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Text Is Displayed Incorrectly when Exporting PPT to PDF and HTML

Good day,

we noticed and error when exporting a Power Point presentation to HTML or PDF.

When exporting the presentation to HTML the text is displayed backwards.
When exporting the presentation to PDF the text is in correct order but in a wrong position.
Please see the screenshots.
image.png (6.0 KB)

image.png (8.4 KB)

image.png (13.3 KB)

For reproduction purposes I also have attached you the original files and the output files generated with the following example code:

        static void Main(string[] args)
            var lic = new License();

            var presentation = new Presentation(@"S:\tmp\in.ppt");
            presentation.Save(@"S:\tmp\out.html", SaveFormat.Html);
            presentation.Save(@"S:\tmp\out.pdf", SaveFormat.Pdf);

files.zip (270.1 KB)

Thanks for your help.

Thank you for reporting the issue.

I’ve reproduced the problem with exporting the text to PDF and HTML and added tickets with ID SLIDESNET-43317 (exporting to PDF) and SLIDESNET-43318 (exporting to HTML) to our issue tracking system. We apologize for any inconvenience. Our development team will investigate the cases. You will be notified when the issues are resolved.

It would be great if you could share the following additional information:

  • OS version where the code was executed
  • .NET target platform in your app

We will then also test a solution in an environment similar to yours.


thanks for your fast response. I have no specific information about the system of the customer, but I will assume it´s current Windows server OS.

On my local development system, on which I was able to reproduce the issue, I am running Windows 10:
image.png (4.3 KB)

The target framework in our project configuration is the .Net Framework 4.6.1.

Thank you for the information. I’ve forwarded it to our developers.

The issues you have found earlier (filed as SLIDESNET-43318,SLIDESNET-43317) have been fixed in Aspose.Slides for .NET 22.9 (ZIP, MSI).
You can check all fixes on the Release Notes page.
You can also find the latest version of our library on the Product Download page.