A/B testing (also called split testing) is a method to compare two or more versions of something to see which performs better. You track key metrics like conversions, clicks, time on site, and more.
For example, you might want to see which creative grabs attention more effectively. You create two versions, show them to the same audience, and then check the numbers to see which one wins.
Who needs A/B testing and why?
Anyone running ads, managing websites, writing copy, or developing apps can benefit — marketers, copywriters, analysts, and media buyers alike.
You don’t need advanced technical skills to run a basic test — just some fundamental knowledge. You can test anything: headlines, body text, button colors, and more.
What’s most commonly tested?
- Headlines and text: Determines whether people engage and stay on the page.
- Calls to action (CTAs): The right wording can drastically increase clicks and conversions.
- Multimedia: Images, videos, animations — visuals directly affect user emotions and behavior.
- Reviews and social proof: Done right, they build trust; done wrong, they can push users away.
Common mistakes in A/B testing:
- Changing too many elements at once — makes it unclear what caused the result.
- Blindly copying someone else’s hypothesis without considering your audience.
- Ending the test too early — generally, 14 days for websites and 3–4 days for creatives is ideal.
- Relying on a single test — repeating it helps confirm results.
