Zoombie
Published
2 min read
Guessing which headline or button works better is slow and unreliable. An A/B test replaces guessing with evidence: half your visitors see version A, half see version B, and the results show which one converts better. Done carefully, even small tests compound into large gains.
Test one change at a time
If you change the headline, the image, and the button together, you will not know which change caused the result. Pick one clear hypothesis, such as a shorter headline will increase signups, and test only that. This discipline is the same as testing website buttons properly: isolate the variable.
Wait for enough visitors
Ending a test after a day or a dozen visitors produces noise, not a decision. Let the test run until each version has enough visits to separate a real difference from chance, and resist the urge to stop early when one version jumps ahead.
Apply the winner, then test again
A winning version becomes the new baseline, not the final answer. Record what you tested and why it won, then choose the next change. This cycle is how landing page conversion improves steadily instead of in bursts.
Conclusion
A/B testing is simple in principle: one change, enough visitors, and an honest reading of the result. Run tests regularly, and your pages will improve on evidence rather than opinion.
Frequently asked questions
How long should a test run?
Until each version has enough visitors for a reliable comparison, which depends on your traffic and the size of the change.
What should I test first?
The element closest to the action: headline, offer, or main button, since those usually move conversion most.
Can I test on low traffic?
Yes, but test larger changes and run longer, or you will struggle to tell a real effect from random variation.
Should losing tests be kept?
Keep the record, not the version. A losing result still teaches you what your visitors do not respond to.
