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Stop Guessing, Start Testing

A/B testing (split testing) compares two versions of a marketing element to determine which performs better. It removes opinion from decision-making and lets data guide your optimization. The businesses that test systematically outperform those that rely on gut feelings.

What to A/B Test

Website Elements

  • Headlines — Often the highest-impact test you can run
  • CTAs — Button text, color, size, and placement
  • Forms — Number of fields, layout, button copy
  • Images — Photos vs. illustrations, people vs. products
  • Page layout — Content order, sidebar vs. no sidebar

Email Marketing

  • Subject lines — The most common email test
  • Send times — Morning vs. afternoon, weekday vs. weekend
  • Content format — Long vs. short, image-heavy vs. text-focused
  • CTAs — Button vs. text link, placement, copy

Advertising

  • Ad copy — Headlines, descriptions, CTAs
  • Creative — Images, videos, formats
  • Audiences — Targeting variations
  • Landing pages — Different pages for the same ad

A/B Testing Best Practices

Test one variable at a time to isolate impact. Run tests long enough for statistical significance (usually 1-4 weeks). Set a hypothesis before testing. Document results and build institutional knowledge. Always have a next test planned.

Start Testing with Brandastic

Brandastic runs systematic A/B testing programs that continuously improve marketing performance. Get a free CRO consultation.