Do CTA copy A/B tests work on lead capture pages?

Better here than elsewhere. CTA copy tests win 21% of the time on lead capture pages, against 12% across all page types — 9 points better. If you are going to test CTA copy anywhere, this is the page for it.

It is also the strongest change type we can measure on lead capture pages — nothing else we track wins more often there.

Small sample. Few of these tests cleared the bar. The 95% interval on that win rate runs 11% to 36%, so read the figure as directional.

The numbers

	lead capture pages	all page types
Tests analysed	38 tests	250+
Beat control	21%	12%
No measurable difference	50%	—
Lost to control	29%	—
Median lift when it won	not reported	—

Median traffic per variant was 1385 visitors.

What else is worth testing on lead capture pages

change type	win rate on lead capture pages	tests
CTA copy (this page)	21%	38 tests
Split URL	12%	100+
Headline	11%	50+
Styling	10%	50+

Only change types with at least 30 tests on lead capture pages appear here.

What counts as a CTA copy test

The button's words change. Size, colour and position stay as they were. Change the colour too and you have two variables.

Control and variant wireframe for a CTA copy A/B test — Control on the left, variant on the right. For how this differs from adjacent categories, see the CTA copy benchmark.

CTA copy tests that won on lead capture pages

Replaced single quiz CTA button with a quiz question and two choice buttons
Changes CTA button text from two action-oriented options to a single qualification check prompt
Adds a new refuse-all button next to the select-all button that sets all opt-in radio inputs to no
CTA text inviting the user to simulate their borrowing capacity, with a spelling correction

CTA copy tests that did not

CTA button text reading a numbered call to action
CTA button inviting users to start a free trial of the Pro plan
Replaced single CTA button with a question prompt and two choice-based CTA buttons

These are individual tests, not rules. Each ran on one site, with one audience, against one page we are not showing you. They are picked to be illustrative rather than sampled at random, and a change that won here can lose on your page for reasons none of this captures. Read them as prompts for what to test, not as findings to copy.

Who ran these tests

This is every Mida account that ran a readable test — in-house marketers, founders, product teams, and agencies working on client sites. Nothing here is filtered by who ran the experiment or how experienced they are.

Low win rates are normal in experimentation, including at the top end. Microsoft's experimentation team, reporting on its own platform, found that only about one third of ideas improve the metric they were designed to improve — and that roughly another third actively hurt it. That is a dedicated experimentation organisation with research, prioritisation and review behind every test.

A mixed population like this one runs below that. The gap is roughly what disciplined practice buys you: ideas grounded in research rather than opinion, one variable at a time, and tests built so the result can actually be read.

So treat these as a general base rate, not a target. If you would rather not close that gap the slow way, find a CRO agency in the United States, the United Kingdom, the Netherlands or Australia — or browse every region.

A win is a variant that beat its control on that test's primary goal with a statistically significant result. Tests that never got enough traffic to say anything either way are excluded. The methodology has the full detail, including what these numbers cannot tell you.