# Convert PPTX to PPSX in Node.js

> Convert PPTX to PPSX in Node.js. Use a Node.js library API to convert PPTX files to PPSX files.

Source: https://products.aspose.com/slides/nodejs-java/conversion/pptx-to-ppsx/
Updated: 2026-07-16



## Convert PPTX to PPSX in Node.js

[**Aspose.Slides for Node.js via Java**](/slides/nodejs-java/) lets developers create, read, edit, and convert presentation files in Node.js applications. You can load a `PPTX` file with the `Presentation` class and export it to a `PPSX` file by using the presentation API.

## Convert PPTX to PPSX using Node.js

To convert `PPTX` to `PPSX`, create a `Presentation` from the source file and export it to a `PPSX` file.

### Node.js code to convert PPTX to PPSX

```javascript
const presentation = new aspose.slides.Presentation("sourceFile.pptx");
try {
    presentation.save("output.ppsx", aspose.slides.SaveFormat.Ppsx);
}
finally {
    presentation.dispose();
}
```

## How to convert PPTX to PPSX using Aspose.Slides for Node.js via Java API

To convert PPTX to PPSX using Aspose.Slides for Node.js via Java, import the package, load the source file, and export it in the required format.

Install [**Aspose.Slides for Node.js via Java**](/slides/nodejs-java/).

Import the `aspose.slides.via.java` package in your Node.js project.

Load the source `PPTX` file with the `Presentation` class.

Call the `save` method with the output file path and `SaveFormat.Ppsx`.

## Convert PPTX to Other Supported Formats