# Manage Fonts in Presentations Using Java

> Control fonts in Java with Aspose.Slides: embed, substitute, and load custom fonts to keep PPT, PPTX and ODP presentations clear, brand-safe, and consistent.

Source: https://docs.aspose.com/slides/java/manage-fonts/
Updated: 2026-08-13


## **Overview**

Aspose.Slides allows you to manage font properties in presentation text directly from your code. You can access text in slides through shapes, text frames, paragraphs, and portions, and then apply formatting to the selected text.

This article explains how to configure font-related properties for existing text in a presentation, including font family, bold and italic styles, paragraph alignment, and font color. It also shows how to create a text box, add text to it, and set font properties such as font family, bold, italic, underline, font size, and color before saving the result as a PPTX file.

## **Manage Font Related Properties**
{{% alert color="info" %}} 

Presentations usually contain both text and images. The text can be formatted in a various way, either to highlight specific sections and words or to conform with corporate styles. Text formatting helps users vary the look and feel of the presentation content. This article shows how to use Aspose.Slides for Java to configure the font properties of paragraphs of text on slides.

{{% /alert %}} 

To manage font properties of a paragraph using Aspose.Slides for Java:

1. Create an instance of the [Presentation](https://reference.aspose.com/slides/java/com.aspose.slides/presentation) class.
1. Obtain a slide's reference by using its index.
1. Access the [Placeholder](https://reference.aspose.com/slides/java/com.aspose.slides/placeholder/) shapes in the slide and typecast them to [AutoShape](https://reference.aspose.com/slides/java/com.aspose.slides/autoshape/).
1. Get the [Paragraph](https://reference.aspose.com/slides/java/com.aspose.slides/paragraph/) from the [TextFrame](https://reference.aspose.com/slides/java/com.aspose.slides/textframe/) exposed by [AutoShape](https://reference.aspose.com/slides/java/com.aspose.slides/autoshape/).
1. Justify the paragraph.
1. Access a [Paragraph](https://reference.aspose.com/slides/java/com.aspose.slides/paragraph/)'s text [Portion](https://reference.aspose.com/slides/java/com.aspose.slides/portion/).
1. Define the font using [FontData](https://reference.aspose.com/slides/java/com.aspose.slides/fontdata/) and set the **Font** of the text [Portion](https://reference.aspose.com/slides/java/com.aspose.slides/portion/) accordingly.
   1. Set the font to bold.
   1. Set the font to italic.
1. Set the font color using the [FillFormat](https://reference.aspose.com/slides/java/com.aspose.slides/fillformat/) exposed by the [Portion](https://reference.aspose.com/slides/java/com.aspose.slides/portion/) object.
1. Save the modified presentation to a PPTX file.

The implementation of the above steps is given below. It takes an unadorned presentation and formats the fonts on one of the slides. The screenshots that follow show the input file and how the code snippets change it. The code changes the font, the color, and the font style.

|![todo:image_alt_text](http://i.imgur.com/rqpPgJn.jpg)|
| :- |
|**Figure: The text in the input file**|


|![todo:image_alt_text](http://i.imgur.com/rY27Lt9.png)|
| :- |
|**Figure: The same text with updated formatting**|

```java
import com.aspose.slides.*;
import java.awt.Color;

// Instantiate a Presentation object that represents a PPTX file
Presentation pres = new Presentation("FontProperties.pptx");
try {
	// Accessing a slide using its slide position
	ISlide slide = pres.getSlides().get_Item(0);

	// Accessing the first and second placeholder in the slide and typecasting it as AutoShape
	ITextFrame tf1 = ((IAutoShape) slide.getShapes().get_Item(0)).getTextFrame();
	ITextFrame tf2 = ((IAutoShape) slide.getShapes().get_Item(1)).getTextFrame();

	// Accessing the first Paragraph
	IParagraph para1 = tf1.getParagraphs().get_Item(0);
	IParagraph para2 = tf2.getParagraphs().get_Item(0);

	// Justify the paragraph
	para2.getParagraphFormat().setAlignment(TextAlignment.JustifyLow);

	// Accessing the first portion
	IPortion port1 = para1.getPortions().get_Item(0);
	IPortion port2 = para2.getPortions().get_Item(0);

	// Define new fonts
	FontData fd1 = new FontData("Elephant");
	FontData fd2 = new FontData("Castellar");

	// Assign new fonts to portion
	port1.getPortionFormat().setLatinFont(fd1);
	port2.getPortionFormat().setLatinFont(fd2);

	// Set font to Bold
	port1.getPortionFormat().setFontBold(NullableBool.True);
	port2.getPortionFormat().setFontBold(NullableBool.True);

	// Set font to Italic
	port1.getPortionFormat().setFontItalic(NullableBool.True);
	port2.getPortionFormat().setFontItalic(NullableBool.True);

	// Set font color
	port1.getPortionFormat().getFillFormat().setFillType(FillType.Solid);
	port1.getPortionFormat().getFillFormat().getSolidFillColor().setColor(Color.BLUE);
	port2.getPortionFormat().getFillFormat().setFillType(FillType.Solid);
	port2.getPortionFormat().getFillFormat().getSolidFillColor().setColor(Color.GREEN);

	// Save the PPTX to disk
	pres.save("WelcomeFont.pptx", SaveFormat.Pptx);
} finally {
	if (pres != null) pres.dispose();
}
```

## **Set Text Font Properties**
{{% alert color="info" %}} 

As mentioned in **Managing Font Related Properties**, a [Portion](https://reference.aspose.com/slides/java/com.aspose.slides/portion/) is used to hold text with similar formatting style in a paragraph. This article shows how to use Aspose.Slides for Java to create a textbox with some text and then define a particular font, and various other properties of the font family category.

{{% /alert %}} 

To create a textbox and set font properties of the text in it:

1. Create an instance of the [Presentation](https://reference.aspose.com/slides/java/com.aspose.slides/presentation) class.
1. Obtain the reference of a slide by using its index.
1. Add an [AutoShape](https://reference.aspose.com/slides/java/com.aspose.slides/autoshape/) of the type **Rectangle** to the slide.
1. Remove the fill style associated with the [AutoShape](https://reference.aspose.com/slides/java/com.aspose.slides/autoshape/).
1. Access the of the [AutoShape](https://reference.aspose.com/slides/java/com.aspose.slides/autoshape/)'s [TextFrame](https://reference.aspose.com/slides/java/com.aspose.slides/textframe/).
1. Add some text to the [TextFrame](https://reference.aspose.com/slides/java/com.aspose.slides/textframe/).
1. Access the [Portion](https://reference.aspose.com/slides/java/com.aspose.slides/portion/) object associated with the [TextFrame](https://reference.aspose.com/slides/java/com.aspose.slides/textframe/).
1. Define the font to be used for the [Portion](https://reference.aspose.com/slides/java/com.aspose.slides/portion/).
1. Set other font properties like bold, italic, underline, color and height using the relevant properties as exposed by the [Portion](https://reference.aspose.com/slides/java/com.aspose.slides/portion/) object.
1. Write the modified presentation as a PPTX file.

The implementation of the above steps is given below.

|![todo:image_alt_text](http://i.imgur.com/n5r12dS.jpg)|
| :- |
|**Figure: Text with some font properties set by Aspose.Slides for Java**|

```java
import com.aspose.slides.*;
import java.awt.Color;

// Instantiate a Presentation object that represents a PPTX file
Presentation pres = new Presentation();
try {
	// Get first slide
	ISlide sld = pres.getSlides().get_Item(0);
	
	// Add an AutoShape of Rectangle type
	IAutoShape ashp = sld.getShapes().addAutoShape(ShapeType.Rectangle, 50, 50, 200, 50);
	
	// Remove any fill style associated with the AutoShape
	ashp.getFillFormat().setFillType(FillType.NoFill);
	
	// Access the TextFrame associated with the AutoShape
	ITextFrame tf = ashp.getTextFrame();
	tf.setText("Aspose TextBox");
	
	// Access the Portion associated with the TextFrame
	IPortion port = tf.getParagraphs().get_Item(0).getPortions().get_Item(0);
	
	// Set the Font for the Portion
	port.getPortionFormat().setLatinFont(new FontData("Times New Roman"));
	
	// Set Bold property of the Font
	port.getPortionFormat().setFontBold(NullableBool.True);
	
	// Set Italic property of the Font
	port.getPortionFormat().setFontItalic(NullableBool.True);
	
	// Set Underline property of the Font
	port.getPortionFormat().setFontUnderline(TextUnderlineType.Single);
	
	// Set the Height of the Font
	port.getPortionFormat().setFontHeight(25);
	
	// Set the color of the Font
	port.getPortionFormat().getFillFormat().setFillType(FillType.Solid);
	port.getPortionFormat().getFillFormat().getSolidFillColor().setColor(Color.BLUE);
	
	// Save the presentation to disk
	pres.save("pptxFont.pptx", SaveFormat.Pptx);
} finally {
	if (pres != null) pres.dispose();
}
```