Leadpages now integrates with Klaviyo! Capture and convert leads into lifelong customers. Check it out

BLOG / DIGITAL MARKETING

A/B Test: One Word, Two Spellings: Which One Increased Opt-ins 25.87%?

LeadpagesBy The Leadpages Team|Published June 27, 2015|Updated October 29, 2025
https://cdn.sanity.io/images/1ux2e04i/production_v3/d18100ff5b1b2c01d8be6eb3102fbf83fc8ff03d-795x447.png?auto=format

We've seen A/B tests that show what a huge difference even two words on a page can make—but what about two letters? Milan Jara of Decorative Ceiling Tiles got some surprising answers to that question in this recent A/B test. Milan’s LeadBox™ asks visitors to opt in to receive the latest catalog. Or catalogue. Either spelling is valid, so Milan decided to let an A/B test decide which one he’d use in the call-to-action button. Which version do you think increased this LeadBox's opt-ins by 25.87%? Vote below to reveal the winning A/B-tested LeadBox and our analysis. [split_test id="5615"]

Getting Started Is Easy

Turn generic campaigns into personalized experiences, improve targeting, and focus on the right audience effortlessly.

Audience Insights works with all Leadpages content, including landing pages, pop-ups, and websites. All you need is a Leadpages account and some traffic. (Please note: It’s not available for WordPress-published pages, sub-accounts, or EU-based visitors.)

Start your Leadpages 14-day free trial today

Already a Leadpages user? Try Audience Insights free for 30 days

and unlock a clearer view of your visitors.

Welcome to smarter, more effective marketing—seamlessly built into Leadpages.

LET’S GET STARTED

Curious About Leadpages ?

Begin your Leadpages 14-day free trial today.

Start Free Trial