diff --git a/EnvelopeGenerator.Web/Models/Annotation.cs b/EnvelopeGenerator.Web/Models/Annotation.cs
index 448365ed..fd54b68f 100644
--- a/EnvelopeGenerator.Web/Models/Annotation.cs
+++ b/EnvelopeGenerator.Web/Models/Annotation.cs
@@ -30,6 +30,9 @@ public record Annotation
         init => _marginLeft = value;
     }
 
+    [JsonIgnore]
+    public double MarginLeftRatio { get; init; } = 1;
+
     [JsonIgnore]
     public double MarginTop
     {
@@ -37,17 +40,26 @@ public record Annotation
         init => _marginTop = value;
     }
 
+    [JsonIgnore]
+    public double MarginTopRatio { get; init; } = 1;
+
     public double Width
     {
         get => _width;
         init => _width = value;
     }
 
+    [JsonIgnore]
+    public double WidthRatio { get; init; } = 1;
+
     public double Height
     {
         get => _height;
         init => _height = value;
     }
+
+    [JsonIgnore]
+    public double HeightRatio { get; init; } = 1;
     #endregion
 
     #region Position
@@ -79,16 +91,16 @@ public record Annotation
         {
             // To set default value, annotation must have default (0) value but default must has non-default value
             if (_marginLeft == default && value.MarginLeft != default)
-                _marginLeft = value.MarginLeft;
+                _marginLeft = value.MarginLeft * MarginLeftRatio;
 
             if (_marginTop == default && value.MarginTop != default)
-                _marginTop = value.MarginTop;
+                _marginTop = value.MarginTop * MarginTopRatio;
 
             if (_width == default && value.Width != default)
-                _width = value.Width;
+                _width = value.Width * WidthRatio;
 
             if (_height == default && value.Height != default)
-                _height = value.Height;
+                _height = value.Height * HeightRatio;
         }
     }
 };
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