Overview
Tabs are used to organize related content into separate, clearly defined categories that learners can quickly switch between without leaving the page. They are most effective when presenting parallel content, such as different perspectives, scenarios, resources, or audience-specific information, that learners may need to compare or access selectively. Tabs help reduce visual clutter while maintaining a clear and efficient learning experience.
Common Pitfalls to Avoid
- Using long or overly descriptive tab titles
- Placing deadlines or due dates inside tabs
- Using tabs for step‑by‑step instructions
- Nesting accordions inside tabs
- Nesting tabs inside other tabs
- Using tabs for very short content
[Example]
Water Activity and Food Safety
Microorganisms require water to grow, reproduce, and carry out metabolic processes. Because of this, the amount of water available within a food product is one of the most important factors influencing food safety and shelf stability.
However, food scientists do not typically evaluate risk based solely on a product’s moisture content. Two foods may contain similar amounts of water while exhibiting very different levels of microbial growth. The key difference lies in how much of that water is available for microorganisms to use.
To better understand this relationship, food scientists measure water activity (aw). Water activity is a measure of the amount of unbound water available to support microbial growth, chemical reactions, and other processes that can affect food quality.
Foods with high water activity generally support microbial growth more readily than foods with lower water activity. As a result, water activity is often used to predict product stability and guide decisions related to formulation, processing, packaging, and storage.
For example, fresh fruits, vegetables, and meats typically have high water activity values and require refrigeration or other preservation methods to limit microbial growth. In contrast, products such as crackers, powdered milk, and dried pasta have lower water activity values and can often be stored safely at room temperature for extended periods.
While the concept itself is relatively straightforward, applying water activity principles in commercial food production often involves balancing food safety, product quality, manufacturing constraints, and consumer expectations.
Water Activity in Practice
Food scientists encounter water activity challenges across a wide range of products and production environments. The following industry scenarios illustrate how the same scientific principle can lead to very different decisions depending on the product, consumer expectations, and business goals.
Beef Jerky Production
A manufacturer of premium beef jerky begins receiving customer complaints regarding mold growth before the product’s stated expiration date. Initial investigations reveal that moisture content measurements consistently fall within established specifications, leading quality assurance personnel to question why spoilage continues to occur.
Further analysis reveals that variations in airflow during the drying process create inconsistencies in water activity throughout individual batches. Although overall moisture content appears acceptable, certain portions of the product retain enough available water to support microbial growth during storage.
The food science team evaluates multiple corrective actions, including modifications to drying times, changes in equipment calibration procedures, and enhanced monitoring throughout production. After implementing process improvements, the company significantly reduces spoilage incidents without altering the texture consumers expect from the product.
The investigation demonstrates why water activity often provides more meaningful information than moisture content alone when evaluating microbial risk.
Soft-Baked Cookie Development
A bakery is developing a packaged soft-baked cookie intended to remain fresh on store shelves for several months. Early prototypes meet food safety requirements but gradually lose their soft texture during storage, becoming firm and brittle over time.
Product developers recognize that reducing water activity can improve microbial stability, but lowering it too aggressively may compromise the eating experience consumers associate with a soft cookie.
The development team experiments with ingredient substitutions, humectants, and packaging materials designed to manage moisture migration throughout storage. Their goal is not simply to maximize shelf life but to balance safety, texture, flavor, and overall product quality.
This scenario highlights a common challenge in food science: the safest solution is not always the most desirable solution from a consumer perspective. Successful product development often requires balancing multiple objectives simultaneously.
Emergency Food Aid Distribution
An international humanitarian organization distributes shelf-stable food products to regions affected by natural disasters and infrastructure disruptions. In many cases, products may spend weeks in warehouses, shipping containers, or temporary storage facilities where temperature and humidity fluctuate significantly.
Food scientists working with the organization must consider how environmental conditions influence product stability throughout the supply chain. Products that remain stable under controlled conditions may experience quality degradation when exposed to elevated temperatures and humidity for extended periods.
When evaluating potential formulations, scientists consider water activity alongside factors such as packaging durability, transportation requirements, production costs, and consumer acceptance.
The challenge extends beyond laboratory measurements. Decisions related to water activity can directly influence the ability of food products to remain safe and usable in situations where reliable refrigeration and storage conditions are unavailable.
Semi-Moist Pet Food Manufacturing
A pet food manufacturer investigates elevated microbial counts discovered during routine quality testing of a semi-moist product line. Production records indicate that sanitation procedures, ingredient sourcing practices, and thermal processing controls all meet established standards.
Unlike dry kibble products, semi-moist foods intentionally retain additional moisture to improve texture and palatability. This creates a narrower margin for controlling microbial growth and places greater importance on maintaining consistent water activity levels.
Food scientists analyze formulation data and discover that natural variation in ingredient composition produces larger-than-expected fluctuations in water activity between production lots. Although these differences appear small, they significantly affect microbial stability during storage.
The company responds by tightening ingredient specifications, increasing analytical testing, and refining formulation controls. The investigation reinforces the role of water activity as a critical quality attribute that must be monitored throughout production rather than evaluated only after a product is manufactured.
Measuring Water Activity
Food manufacturers routinely measure water activity during product development and production to assess microbial risk and verify product stability.
Because water activity reflects the amount of water available for microbial growth, it can help identify potential issues before visible signs of spoilage occur. This makes it a valuable tool for monitoring product quality throughout the manufacturing process.
However, water activity is only one factor that influences food safety. Food scientists must also consider variables such as pH, storage conditions, packaging systems, and the types of microorganisms likely to be present.
Together, these factors help determine whether a product will remain safe and stable throughout its intended shelf life.
Controlling Water Activity
Food manufacturers use a variety of strategies to reduce water activity and limit microbial growth. Common approaches include drying, freeze-drying, salt addition, sugar concentration, and ingredient reformulation.
Selecting an appropriate strategy often involves tradeoffs. While lowering water activity can improve stability, it may also affect a product’s flavor, texture, appearance, or overall consumer appeal.
As a result, food scientists must balance food safety goals with quality expectations when developing and manufacturing food products.
CDD Tag
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Guidelines
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Use Tabs to Organize Parallel Content
Tabs work best when presenting related content categories that learners may want to compare or access selectively. Examples include different perspectives, scenarios, case studies, audience-specific information, or resource types.
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Use Tabs to Reduce Repetition
When multiple content sections share a similar structure but contain different information, tabs can reduce scrolling and improve scanability without requiring learners to navigate away from the page.
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Use Tabs for Audience-Specific Content
Tabs are effective when different learners need access to different versions of the same information, such as role-based guidance, software-specific instructions, or program-specific requirements.
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Tabs should include at least two sections to establish a clear visual structure and justify the use of tabbed navigation. From a UX perspective, a single tab introduces unnecessary interaction without improving content organization and may confuse users who expect multiple selectable options. Using at least two tabs aligns with common user patterns, improves content scanability, and enhances discoverability by making the tabbed layout purposeful and intuitive.
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Create Short Tab Titles (<50 characters)
Short titles help users quickly scan and navigate content, especially when multiple tabs are present. Concise labels reduce cognitive load and align with core UX principles, such as “recognition over recall” and minimalist design. Keeping titles under 50 characters improves readability, supports accessibility, especially on smaller screens or with assistive technologies, and ensures a cleaner, more efficient interface. Clear and brief tab titles make it easier for all users to find what they need without distraction.
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Include a Title in Tab Content Area
Each tab’s content should include a clear title to support user orientation and accessibility. While tab labels are typically kept short for scalability and visual clarity, especially on smaller screens, you can use the content title within the tab to offer more descriptive context and enhance the overall UX. The heading tag used for the title should align with the page’s structure. Since the page already includes an H1 and an H2 used for the tabs themselves, the title within each tab should typically be formatted as an H3. However, double-checking the page’s heading structure is always recommended.
Do Not
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Use Tabs for Short Content (<50 words)
Avoid using tabs for content that is too short. Tabs are best suited for organizing distinct, meaningful sections of information. When the tab content is minimal, it can lead to unnecessary clicks, disrupt the reading flow, and make the interface feel fragmented. This contradicts UX principles such as efficiency of use and minimizing user effort. Instead, consider displaying short content inline or using headings to improve clarity and reduce interaction cost.
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When possible, avoid placing critical information like deadlines or due dates inside tabs. This is a UX best practice because such information needs to be immediately visible to users without requiring extra interaction. Hiding essential details behind an accordion adds unnecessary friction and increases the risk that users may overlook crucial dates, potentially resulting in missed deadlines.
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Production
Avoid creating tab titles longer than 50 characters. While they may display in full, long titles make it harder for users to quickly scan and locate content, especially in interfaces with multiple tabs. This adds cognitive load and contradicts UX principles such as prioritizing recognition over recall and minimalist design. Long titles can also impact readability and accessibility on smaller screens or with assistive technologies. Keep titles concise and straightforward to support a better UX.
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Use for Step-by-Step Instructions
Tabs should not separate individual steps into different tabular items because this disrupts the linear flow essential for following step-by-step instructions. According to UX principles, such as continuity and reducing cognitive load, users benefit from seeing all steps together to understand the sequence, dependencies, and overall effort required. Hiding each step behind separate clicks increases interaction cost and risks users missing or misinterpreting key details. Instead, place the entire set of instructions within a single accordion item to preserve clarity while still managing space.
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Include Accordions Inside of Tabs
Adding accordions inside a tab menu is not recommended because it creates a complex, nested interaction that can confuse users and increase cognitive load. This violates the UX principle of simplicity by forcing users to navigate multiple layers of content, making it harder for them to understand the context and maintain their orientation. Nested interfaces, such as accordions within tabs, also reduce discoverability and can be problematic for accessibility.
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Production
Placing a tab within another tab is poor UX practice because it creates a disjointed and overly complex interaction pattern. This nested structure increases cognitive load, disrupts content flow, and makes it difficult for users to understand the hierarchy and location of information. It also impairs accessibility and can lead to inconsistent behavior across devices. Instead, prioritize clarity and ease of navigation by using a single level of accordions or exploring alternative layout solutions that better support content structure and user needs.