Thanks for your posting and using Aspose.Cells.
We were able to observe these issues after converting your xlsx file into pdf using the latest version: Aspose.Cells for Java 8.1.1.
We have logged these issues in our database for investigation. We will look into them and fix these issues. Once, these issues are resolved or we have some other update for you, we will let you know asap.
These issues have been logged as
- CELLSJAVA-40902 - Equation characters are rendered as boxes in the output PDF
- CELLSJAVA-40903 - Equation images are not crisp in the output PDF
I have attached the output pdf generated with the following code for a reference.
String filePath = “F:\Shak-Data-RW\Downloads\TestDocumentforPDFRendering.xlsx”;
Workbook workbook = new Workbook(filePath);
workbook.save(filePath + “.out.pdf”);