Testimonials on the sign-up page: +56.94% sign-up completion
Test run byMidaCompany (in-house test)
Commentary byLiftArchiveOur analysis, not theirsAdding customer testimonial blocks to its sign-up page lifted Mida's sign-up completion from 37% to almost 60%, a 56.94% gain.
Mida, an A/B testing tool, ran this test on its own site and published it as a Mida case study.
The sample was small, at about 200 new sign-ups.
- Sign-up completion: 37% to almost 60%, reported as a 56.94% lift.
- Mida's own tool reported a 100% chance that the variant beats the original.
- The result rests on about 200 new sign-ups, so the true lift could be much smaller.
- The source headline says sign-ups doubled, but the measured lift was 56.94%.
The change
Variant adds customer testimonial blocks to the sign-up page
Simplified mockup drawn by LiftArchive from the shared screenshots.
Control
The sign-up page showed the form on its own. About 37% of visitors who reached it completed sign-up.
Variant
The same sign-up page, with embedded testimonial blocks from existing customers added next to the form. The testimonials were pulled in from Senja.
Why it likely won
Our reading of the result, not the practitioner's claim.
- Seeing other customers' results at the moment of commitment can reduce doubt about whether the tool is worth trying.
- A bare form gives no reason to finish. Testimonials restate the value right where people decide.
- Visitors to an A/B testing tool are often marketers who look for proof from peers before signing up.
Caveats: Small sample of about 200 sign-ups, and the vendor tested its own product with its own tool. Duration was not shared.
Who ran it
Mida ran this test for A/B testing software and published the results (Mida case study). The numbers are theirs; the summary and commentary on this page are ours.
Read the original case study on Mida →
How to run this test on your site
- Hypothesis
- If we add short customer testimonials beside the sign-up form, then more visitors will complete sign-up because they see proof that people like them get value.
- Primary metric
- Sign-up form completion rate
- Guardrails
- Activation rate of new sign-ups
- Page load time
- Trial-to-paid conversion
- Who should test it
- SaaS products with a self-serve sign-up form and real, specific customer quotes to show. It may do little if your sign-up page already has strong social proof or most traffic arrives already decided.
Questions
Should testimonials go on a SaaS sign-up page?
They are worth testing there, because it is the point where people decide whether to commit.
Keep them short and specific so they do not pull attention from the form.
Is 200 sign-ups enough for an A/B test?
It can show a large effect, but the margin of error is wide.
Treat a result like this as a strong lead to retest, not a fixed number.
What kind of testimonials work best near a form?
Quotes that name a concrete outcome and come from people similar to your visitors. Generic praise adds less.