Card sorting

Discover how people categorize information


Find out how people think your content should be organized and categorized with our card sorting tool. Card sorting gives you insight into how people conceptualize, group and label ideas, enabling you to make confident, informed information architecture decisions.

Build on data, not assumptions

Don’t build your website structure on guesswork. OptimalSort helps you discover how people expect your content to be organized, giving you detailed insights that aren’t always easily discoverable by just talking to users.

Collect the insights you need quickly and easily

OptimalSort gives you the flexibility to conduct moderated and unmoderated card sorts online. Now, you can collect the data you need, how and when you need it. Plus, it only takes a few minutes to design and launch your study. 

Optimal Workshop Closed Card Sort with OptimalSort

Insights made easy

Don’t spend hours trawling for themes — OptimalSort pulls out useful, usable insights from your card sorting data. Identify common groups at a glance with comprehensive and vibrant visualizations, and use this data to support design changes and recommendations. 

Optimal Workshop Similarity Matrix in OptimalSort

5 tools, infinite possibilities

The Optimal Workshop suite offers up 5 quantitative and qualitative tools to support your user research journey from beginning to end.






Recruit quality participants

Finding the right study participants can be tricky and time-consuming – so leave that to us. With access to over 50 million people worldwide, our recruitment service can connect you with the right participants for your studies.

A single source of truth

All your vital data in one place. The Optimal Workshop suite provides a single source of truth for all of your user insights, as well as enabling you to confidently analyze and share your findings.

Endless opportunities

From testing out a new homepage idea to creating brand new digital experiences; building a checkout flow for an ecommerce site to revolutionizing online banking, our customers use the Optimal Workshop suite for just about anything – and you can too.  

Start card sorting with OptimalSort today

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Learn more about card sorting

Card sorting guide
Card sorting guide

Learn more about card sorting in our 101 guide

Help center
Help center

Learn how to build, run and analyze your OptimalSort studies

Explore a demo study
Explore a demo study

Complete a card sort study as a participant and then analyse results