Enlarge the Visual Size of Benefits

Try enlarging the digits in numerical features.

Bigger digits enhanced the persuasiveness of various messages (Huang, 2025).

Why It Works

• Size Conflation. Big fonts imply largeness: Hmm, something feels big. Must be a high number.
• Confidence Attribution. Big fonts imply a strong message: Hmm, why are these numbers emphasized? Must be better than competitors.

How to Apply

• Add Any Emphasis. Bolding can also imply confidence.
• Show More Units. In addition to the physical size of fonts, you could also increase quantity. Food packages seem larger when they display more units of food (Madzharov & Block, 2010).
• List More Attributes. While drafting an agreement, you might say: The project will be completed under budget by May 3. Try separating this single benefit into multiple benefits: The project will meet all quality requirements. The project will be completed under budget. The project will be completed by May 3.
• Polarize Font Sizes of Prices. I've seen A/B tests in which sales have increased by changing the font size of a price to be smaller or larger. Small fonts can imply a smaller size, while large fonts can imply confidence in the price. Only use a large font if your price is considered a good deal (Huang, 2025).
• Maintain Full Shapes. Detergent bottles seem smaller if they leave an empty gap for a handle (Sevilla & Kahn, 2014). Don't remove too much of your packaging or product.
• Enlarge Product Images. Especially when bigger is better (e.g., vitamins, TV, storage).

Stronger For

• New Brands. Customers must attribute a large font to confidence. This effect didn't happen for well-known companies because customers skipped this attribution; they could already judge quality (Huang, 2025).

• Huang, Y. (2025). Numbers Speak Louder When They Are Larger: The Impact of Font Size on the Persuasiveness of Numerical Stimuli in Advertising. Journal of Consumer Behaviour.
• Madzharov, A. V., & Block, L. G. (2010). Effects of product unit image on consumption of snack foods. Journal of Consumer Psychology, 20(4), 398-409.
• Sevilla, J., & Kahn, B. E. (2014). The completeness heuristic: Product shape completeness influences size perceptions, preference, and consumption. Journal of Marketing Research, 51(1), 57-68.