Signup: Blurred Product Background
Hypothesis
If we blur the product background behind a modal signup flow, then sign ups will improve because visual focus reduction directs attention to the signup form.
Test Results
Key Learning
Problem: Visual elements on the signup aren't doing enough to communicate value, build trust, or guide users toward the next step.
What worked: Blurring the product background during modal signup flows focuses attention on the signup form and improves sign ups. Visual de-emphasis of the surrounding UI helps users focus on the conversion action. Validated across 5 related tests. (+7.0% lift)
Takeaway: A meaningful improvement that compounds with other optimizations. Layout wins often unlock further opportunities — isolate which specific element drove the lift for even larger gains.
How to Apply This to Your Site
This experiment demonstrated that signup: blurred product background can produce a +7.0% improvement in conversions. The test was run on a signup page in the fintech industry. With 135,618 visitors in the sample, this is a robust result.
Before you test: Consider that layout tests typically require large sample sizes to detect small effects. Run your test for at least 2 full business cycles to account for weekly traffic patterns.
This result reached 95% statistical confidence, meaning there is a very low probability the observed effect was due to chance. Results at this confidence level are generally considered reliable for making business decisions.
What Was Tested
In this experiment, as a multi-step sign up funnel launched as a modal, there was a different treatment of the background. In the A version the background was a flat color, whereas in the B version the background used a transparent opacity to show through the landing page underneath. Impact on sign ups was measured.
Methodology
Build On These Learnings
Save your own experiments, spot winning patterns across your test history, and stop repeating what's already been tried.
Related Experiments
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Content Page: Maybe Later on Content Page
Context: Key actions on the content page disappear as users scroll, creating a gap between intent and the ability to act.
Checkout: Multiple Steps
Problem: Friction during the checkout process causes users to abandon right when they're closest to converting.