diff --git a/aspnet-core/Chart/Appearance.md b/aspnet-core/Chart/Appearance.md
index db3ae137..d3a075b0 100644
--- a/aspnet-core/Chart/Appearance.md
+++ b/aspnet-core/Chart/Appearance.md
@@ -24,7 +24,7 @@ The chart displays different series in different colors, by default. You can cus
 {% endhighlight %}
 
 
-![](Appearance_images/Appearance_img1.png)
+![Custom color palette in ASP.NET Core Chart](appearance_images/aspnetcore-chart-custom-color-palette.png)
 
 
 N> The color palette is applied to the points in accumulation type of series
@@ -53,7 +53,7 @@ You can set the desired theme by using the **Theme** property. The default theme
 
 {% endhighlight %}
 
-![](Appearance_images/Appearance_img2.png)
+![Themes in ASP.NET Core Chart](appearance_images/aspnetcore-chart-themes.png)
 
 
 ## Point level customization
@@ -74,7 +74,7 @@ Marker, data label, and fill color of each point in a series can be customized i
 
 {% endhighlight %}
 
-![](Appearance_images/Appearance_img3.png)
+![Point level customization in ASP.NET Core Chart](appearance_images/aspnetcore-chart-point-level-customization.png)
 
 
 ## Series border customization
@@ -94,7 +94,7 @@ To customize the series border color, width, and dash array, use **Series.Border
 
 {% endhighlight %}
 
-![](Appearance_images/Appearance_img4.png)
+![Series border customization in ASP.NET Core Chart](appearance_images/aspnetcore-chart-series-border-customization.png)
 
 
 ## Chart area customization
@@ -111,7 +111,7 @@ The chart background can be customized by using the **Background** property. To
 
 {% endhighlight %} 
 
-![](Appearance_images/Appearance_img5.png)
+![Customize chart background in ASP.NET Core Chart](appearance_images/aspnetcore-chart-customization-background.png)
 
 
 **Chart Margin**
@@ -127,7 +127,7 @@ The chart background can be customized by using the **Background** property. To
 
 {% endhighlight %} 
 
-![](Appearance_images/Appearance_img6.png)
+![Chart margin in ASP.NET Core](appearance_images/aspnetcore-chart-margin.png)
 
 
 **Setting background image**
@@ -142,7 +142,7 @@ Background image can be added to the chart by using the **BackGroundImageUrl** p
 
 {% endhighlight %} 
 
-![](Appearance_images/Appearance_img7.png)
+![Setting background image in ASP.NET Core Chart](appearance_images/aspnetcore-chart-setting-background-image.png)
 
 
 **Chart area background**
@@ -160,7 +160,7 @@ The chart area background can be customized by using the **Background** property
 
 {% endhighlight %} 
 
-![](Appearance_images/Appearance_img8.png)
+![Chart area background in ASP.NET Core](appearance_images/aspnetcore-chart-area-background.png)
 
 
 ### Customize chart area grid bands
@@ -178,7 +178,7 @@ You can provide different color for alternate grid's rows and columns formed by
 
 {% endhighlight %} 
 
-![](Appearance_images/Appearance_img9.png)
+![Customize chart area grid bands in ASP.NET Core Chart](appearance_images/aspnetcore-chart-customize-chart-area-grid-bands.png)
 
 
 ### Animation
diff --git a/aspnet-core/Chart/Appearance_images/Appearance_img8.png b/aspnet-core/Chart/appearance_images/aspnetcore-chart-area-background.png
similarity index 100%
rename from aspnet-core/Chart/Appearance_images/Appearance_img8.png
rename to aspnet-core/Chart/appearance_images/aspnetcore-chart-area-background.png
diff --git a/aspnet-core/Chart/Appearance_images/Appearance_img1.png b/aspnet-core/Chart/appearance_images/aspnetcore-chart-custom-color-palette.png
similarity index 100%
rename from aspnet-core/Chart/Appearance_images/Appearance_img1.png
rename to aspnet-core/Chart/appearance_images/aspnetcore-chart-custom-color-palette.png
diff --git a/aspnet-core/Chart/Appearance_images/Appearance_img5.png b/aspnet-core/Chart/appearance_images/aspnetcore-chart-customization-background.png
similarity index 100%
rename from aspnet-core/Chart/Appearance_images/Appearance_img5.png
rename to aspnet-core/Chart/appearance_images/aspnetcore-chart-customization-background.png
diff --git a/aspnet-core/Chart/Appearance_images/Appearance_img9.png b/aspnet-core/Chart/appearance_images/aspnetcore-chart-customize-chart-area-grid-bands.png
similarity index 100%
rename from aspnet-core/Chart/Appearance_images/Appearance_img9.png
rename to aspnet-core/Chart/appearance_images/aspnetcore-chart-customize-chart-area-grid-bands.png
diff --git a/aspnet-core/Chart/Appearance_images/Appearance_img6.png b/aspnet-core/Chart/appearance_images/aspnetcore-chart-margin.png
similarity index 100%
rename from aspnet-core/Chart/Appearance_images/Appearance_img6.png
rename to aspnet-core/Chart/appearance_images/aspnetcore-chart-margin.png
diff --git a/aspnet-core/Chart/Appearance_images/Appearance_img3.png b/aspnet-core/Chart/appearance_images/aspnetcore-chart-point-level-customization.png
similarity index 100%
rename from aspnet-core/Chart/Appearance_images/Appearance_img3.png
rename to aspnet-core/Chart/appearance_images/aspnetcore-chart-point-level-customization.png
diff --git a/aspnet-core/Chart/Appearance_images/Appearance_img4.png b/aspnet-core/Chart/appearance_images/aspnetcore-chart-series-border-customization.png
similarity index 100%
rename from aspnet-core/Chart/Appearance_images/Appearance_img4.png
rename to aspnet-core/Chart/appearance_images/aspnetcore-chart-series-border-customization.png
diff --git a/aspnet-core/Chart/Appearance_images/Appearance_img7.png b/aspnet-core/Chart/appearance_images/aspnetcore-chart-setting-background-image.png
similarity index 100%
rename from aspnet-core/Chart/Appearance_images/Appearance_img7.png
rename to aspnet-core/Chart/appearance_images/aspnetcore-chart-setting-background-image.png
diff --git a/aspnet-core/Chart/Appearance_images/Appearance_img2.png b/aspnet-core/Chart/appearance_images/aspnetcore-chart-themes.png
similarity index 100%
rename from aspnet-core/Chart/Appearance_images/Appearance_img2.png
rename to aspnet-core/Chart/appearance_images/aspnetcore-chart-themes.png