Card Sorting for Content Strategists

The hardest part of content strategy isn't writing — it's organizing. You can produce excellent content that no one finds because the navigation label is wrong, the category doesn't make sense to users, or the taxonomy was designed by the marketing team using internal jargon.

Card sorting is the content strategist's tool for validating that the organizational structure you're building actually matches how users think. It's faster and more reliable than stakeholder consensus, and it produces data you can defend to clients and leadership.

The Content Strategy Use Cases for Card Sorting

Card sorting applies to content work in several distinct ways:

1. Taxonomy Validation

You've developed a content taxonomy — category names, subcategories, tags, content types. Does it make sense to users, or does it reflect how your team thinks about content?

Run a closed card sort with your taxonomy as the categories and sample content as the cards. If users can place content correctly under your labels, your taxonomy is intuitive. If they can't, you have evidence to revise it before building out the content model.

2. Navigation Label Testing

Is "Resources" or "Learn" a better label for your educational content section? Does "Insights" mean blog posts to your users, or does it sound like data analytics? These label decisions drive findability, and they're guessable but not knowable without user research.

Card sorting lets you test competing label options against each other systematically, using the same content organized under different category names.

3. Blog/Knowledge Base Restructuring

When a content library has grown organically over years, the categories that made sense initially often don't serve a larger content collection. Card sorting reveals which categories users actually recognize and which ones they ignore.

4. Help Center and Documentation Organization

Documentation has a specific navigation challenge: users arrive with urgent, specific questions and need to find answers quickly. Card sorting your help center or documentation site reveals whether your organizational structure aligns with how users think about the problems they're solving.

5. Global Navigation for Content-Heavy Sites

Media sites, educational platforms, and content publishers often struggle with top-level navigation that has grown too broad or too narrow. Card sorting is the foundation for restructuring navigation based on user behavior.

Setting Up a Content Strategy Card Sort

Translating Your Content Inventory to Cards

Most content strategists already have a content audit or inventory. Turn it into card sort input by:

For taxonomy validation: Use actual article titles or content descriptions as cards. These are more realistic than abstract category names — users can tell you where they'd file a real piece of content more accurately than where they'd put an abstract concept.

For navigation label testing: Use your most representative content titles from each category. If you're testing whether "Resources" vs. "Learn" works better for educational content, create cards from your top 20 educational articles. Do the same for other content types.

For documentation/help center: Use common user questions (from your support tickets) as cards, not your article titles. Users think in questions ("How do I cancel my subscription?"), not titles ("Cancellation Process Guide"). Organizing cards as questions reveals how users mentally categorize the problems they're trying to solve, which is more useful than organizing by document titles.

Writing Effective Cards

Avoid internal language: "Product Announcements" means something to your team. To users, it might be "What's New," "News," or "Updates." Write cards in the language your audience uses.

Keep cards scannable: One concept per card, 3–8 words. Card sorting gets cognitively demanding with 50+ items; shorter labels reduce cognitive load.

Include borderline content: Include content items that you're uncertain about. These ambiguous cases will be sorted inconsistently by participants, which gives you the most valuable data — the places where your taxonomy is unclear.

Choosing Open vs. Closed

Use open card sorting when:

• You're building a taxonomy from scratch
• Your current taxonomy was built without user research and you want to see what users would create instead
• You want to discover what language users use to label categories (their category names are often better than yours)

Use closed card sorting when:

• You have a proposed taxonomy and want to validate it
• You're testing competing label options
• You want to confirm that users can correctly place content under your existing structure

For most content strategy projects, run open first and closed second: open card sorting reveals the structure, closed card sorting validates it.

What Content Card Sorts Reveal

Category Names Users Actually Use

The labels participants create in open card sorting are often more accurate than what content strategists devise in workshops. When participants consistently call a category "Tips and Tutorials" instead of your planned "Learning Center," that's signal about which label will drive better findability.

Document the exact words participants use when naming groups. These are your headline data points for label recommendations.

Orphaned Content

Cards that participants consistently sort alone — never grouped with other items — represent content that doesn't fit your taxonomy. These are navigation liabilities: content that exists but lives nowhere. Options include:

• Moving the content to fit an existing category
• Creating a new category (if multiple orphaned items belong together)
• Reconsidering whether the content should exist in its current form

Category Fragmentation

When participants create many small groups rather than a few larger ones, your content may be too granular or too specialized. Users expect to see a manageable number of top-level categories (5–9 is the research-backed sweet spot). If participants create 15+ categories in an open card sort, consider whether your content scope needs to be narrowed.

Blended Categories

Sometimes participants group content from what you treat as separate categories into a single group. "News" and "Blog Posts" might consistently end up together (users don't distinguish them). "Tutorials" and "Documentation" might get merged. These blended groupings reveal where your taxonomy is more granular than users need.

Practical Application: Labeling a Navigation Taxonomy

Scenario: You're redesigning the navigation for a SaaS company's blog and help center. You need to decide on top-level categories.

Your internal taxonomy hypothesis:

• Product Updates
• How-To Guides
• Customer Stories
• Industry Insights
• Developer Documentation

Step 1: Create cards from representative articles across each category (8–10 articles per category = 40–50 total cards).

Step 2: Run an open card sort with 15 users. Ask them to group the articles the way they'd expect to find them on a software company's website.

Step 3: Examine participant-created category names. Common findings in this scenario:

• "Product Updates" may get merged with "What's New" or "Announcements"
• "Industry Insights" may get sorted as either "Blog" or alongside How-To content if it's practical rather than thought-leadership
• Developer documentation consistently sorts separately as a distinct section with its own navigation

Step 4: Run a closed card sort with your refined taxonomy to confirm placement rates reach 70%+ for each category.

Step 5: Present findings as: "Users in our study consistently labeled this category X (not Y), with 73% placing article type A in this section and 68% placing article type B here."

This is the difference between "I recommend this label" and "Users told us this label works."

Connecting Card Sort Data to Content Governance

Card sorting findings should feed into your content governance documentation:

Content model updates: Card sort clusters tell you how to structure your content model. If users consistently group documentation separately from blog content, that separation belongs in your content model, not as an afterthought.

Editorial guidelines: If users placed content incorrectly under a category label in your closed card sort, that's a signal for editorial review. Either the content is miscategorized, or the label needs updating.

Migration decisions: When migrating an existing content library to a new CMS or navigation structure, card sorting validates the migration map before you move thousands of pieces of content.

Ongoing governance: Run small card sorts (15–20 cards, 10 participants) quarterly when your content library grows significantly. Navigation that works for 200 articles may not work for 500.

Card sorting is free for content strategists. No budget approval needed. Start a study at freecardsort.com →