Convert PowerPoint Presentations to Animated GIFs in JavaScript

Converting Presentations to Animated GIF Using Default Settings

This sample code in JavaScript shows you how to convert a presentation to animated GIF using standard settings:

var pres = new aspose.slides.Presentation("pres.pptx");
try {
    pres.save("pres.gif", aspose.slides.SaveFormat.Gif);
} finally {
    if (pres != null) {
        pres.dispose();
    }
}

The animated GIF will be created with default parameters.

TIP

If you prefer to customize the parameters for the GIF, you can use the GifOptions class. See the sample code below.

Converting Presentations to Animated GIF Using Custom Settings

This sample code shows you how to convert a presentation to animated GIF using custom settings in JavaScript:

var pres = new aspose.slides.Presentation("pres.pptx");
try {
    var gifOptions = new aspose.slides.GifOptions();
    gifOptions.setFrameSize(java.newInstanceSync("java.awt.Dimension", 960, 720));// the size of the resulted GIF
    gifOptions.setDefaultDelay(2000);// how long each slide will be showed until it will be changed to the next one
    gifOptions.setTransitionFps(35);// increase FPS to better transition animation quality
    pres.save("pres.gif", aspose.slides.SaveFormat.Gif, gifOptions);
} finally {
    if (pres != null) {
        pres.dispose();
    }
}

Info

You may want to check out a FREE Text to GIF converter developed by Aspose.

FAQ

What if the fonts used in the presentation aren’t installed on the system?

Install the missing fonts or configure fallback fonts. Aspose.Slides will substitute, but the appearance may differ. For branding, always ensure the required typefaces are explicitly available.

Can I overlay a watermark on the GIF frames?

Yes. Add a semi-transparent object/logo to the master slide or to individual slides before export — the watermark will appear on every frame.