Thank you for getting back to us.
We have worked with the data shared by you and have been able to observe the issue of pages splitting when rendering to images. It has been logged with ticket ID HTMLNET-1354 in our issue management system. The issue ID has been linked with this thread so that you will receive notification as soon as the issue is resolved.
Moreover, shared code snippet can be used in your code as under:
Aspose.Html.Rendering.Image.ImageRenderingOptions pdf_options = new Aspose.Html.Rendering.Image.ImageRenderingOptions();
pdf_options.PageSetup.AnyPage = new Aspose.Html.Drawing.Page(new Aspose.Html.Drawing.Size(Unit.FromMillimeters(210), Unit.FromMillimeters(297)))
Top = Aspose.Html.Drawing.Unit.FromPoints(62),
Left = Aspose.Html.Drawing.Unit.FromPoints(90),
Right = Aspose.Html.Drawing.Unit.FromPoints(90),
Bottom = Aspose.Html.Drawing.Unit.FromPoints(62)
We hope this will be helpful.