PowerPoint files, on .NET Core.

using Aspose.Slides;
using Aspose.Slides.Export;

using var presentation = new Presentation("quarterly-review.pptx");

presentation.Save("review.pdf", SaveFormat.Pdf);
presentation.Save("review.html", SaveFormat.Html);
presentation.Save("review.tiff", SaveFormat.Tiff);

using System;
using Aspose.Slides;
using Aspose.Slides.Export;

// Once at startup on Linux or macOS, for the net6.0 asset.
AppContext.SetSwitch("System.Drawing.EnableUnixSupport", true);

// A slim image ships almost no fonts, so point the renderer at the ones you deploy.
FontsLoader.LoadExternalFonts(new[] { "/app/fonts" });

using (var presentation = new Presentation("/data/deck.pptx"))
{
    presentation.Save("/data/deck.pdf", SaveFormat.Pdf);
}

FontsLoader.ClearCache();

using Aspose.Slides;

using var presentation = new Presentation("deck.pptx");

for (int index = 0; index < presentation.Slides.Count; index++)
{
    ISlide slide = presentation.Slides[index];

    using IImage image = slide.GetImage(2f, 2f);
    image.Save($"slide-{index + 1}.png", ImageFormat.Png);
}

using Aspose.Slides;
using Aspose.Slides.Export;

var builder = WebApplication.CreateBuilder(args);
var app = builder.Build();

app.MapPost("/convert", async (IFormFile file) =>
{
    await using var upload = file.OpenReadStream();
    using var presentation = new Presentation(upload);

    var pdf = new MemoryStream();
    presentation.Save(pdf, SaveFormat.Pdf);
    pdf.Position = 0;

    return Results.File(pdf, "application/pdf", "converted.pdf");
}).DisableAntiforgery();

app.Run();

using System.IO;
using System.Reflection;
using Aspose.Slides;

// Once per process, before the first Presentation is constructed.
using Stream licenseStream = Assembly
    .GetExecutingAssembly()
    .GetManifestResourceStream("MyApp.Aspose.Slides.NET.lic");

var license = new License();
license.SetLicense(licenseStream);