diff --git a/src/UglyToad.PdfPig/Content/Letter.cs b/src/UglyToad.PdfPig/Content/Letter.cs
index b3bb10ed..069b3e59 100644
--- a/src/UglyToad.PdfPig/Content/Letter.cs
+++ b/src/UglyToad.PdfPig/Content/Letter.cs
@@ -59,10 +59,15 @@
         /// </summary>
         internal decimal PointSize { get; }
 
+        /// <summary>
+        /// Sequence number of the ShowText operation that printed this letter.
+        /// </summary>
+        public int TextSequence { get; }
+
         /// <summary>
         /// Create a new letter to represent some text drawn by the Tj operator.
         /// </summary>
-        internal Letter(string value, PdfRectangle glyphRectangle, PdfPoint startBaseLine, PdfPoint endBaseLine, decimal width, decimal fontSize, string fontName, decimal pointSize)
+        internal Letter(string value, PdfRectangle glyphRectangle, PdfPoint startBaseLine, PdfPoint endBaseLine, decimal width, decimal fontSize, string fontName, decimal pointSize, int textSequence)
         {
             Value = value;
             GlyphRectangle = glyphRectangle;
@@ -71,6 +76,7 @@
             PointSize = pointSize;
             Width = width;
             StartBaseLine = startBaseLine;
+            TextSequence = textSequence;
             EndBaseLine = endBaseLine;
             TextDirection = GetTextDirection();
         }
diff --git a/src/UglyToad.PdfPig/Graphics/ContentStreamProcessor.cs b/src/UglyToad.PdfPig/Graphics/ContentStreamProcessor.cs
index 6d4d9aa2..4c40a770 100644
--- a/src/UglyToad.PdfPig/Graphics/ContentStreamProcessor.cs
+++ b/src/UglyToad.PdfPig/Graphics/ContentStreamProcessor.cs
@@ -30,6 +30,9 @@
         private Stack<CurrentGraphicsState> graphicsStack = new Stack<CurrentGraphicsState>();
         private IFont activeExtendedGraphicsStateFont = null;
 
+        //a sequence number of ShowText operation to determine whether letters belong to same operation or not (letters that belong to different operations have less changes to belong to same word)
+        private int textSequence = 0;
+
         public TextMatrices TextMatrices { get; } = new TextMatrices();
 
         public TransformationMatrix CurrentTransformationMatrix
@@ -169,7 +172,7 @@
                     .Transform(TextMatrices.TextMatrix
                         .Transform(renderingMatrix.Transform(new PdfRectangle(0, 0, boundingBox.Width, 0))));
 
-                ShowGlyph(font, transformedGlyphBounds, transformedPdfBounds.BottomLeft, transformedPdfBounds.BottomRight, transformedPdfBounds.Width, unicode, fontSize, pointSize);
+                ShowGlyph(font, transformedGlyphBounds, transformedPdfBounds.BottomLeft, transformedPdfBounds.BottomRight, transformedPdfBounds.Width, unicode, fontSize, pointSize, textSequence);
 
                 decimal tx, ty;
                 if (font.IsVertical)
@@ -191,6 +194,8 @@
 
         public void ShowPositionedText(IReadOnlyList<IToken> tokens)
         {
+            textSequence++;
+
             var currentState = GetCurrentState();
 
             var textState = currentState.FontState;
@@ -336,9 +341,9 @@
             TextMatrices.TextMatrix = newMatrix;
         }
 
-        private void ShowGlyph(IFont font, PdfRectangle glyphRectangle, PdfPoint startBaseLine, PdfPoint endBaseLine, decimal width, string unicode, decimal fontSize, decimal pointSize)
+        private void ShowGlyph(IFont font, PdfRectangle glyphRectangle, PdfPoint startBaseLine, PdfPoint endBaseLine, decimal width, string unicode, decimal fontSize, decimal pointSize, int textSequence)
         {
-            var letter = new Letter(unicode, glyphRectangle, startBaseLine, endBaseLine, width, fontSize, font.Name.Data, pointSize);
+            var letter = new Letter(unicode, glyphRectangle, startBaseLine, endBaseLine, width, fontSize, font.Name.Data, pointSize, textSequence);
 
             Letters.Add(letter);
         }
diff --git a/src/UglyToad.PdfPig/Writer/PdfPageBuilder.cs b/src/UglyToad.PdfPig/Writer/PdfPageBuilder.cs
index c1c447dc..193b575d 100644
--- a/src/UglyToad.PdfPig/Writer/PdfPageBuilder.cs
+++ b/src/UglyToad.PdfPig/Writer/PdfPageBuilder.cs
@@ -21,6 +21,10 @@
     {
         private readonly PdfDocumentBuilder documentBuilder;
         private readonly List<IGraphicsStateOperation> operations = new List<IGraphicsStateOperation>();
+
+        //a sequence number of ShowText operation to determine whether letters belong to same operation or not (letters that belong to different operations have less changes to belong to same word)
+        private static int textSequence = 0;
+
         internal IReadOnlyList<IGraphicsStateOperation> Operations => operations;
 
         /// <summary>
@@ -239,6 +243,8 @@
 
             var width = 0m;
 
+            textSequence++;
+
             for (var i = 0; i < text.Length; i++)
             {
                 var c = text[i];
@@ -258,7 +264,7 @@
 
                 var documentSpace = textMatrix.Transform(renderingMatrix.Transform(fontMatrix.Transform(rect)));
 
-                var letter = new Letter(c.ToString(), documentSpace, advanceRect.BottomLeft, advanceRect.BottomRight, width, fontSize, font.Name, fontSize);
+                var letter = new Letter(c.ToString(), documentSpace, advanceRect.BottomLeft, advanceRect.BottomRight, width, fontSize, font.Name, fontSize, textSequence);
                 letters.Add(letter);
 
                 var tx = advanceRect.Width * horizontalScaling;