diff --git a/Dictionaries/en_US_user.xml b/Dictionaries/en_US_user.xml
index 393da92ea..846e824e4 100644
--- a/Dictionaries/en_US_user.xml
+++ b/Dictionaries/en_US_user.xml
@@ -78,6 +78,7 @@
   <word>clanky</word>
   <word>cliché</word>
   <word>clozapine</word>
+  <word>co2</word>
   <word>cobalt</word>
   <word>collywobbles</word>
   <word>colonoscopy</word>
@@ -409,6 +410,7 @@
   <word>ununquadium</word>
   <word>ununseptium</word>
   <word>ununtrium</word>
+  <word>uplink</word>
   <word>uranium</word>
   <word>vaccinologist</word>
   <word>vanadium</word>
diff --git a/Dictionaries/eng_OCRFixReplaceList.xml b/Dictionaries/eng_OCRFixReplaceList.xml
index d82b7cb5e..0bbc80fce 100644
--- a/Dictionaries/eng_OCRFixReplaceList.xml
+++ b/Dictionaries/eng_OCRFixReplaceList.xml
@@ -371,6 +371,7 @@
     <Word from="bythe" to="by the" />
     <Word from="byyourself" to="by yourself" />
     <Word from="C/latter/'/7g" to="Chattering" />
+    <Word from="C02" to="CO2" />
     <Word from="ca///ng" to="calling" />
     <Word from="ca/I" to="call" />
     <Word from="cal/ed" to="called" />
@@ -805,6 +806,7 @@
     <Word from="H0ger" to="Roger" />
     <Word from="H0we·ver" to="However" />
     <Word from="ha/f" to="half" />
+    <Word from="hadjammed" to="had jammed" />
     <Word from="hadjust" to="had just" />
     <Word from="Hadnt" to="Hadn't" />
     <Word from="hadnt" to="hadn't" />
diff --git a/Ocr/Latin.nocr b/Ocr/Latin.nocr
index 3f8962d08..d28fd9358 100644
Binary files a/Ocr/Latin.nocr and b/Ocr/Latin.nocr differ
diff --git a/libse/NikseBitmap.cs b/libse/NikseBitmap.cs
index 1572713c6..692d6b020 100644
--- a/libse/NikseBitmap.cs
+++ b/libse/NikseBitmap.cs
@@ -1356,6 +1356,33 @@ namespace Nikse.SubtitleEdit.Core
             return true;
         }
 
+        public int GetNonTransparentHeight()
+        {
+            var startY = 0;
+            int transparentBottomPixels = 0;
+            for (int y = 0; y < Height; y++)
+            {
+                var isLineTransparent = IsLineTransparent(y);
+                if (startY == y && !isLineTransparent)
+                {
+                    startY++;
+                    continue;
+                }
+
+                if (isLineTransparent)
+                {
+                    transparentBottomPixels++;
+                }
+                else
+                {
+                    transparentBottomPixels = 0;
+                }
+            }
+
+            return startY - transparentBottomPixels;
+        }
+
+
         public void EnsureEvenLines(Color fillColor)
         {
             if (Width % 2 == 0 && Height % 2 == 0)