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If you aren’t in the know- Audio description (often called verbal description) can be thought of as a medium equivalent to open and closed captioning, only for audiences that prefer information in acoustic rather than visual forms. In some cases, that involves the simple verbalization of a transcript (as in text-to-voice translation), but what we mostly are concerned with here is the more complex audiovisual translation of visual into audible material. For example, how would you describe an Ansel Adams photograph of a scene within Yellowstone National Park to a person who cannot see, or has low vision, or has difficulty interpreting print materials, or simply prefers information in audible forms? Those varied audiences (including people who are blind, with low-vision, print dyslexic, and audio-oriented) deserve full access to public discourse, and this project has been created to serve them, under the core principles of Universal Design.

In deep collaboration with the National Park Service, we sought out how parks of varying sizes and features with a wide array of visitors, would want to use a tool to help convert their existing site brochures into a mobile app specifically designed for the audio described format. With that information, we were able to create a custom workflow that works for a very diverse set of needs.

Utilizing Laravel, PhoneGap Build, automatic deployment with GitHub, usability testing with real park rangers, and a whole lot of planning, we worked out the strategy to get there.


We have actively been working on this project since 2014. During that time in conjunction with the Naitonal Park Service we have completed the audio description for 53 national parks. In addition, the UniDescription project has received funding from Google and collaborated heavily with the American Council of the Blind.

Here are some third party links about UniDescription:

Honolulu Magazine feature about UniDescription in March, 2018.

The UniDescription Project: Examining Audio Description Through Empirical and Experimental Measures

Fresno Chapter of the ACB Tests UniDescription App in Yosemite National Park

University of Hawaii News – Helping California national parks become more accessible for visually impaired