Card Sorting
What is Card Sorting in Product Design?
Card Sorting is a user research technique used in product design to help organize information and improve the structure of a product's content or features. It involves participants grouping topics or items written on cards into categories that make sense to them, which helps designers understand how users think about and categorize information.
Synonyms: card sorting method, card sorting technique, information grouping, content organization, user card sorting

Why Card Sorting is Important
Card Sorting helps create intuitive and user-friendly information architectures by revealing how real users expect content to be organized. This leads to better navigation, improved user experience, and more effective product design.
How Card Sorting is Used
In a typical card sorting session, participants are given cards with labels representing features, content, or concepts. They then group these cards into categories that feel logical to them and may also name these categories. Designers analyze the results to identify common patterns and use these insights to structure menus, navigation, or content hierarchies.
Examples of Card Sorting
For example, an e-commerce website might use card sorting to organize product categories so shoppers can find items easily. A software app might use it to group features in a way that matches user expectations, making the interface simpler and more intuitive.
Frequently Asked Questions
- What types of card sorting are there? There are open card sorts where participants create their own categories, and closed card sorts where categories are predefined.
- Who should participate in card sorting? Ideally, actual or potential users of the product participate to provide authentic insights.
- Can card sorting be done online? Yes, many tools allow remote card sorting sessions, making it easier to gather diverse user input.
- How many participants are needed? Typically, 15-30 participants provide enough data to identify meaningful patterns.