Browse our Products

Aspose.Slides for Java 25.3 Release Notes

This page contains release notes for Aspose.Slides for Java 25.3

Key	Summary	Category	Related Documentation
SLIDESNET-44389	GetThumbnail method is locked in multi threads while converting slides to images	Enhancement	https://docs.aspose.com/slides/net/convert-powerpoint-to-png/
SLIDESNET-44846	Option to remove JavaScript when converting Presentation to HTML	Feature	https://docs.aspose.com/slides/net/convert-powerpoint/
SLIDESNET-44803	Implement a method for retrieving text based on column settings	Feature
SLIDESNET-44792	Extracting captions from videos	Feature	https://docs.aspose.com/slides/net/video-frame/
SLIDESNET-44774	Add possibility to specify JPEG quality when saving image to JPEG in Modern API	Feature	https://docs.aspose.com/slides/net/modern-api/
SLIDESNET-44831	Implement support for the DisableFontLigatures property in IHtml5Options	Feature
SLIDESNET-44819	PptxReadException occurs when loading a PPTX file	Feature	https://docs.aspose.com/slides/net/open-presentation/
SLIDESJAVA-39563	Use Aspose.Slides for Net 25.3 features	Enhancement
SLIDESJAVA-39629	Poor performance when converting PPTX to PDF using metered license	Enhancement	https://docs.aspose.com/slides/java/convert-powerpoint-to-pdf/
SLIDESJAVA-38841	Charts are not displayed properly when converting PPTX to PDF	Bug	https://docs.aspose.com/slides/java/convert-powerpoint-to-pdf/
SLIDESJAVA-39616	PptxReadException occurs when loading a PPTX file	Bug	https://docs.aspose.com/slides/java/open-presentation/
SLIDESJAVA-39619	Table size is incorrect and shapes are missing when converting ODP to PPTX	Bug	https://docs.aspose.com/slides/java/save-presentation/
SLIDESJAVA-39344	Values in horizontal axes of a chart got changed in Aspose converted pdf	Bug	https://docs.aspose.com/slides/java/convert-powerpoint-to-pdf/
SLIDESJAVA-39627	Null pointer exception occurs on converting PPTX to PDF	Investigation	https://docs.aspose.com/slides/java/convert-powerpoint-to-pdf/

Public API Changes

Added Support for VideoFrame Closed Captions

The Captions class and ICaptions interface have been added. They contain information about the closed captions, including the id, label, and data in WebVTT format.
The CaptionsCollection class and ICaptionsCollection interface have been added for storing a collection of closed captions.
The CaptionTracks property has been added to the IVideoFrame interface and implemented in theVideoFrame class.

The following code sample demonstrates how to insert a new VideoFrame, add captions to it, and save the PowerPoint presentation:

Presentation pres = new Presentation();
try {
    FileInputStream fis = new FileInputStream("video.mp4");
    IVideo video = pres.getVideos().addVideo(fis, LoadingStreamBehavior.ReadStreamAndRelease);
    IVideoFrame videoFrame = pres.getSlides().get_Item(0).getShapes().addVideoFrame(0, 0, 100, 100, video);

    // Adds the new captions track from file
    videoFrame.getCaptionTracks().add("New track", "track.vtt");

    pres.save("video with captions.pptx", SaveFormat.Pptx);
} finally {
    if (pres != null) pres.dispose();
}

This code sample demonstrates how to extract captions from a VideoFrame instance and save them to a file:

Presentation pres = new Presentation("video with captions.pptx");
try {
    for (IShape shape : pres.getSlides().get_Item(0).getShapes())
    {
        if (!(shape instanceof IVideoFrame)) continue;

        IVideoFrame videoFrame = (IVideoFrame) shape;

        for (ICaptions captionTrack : videoFrame.getCaptionTracks())
        {
            // Extracts the captions binary data and saves theme to the file
            FileOutputStream fos = new FileOutputStream(captionTrack.getCaptionId() + ".vtt");
            fos.write(captionTrack.getBinaryData());
            fos.close();
        }
    }
} finally {
    if (pres != null) pres.dispose();
}

The following code sample demonstrates how to remove all captions from a VideoFrame and save the PowerPoint presentation:

Presentation pres = new Presentation("video with captions.pptx");
try {
    IVideoFrame videoFrame = (IVideoFrame) pres.getSlides().get_Item(0).getShapes().get_Item(0);

    // Removes all captions from the VideoFrame
    videoFrame.getCaptionTracks().clear();

    pres.save("video without captions.pptx", SaveFormat.Pptx);
} finally {
    if (pres != null) pres.dispose();
}

Added New Property: IHtml5Options.DisableFontLigatures

The new property, DisableFontLigatures, has been added to the IHtml5Options interface and implemented in the Html5Options class. This property allows you to control text rendering during export by enabling or disabling ligatures.

The following code sample demonstrates how to use the DisableFontLigatures property to disable ligatures during export:

Presentation pres = new Presentation("example.pptx");
try {
    // Configure export options
    Html5Options options = new Html5Options();
    options.setDisableFontLigatures(true); // Disable ligatures in text rendering

    // Export presentation to HTML5 with disabled ligatures
    pres.save("output.html", SaveFormat.Html5, options);
} finally {
    if (pres != null) pres.dispose();
}

Added New Property: ISaveOptions.SkipJavaScriptLinks

The new property, SkipJavaScriptLinks, has been added to the ISaveOptions interface and implemented in the SaveOptions class. This property allows you to skip hyperlinks that contain JavaScript calls when saving a presentation.

The following code samples demonstrate how to save a PPTX presentation without hyperlinks containing JavaScript calls:

Saving to HTML:

Presentation pres = new Presentation("demo.pptx");
try {
    HtmlOptions htmlOptions = new HtmlOptions();
    htmlOptions.setSkipJavaScriptLinks(true);
    pres.save("result_without_JavaScript_links.html", SaveFormat.Html, htmlOptions);
} finally {
    if (pres != null) pres.dispose();
}

Saving to HTML5:

Presentation pres = new Presentation("demo.pptx");
try {
    Html5Options html5Options = new Html5Options();
    html5Options.setSkipJavaScriptLinks(true);
    pres.save("result_without_JavaScript_links.html", SaveFormat.Html5, html5Options);
} finally {
    if (pres != null) pres.dispose();
}

Saving to PDF:

Presentation pres = new Presentation("demo.pptx");
try {
    PdfOptions pdfOptions = new PdfOptions();
    pdfOptions.setSkipJavaScriptLinks(true);
    pres.save("result_without_JavaScript_links.pdf", SaveFormat.Pdf, pdfOptions);
} finally {
    if (pres != null) pres.dispose();
}

Added New Method: ITextFrame.SplitTextByColumns

The new method, SplitTextByColumns, has been added to the ITextFrame interface and implemented in the TextFrame class. This method splits the text content of the TextFrame into an array of strings, where each element corresponds to a separate text column within the frame.

The following code sample demonstrates how to use the SplitTextByColumns method:

Presentation pres = new Presentation("example.pptx");
try {
    // Get the first shape on the slide
    IAutoShape shape = (IAutoShape) pres.getSlides().get_Item(0).getShapes().get_Item(0);
    // Get textFrame
    ITextFrame textFrame = shape.getTextFrame();
    // Split the text frame content into columns
    String[] columnsText = textFrame.splitTextByColumns();
    // Print each column's text to the console
    for (String column : columnsText)
        System.out.println(column);
} finally {
    if (pres != null) pres.dispose();
}

Added New Class: InkActions

The InkActions class and IInkActions interface have been added. They represent graphical elements for ink actions. In this release, serialization, deserialization, and rendering of such elements have been implemented.

Added New Methods: IImage.Save

Two new methods have been added to the IImage interface:

Save(string filename, ImageFormat format, int quality)
Save(Stream stream, ImageFormat format, int quality)

These methods have an additional quality parameter, which accepts values from 0 to 100 and allows controlling the quality of the saved image. This parameter only affects saving in the JPEG format.

The following code sample demonstrates how to save the first image in the presentation collection as a JPEG with varying quality:

Presentation presentation = new Presentation("pres.pptx");
try {
    IImage image = presentation.getImages().get_Item(0).getImage();

    // Saves the first image to the memory stream in JPEG format with quality 80.
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    image.save(baos, ImageFormat.Jpeg, 80);

    // Saves the first image to the file in JPEG format with high quality.
    image.save("image.jpg", ImageFormat.Jpeg, 100);
} finally {
    if (presentation != null) presentation.dispose();
}