One Tiny Change Increased Conversions by 90%

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I used to completely ignore A/B testing—and didn’t even know what it was! I’d make changes to my website, hoping they’d improve conversions

but I had no real data to back it up. Sometimes things worked, sometimes they didn’t—and I had no idea why.

But here’s the thing: without A/B testing, you’re guessing. With it, you’re making data-driven decisions that drastically help you get the results you want.

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What is A/B testing?

At its core, A/B testing is just running small experiments—trying different versions of a design, headline, or layout to see which one performs better.

For e-commerce stores, it’s usually about increasing sales. For businesses like mine (the one behind this very post), it’s about getting more people to sign up.

A simple A/B test that boosted sign-ups by 90%

Take MyCase, for example. They ran a simple redesign of their sign-up form and saw a 90% increase in conversions.

Why did it work?
Because we all have assumptions about what "should" work. But users don’t always behave how we expect. That’s why data beats gut feelings every time.

Here’s a quick fix you can test on your own forms:
A lot of people hesitate to sign up because they’re worried about spam. I get it—I hate spam too.

A simple tweak? Add a small note under your email field saying:
“We respect your privacy. No spam, ever.”

Run an A/B test and see what happens. Worst case? Nothing changes. Best case? More sign-ups.

A/B testing isn’t just about making random changes—it’s about understanding what works and why it works.

If you haven’t tried it yet, start small. Test a headline. Test a button color. Test anything—just start.

See you in the next post ✌️

Luis