diff --git a/OpenXmlPowerTools/FormattingAssembler.cs b/OpenXmlPowerTools/FormattingAssembler.cs
index 9cb85d92..ed5db85a 100644
--- a/OpenXmlPowerTools/FormattingAssembler.cs
+++ b/OpenXmlPowerTools/FormattingAssembler.cs
@@ -2014,8 +2014,8 @@ private static IEnumerable<XElement> ParaStyleParaPropsStack(XDocument stylesXDo
             while (localParaStyleName != null)
             {
                 XElement paraStyle = stylesXDoc.Root.Elements(W.style).FirstOrDefault(s =>
-                    s.Attribute(W.type).Value == "paragraph" &&
-                    s.Attribute(W.styleId).Value == localParaStyleName);
+                    s.Attribute(W.type)?.Value == "paragraph" &&
+                    s.Attribute(W.styleId)?.Value == localParaStyleName);
                 if (paraStyle == null)
                 {
                     yield break;
diff --git a/OpenXmlPowerTools/WmlToHtmlConverter.cs b/OpenXmlPowerTools/WmlToHtmlConverter.cs
index 8c908cfd..19a870ef 100644
--- a/OpenXmlPowerTools/WmlToHtmlConverter.cs
+++ b/OpenXmlPowerTools/WmlToHtmlConverter.cs
@@ -8,6 +8,7 @@
 using System.Globalization;
 using System.Linq;
 using System.Text;
+using System.Text.RegularExpressions;
 using System.Xml.Linq;
 using DocumentFormat.OpenXml.Packaging;
 
@@ -1520,9 +1521,20 @@ private static Dictionary<string, string> DefineRunStyle(XElement run)
         private static decimal? GetFontSize(string languageType, XElement rPr)
         {
             if (rPr == null) return null;
-            return languageType == "bidi"
-                ? (decimal?) rPr.Elements(W.szCs).Attributes(W.val).FirstOrDefault()
-                : (decimal?) rPr.Elements(W.sz).Attributes(W.val).FirstOrDefault();
+            var strVal = languageType == "bidi"
+                ? rPr.Elements(W.szCs).Attributes(W.val).FirstOrDefault()?.Value
+                : rPr.Elements(W.sz).Attributes(W.val).FirstOrDefault()?.Value;
+
+            if (string.IsNullOrEmpty(strVal))
+            {
+                return null;
+            }
+
+            //if size is set as pt we should multiply it to compensate future division by 2
+            var multiplicator = strVal.ToLower().Contains("pt") ? 2m : 1m;
+
+            strVal = Regex.Replace(strVal, @"[^\d\.,]", "").Replace(",", ".");
+            return decimal.TryParse(strVal, NumberStyles.Any, CultureInfo.InvariantCulture, out var parsed) ? (decimal?) multiplicator * parsed : null;
         }
 
         private static void DetermineRunMarks(XElement run, XElement rPr, Dictionary<string, string> style, out XEntity runStartMark, out XEntity runEndMark)