In episode 128 of Conversion Rate Optimization with Fexingo, Lucas and Luna dive into a surprising CRO case study: how swapping one typeface lifted conversions 19% for a cash-back browser extension. They break down the test design, the psychology of font readability vs. personality, and why the control's decorative font was hurting trust. The hosts also discuss the debate between serif and sans-serif for financial products, and how to test typography without wrecking brand identity. Plus, a listener question on whether font changes work for B2B landing pages. If you've ever dismissed typography as a design detail, this episode will make you think again.