Local properties are not exported to HTML when style is applied over document element (paragraphs, spans, tables) in case the HtmlExportSettings.StyleExportMode is set to Inline and HtmlExportSettings.StylesRepositoryExportMode is ExportStylesAsCssClasses (which is the default value). Workaround: Set HtmlExportSettings.StylesRepositoryExportMode to DontExportStyles. This way properties are exported as local properties. Steps to reproduce: - Using the Styles dialog, create new "character" style. - Apply the style over a span with a text. - Set some local properties to the span - font size or fore color. - Set HtmlExportSettings.StylesExportMode = StylesExportMode.Inline - Set HtmlExportSettings.StyleRepositoryExportMode = StyleRepositoryExportMode.ExportStylesAsCssClasses - Export to HTML. Expected: Both style and local properties are exported. Actual: Only the style will be exported.