Abstract: The invention is a portable, lightweight, utility/tool tray designed to safely and reliably hold tools and supplies on a general use extension ladder. The utility/tool tray is a sturdy, self contained device whose base area will have an area for tool storage located in front and a larger, general area in the rear for miscellaneous items, including, but not limited to, a typical one gallon container of paint. The utility/tool tray device is designed to be easily hung on two vertically adjacent steps of the ladder so when in use, the base area of the device remains essentially horizontal and provides for the support of, as well as easy access to, the various tools and supplies of the user, while the user is performing work on the ladder.