I've been tasked with coming up with a way to quantify / asses the overall useability / user experience of our web application on a per-page basis.
What tools and methods do you use to achieve those standards and metrics?
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Since a user rarely experiences just a page of your site by itself, I'd say a per-page evaluation is of questionable value. All that said, 'ux evaluation' can be done a number of ways. User testing, user surveys, heuristic evaluation, etc. For starters, I'd start with a heuristic evaluation.
You don't do an 'overall' analysis - rather, you identify the key user behaviours, then measure how often they're happening / being followed to completion using user tests and analytics.
This allows you to value the state of an interface in directly business-oriented terms and define measurable, specific tasks to trial in user testing. More importantly, it also allows you to get support for actioning your findings - if you can't quantify how a bad UI is harming business goals, how can you expect the business to fund further development?
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