diff --git a/www/index.php b/www/index.php
index bb3bc3b2..1cdc99d7 100644
--- a/www/index.php
+++ b/www/index.php
@@ -311,8 +311,21 @@
width (required)
The width in pixels required to display the HTML.
+ min_width (optional)
+ The minimum width in pixels required to display the HTML, if it's any lower the content will be cut off and not render properly.
+
+ max_width (optional)
+ The maximum width in pixels to display the HTML without blank whitespace occuring.
+
height (required)
The height in pixels required to display the HTML.
+
+ min_height (optional)
+ The minimum height in pixels required to display the HTML, it it's any lower the content will be cut off and not render properly.
+
+ max_height (optional)
+ The maximum height in pixels required to display the HTML without blank whitespace occuring.
+
Responses of this type must obey the maxwidth and maxheight request parameters.