Call-to-Action (CTA) A/B Tests: Button Copy, Design, Placement

The best call to action examples in our database name the exact thing the visitor gets, at the lowest commitment that still moves them forward: "Free Demo" beat "Get a Demo" by 99.42% in clicks, "Request pricing" beat "Request a quote" by 161.66%, and "Open an Account" beat "Learn More" by 43% in funded accounts.

Across the SaaS and lead-gen CTA tests below, specific and low-risk wording won far more often than generic verbs, and placement and button count mattered as much as the words.

This hub covers non-ecommerce CTAs: demo, trial, quote, sign-up and enquiry buttons.

For product-page buttons, see add-to-cart button tests. Every test that matches this element appears in the grid on this page.

What follows is the analysis: what won, what lost, and how to test your own.

CTA buttons: what the tests say about design, placement and count

Before you rewrite a button, check that people can find it.

Some of the biggest wins here came from moving or isolating a CTA, not rewording it.

VMware moved its try and buy CTAs from a list of links at the bottom of an SMB page to above the fold, with small copy tweaks.

The result was +956% clickthrough in a three-way split.

Digital NRG added an above-the-fold contact button to an insurance landing page for +133.38% CTA clicks.

Fewer competing buttons also helped. Masters ITC Software removed the "Buy Now" button that sat next to Scanitto's free trial download and got +29.75% free downloads at 97% confidence.

Majestic Wine removed a PDF download button beside its enquiry CTA for +36.9% enquiries.

The reverse can also work, though. GetResponse added a "Free Trial" button next to "Buy Now" and saw +158.6% free accounts.

The pattern isn't "always one button." When two buttons ask for the same commitment, they compete.

When the second one gives hesitant visitors a lower-risk option, it can add conversions.

On mobile, the button often scrolls out of view before the visitor is ready to act.

Booking.com added a sticky mobile CTA to its partner sign-up page and saw +36% registration clicks.

Copado put a "Book a Demo" button in the mobile header, and demo visits rose from 8.30% to 9.88%.

Insighten added a "Get a Quote" button to Westfund's sticky nav for +10.82% quotes started.

If your main CTA only appears in the hero, a persistent version is a cheap first test.

Design changes are the least predictable. A "louder" design does not mean a better one.

OnSwitch turned its purchase text yellow, repeated "Save 58%" and boxed the button in red, and conversion fell 10%.

Color wins in the database, like Open Mile's red quote button, are best read as contrast fixes on one specific page, not proof that a color works everywhere.

Whatever you choose, keep the button readable. WCAG asks for at least 4.5:1 contrast for normal-size text and 3:1 for user interface components against adjacent colors.

CTA button examples from real A/B tests

These are some of the strongest copy tests in the database where the button wording was the main change.

Click any result for the full test, including caveats.

Read the metric column carefully. Many of these measure clicks, not leads or revenue.

Veeam's click-through went from 0.54% to 1.40%, but the test counted visits to the inquiry page, not submitted forms.

The Going result was reported month over month, and its CTA also changed which offer people entered.

CTA best practices the evidence supports

Four patterns show up again and again in the winners.

1. Say what happens next. "Request pricing" tells a buyer they'll get a number. "Request a quote" sounds like a sales process. "Open an Account" names the result, where "Learn More" names nothing.
2. Lower the perceived cost. "Free Demo" and "Get a Free Quote" won by stating the price of the next step: nothing. Soocial added an "It's free!" label next to the sign-up button for +28% click-through.
3. Offer a smaller step. VolunteerMatch's winning page added a demo button for people not ready to talk to sales. According to the case study, 30% of "Speak to an Expert" clickers filled out the form, against none in the control.
4. Make the button match the page around it. Warner Music Group added contextual copy next to the CTA and conversion went from 14.0% to 18.6%. A button works best when the copy above it has already made the case. That's information scent at the button level.

One "best practice" the data does not support: that a low-commitment offer always wins.

In Method Savvy's PPC tests for AvidXchange, a white paper download lost to a "five-minute conversation" CTA.

A clear, short sales call beat the softer content offer.

Call to action phrases that won, and ones that lost

Phrases that won in at least one test in our database include "Free Demo", "Get a Free Quote", "Request pricing", "Speak to an Expert", "Start registration", "Inquire Now", "Open an Account", "Trial for free", "Watch The Video" and "Make Me Famous".

The Social Man's "Watch The Video" opt-in button lifted email opt-ins 28%.

The losses are just as useful. Booking.com tested four registration labels on its Partner Hub.

"Start registration" did best, and "Sign up today" cut clicks by about 10%.

Britannica tried replacing "Start your free trial" with "Become a subscriber" and "Become a member" on a subscription pop-up.

Both variants lost, with CTR down as much as 20%.

Asking people to adopt an identity ("subscriber", "member") was a bigger ask than starting a free trial.

Don't copy a phrase from this list and expect the same lift.

Each won against one specific control, on one audience.

A phrase is a hypothesis to test, not a fix.

Button copy: how to write variants worth testing

Button copy is microcopy with an outsized job.

A useful way to write variants is to change one dimension at a time:

• Outcome: what the visitor gets ("Price Guide", "Get My Quote").
• Cost: what it costs them ("Free", "2 minutes", "No card needed").
• Commitment: how big the step feels ("Book a Demo" vs "See a 3-Minute Demo").
• Clarity: plain words over clever ones. Motorpoint got better step-through with a plainer button label in its "Sell Your Car" flow.

The PriceCharting result shows why context matters. The winning test changed the label and removed the fee shown beside the button, so the +620.9% isn't from the words alone.

When a test changes the label and something else, credit the bundle, not the copy.

If you change visible button text, update the accessible name too.

WCAG 2.5.3 says the accessible name must contain the text that is presented visually, so people using speech input can say the label to click it.

How to A/B test your call to action

CTA tests are cheap to build, which makes them easy to run badly. A few rules keep the results honest.

Measure the action after the click. A label that promises more can lift clicks and hurt completed leads.

Use form submissions, trial starts or paid accounts as the primary metric, and track clicks as a diagnostic.

Set a guardrail metric such as lead quality or sales-accepted leads.

Size the test first. Corcentric's +99.42% came from about 800 visitors over two weeks.

A result that large on a sample that small often shrinks on a rerun.

Use the sample size calculator and set a realistic minimum detectable effect before you launch.

Start with placement and count, then copy. The biggest wins here (VMware, Enhance Insurance) came from making the button visible.

If people can't see the CTA, no wording will save it.

Test the offer, not just the verb. Going's "Trial for free" sent people into a premium trial instead of a free plan.

Many large "copy" wins are really offer changes.

That's fine, but label them that way in your notes.

For related tests, see form field tests and sign-up page tests, browse every element, or search all tests.