Conversion, checked against the research
A/B test findings, order value, colour, contrast and type. Each note says what a study found, where it stops, and what to check on your store this week.
A/B test findings
What large testing programs report about A/B tests, and how to read your own results without fooling yourself.
Open the topic: A/B test findingsAOV & upsells
Free-shipping thresholds and decoy prices: what published studies say about order value, and where they stop.
Open the topic: AOV & upsellsColour psychology
What colour research supports, what it does not, and how far either one reaches into a store.
Open the topic: Colour psychologyContrast & accessibility
Contrast ratios and tap target sizes: the WCAG numbers, and how to check them on your own store.
Open the topic: Contrast & accessibilityFonts & breathing space
Line length, line height and text spacing: what the standard asks for, and what the research adds.
Open the topic: Fonts & breathing space