Thanks for your interest in Aspose.Slides.
Please share your presentation file for investigation purpose so that we can help you in detail.
There is no issue with GetThumbnail method, Please use the latest version of Aspose.Slides for .NET 5.2.0. If you are unable to attach your presentation file then you can email me by clicking contact button.
please see attached.
I do not understand what you mean by there is no issue. I began my testing on the latest download from the aspose site (downloaded at the start of the week).
Please try to get thumbnail and if you could send me your output,
I have tested the issue shared by you and I am able to reproduce the same problem. An issue with ID SLIDESNET-16166 already
exists in our issue tracking system. This thread has also been linked
with the same issue, so that you may be automatically notified, once
the issue is resolved
We apologize for your inconvenience.
The issues you have found earlier (filed as 16166) have been fixed in this update.
This message was posted using Notification2Forum from Downloads module by aspose.notifier.
This issue still happens with aspose 6.0.0.
I have high dimension slides and all images, fonts, etc. appear a little blur.