diff --git a/content/templates/functions.md b/content/templates/functions.md
index 417e2cdb2..bee82e21f 100644
--- a/content/templates/functions.md
+++ b/content/templates/functions.md
@@ -356,7 +356,7 @@ e.g.
        {{ .Content }}
     {{ end }}
 
-## Files    
+## Files
 
 ### readDir
 
@@ -372,6 +372,16 @@ Reads a file from disk and converts it into a string. Note that the filename mus
 
  `{{readFile "README.txt"}}` → `"Hugo Rocks!"`
 
+### imageConfig
+Parses the image and returns the height, width and color model.
+
+e.g.
+```
+{{ with (imageConfig "favicon.ico") }}
+favicon.ico: {{.Width}} x {{.Height}}
+{{ end }}
+```
+
 ## Math
 
 <table class="table table-bordered">