Understand how people group and label information
Structure your content in a way that makes sense to the people who use it. Card sorting uncovers your users’ mental models, so you can create an information architecture that works.
Save time with automated analysis
Get your time back, OptimalSort helps you find themes in your card sort data in minutes. Quickly gather actionable insights using seven different analysis methods including Dendrograms and the Similarity Matrix. Identify common groups at a glance with comprehensive and vibrant visualizations.

Provide the best participant experience even when you’re not there
OptimalSort delivers your participants an intuitive, enjoyable online card sort experience. Your unmoderated card sorts run in the background, while you focus on other work. Or use OptimalSort in a moderated setting in person or online, the choice is yours.

Make confident design decisions based on data not assumptions
OptimalSort removes guesswork and unvalidated opinions by providing you with detailed insights straight from your users. Share the results with stakeholders and team members to get everyone on the same page and moving in the right direction.

Start card sorting with OptimalSort today
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Use card sorting to build better digital experiences
OptimalSort enables you to build websites, intranets and apps that make sense to your users. Gain insight into how people group and label ideas and make data driven changes and recommendations.
Our card sorting tool helps you to:
- Build your website based on data, not assumptions
- Collect the insights you need quickly and easily
- Share your insights with the people who need them

Trusted by more than 420,000 customers globally





When you should use card sorting
It’s best to do a card sort when you want to answer a specific, information-related question. For example:
- Building the structure for a new website
- Working out where a new category should sit on a website
- Figuring out what should go on the homepage
Card sorting is most useful when you’ve got the information you need to organize, but you’re just not sure exactly how to organize it.

Card sorting tips and tricks
Even more powerful with tree testing
Once you understand more about how your users categorize and label information it’s time to use Treejack, our tree testing tool. A tree test will allow you to test the proposed site structure, categorization and labels and understand where and why people get lost in your content.
The Optimal Workshop suite offers five quantitative and qualitative tools to support your user research journey from beginning to end.
Start card sorting with OptimalSort today
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