We're sorry Aspose doesn't work properply without JavaScript enabled.

Free Support Forum - aspose.com

PPTX to PDF: Textbox with Soft Edges appear Dark (Java)


Textboxes that have Fill, Shadow and ‘Soft Edges’ formats appear with a dark background when converted to PDF.

This behavior can be seen in the latest Aspose Slides for Java version 20.2, the attached “DarkShading.pptx” file and the following Java code:

final String pptxFile = [PATH] + "DarkShading.pptx";
final String pdfFile = pptxFile.replace(".pptx", ".pdf");


Presentation ppt = new Presentation(pptxFile);
ppt.save(pdfFile, SaveFormat.Pdf);

System.out.println("Saved PDF File: " + pdfFile);

Specifically, the culprit seems to be the ‘Soft Edges’ format. The PPTX has two almost identically formatted textboxes. However, one does not have the ‘Soft Edges’ format, the other does. If you look at the generated PDF, the textbox with the ‘Soft Edges’ format is completely dark (and its text is unreadable).

I should also mention that this applies to all Shapes - not just textboxes. So any Shape with Fill, Shadow and ‘Soft Edges’ format is subject to this issue.

Environment Details:

  • Aspose Slides for Java 20.2
  • Java version 1.8.0_211
  • Windows 10 OS (but also reproducible under Linux).

File description in DarkShading.zip (108.6 KB) Attachment:

  • DarkShading.pptx: Presentation to be converted to PDF.
  • DarkShading.pdf: PDF file generated from the code above on our environment
  • FormatShapeSettings.png: Screen shot of Shape Effects settings for textbox that becomes dark in the PDF.

Thank you!


I have observed the issue shared by you. An issue with ID SLIDESJAVA-38068 has been created in our issue tracking system to further investigate and resolve the issue. This thread has been linked with the issue so that you may be notified once the issue will be fixed.

The issues you have found earlier (filed as SLIDESJAVA-38068) have been fixed in this update.

Thank you @mudassir.fayyaz !
We tested this under Aspose Slides for Java version 20.3 and the PDF appears as expected.


Thank you very much for your positive feedback.