What to test
📖 3 min readUpdated 2026-04-19
Not all tests move the needle equally. Prioritize for impact.
High-impact tests
- Headlines
- Hero images
- CTA copy
- Pricing structure
- Form length
- Page structure (radical changes)
Lower-impact
- Button color
- Microcopy
- Font choices
- Minor visual tweaks
Skip
- Things with tiny traffic
- Changes you can't measure
- A/B tests driven by opinion not data