast the shape to an IAutoShape object
                auto_shape = IAutoShape(shape)
                # Search and highlight specified text within the shape
                auto_shape.TextFrame.HighLightText(text_to_highlight, highlight_color, options)

# Save the result presentation to a new PPTX file
ppt.SaveToFile(output_file, FileFormat.Pptx2013)
ppt.Dispose()

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