Hi Anatoly,
Thank you very much for your update.
For your reference, we have updated the details that has been mentioned in the link (i.e.,
http://www.syncfusion.com/support/directtrac/detailsupdate/77878)Currently in Essential XlsIO we don’t have support for converting the chart to an image, so rendering of chart is not supported in Excel to HTML and Excel to Pdf . We have already logged this as a feature request and forwarded to the development team for further process.
FYI: we don’t have immediate plans to implement this feature and we will get back to you once the feature has been implemented .
Please let us know if you require any further clarifications.
Thanks,
Pauline Bosco.