Conversion rate optimization (CRO) techniques

Last reviewed: September 2026. Conversion performance varies by website, audience, traffic source and offer. Changes should be evaluated using reliable data rather than assumed to increase conversions.

Conversion rate optimization, or CRO, is the process of identifying barriers in a user journey and testing changes intended to improve completion of a defined action.

A conversion might be a purchase, form submission, account creation, subscription or another measurable action relevant to the website.

Define the Conversion Before Optimizing It

Before changing a page, define the action being measured and establish a baseline.

A useful CRO process can examine:

• Where users enter the journey;
• Where they abandon it;
• Whether important information is easy to find;
• Whether forms or checkout steps create unnecessary friction;
• Whether the page works consistently across devices.

Use A/B Tests for Questions That Can Be Tested

A/B testing compares different versions of an experience using a defined outcome.

Tests may evaluate elements such as messaging, form structure, page layout or calls to action.

Results should be interpreted with appropriate sample size, test duration and measurement quality rather than declaring a winner based on a small number of conversions.

See A/B testing for higher conversions.

Reduce Unnecessary Friction

Navigation, forms and page structure should help users understand where they are and what is expected next.

Reducing unnecessary fields, improving labels and providing clear error messages can sometimes make an interaction easier to complete.

The effect should still be measured rather than assumed.

Review Website Design in Context

Visual hierarchy, readable typography, accessible controls and predictable navigation can affect how easily users understand a page.

For more information, see Website design elements that improve CRO.

Consider the Entire User Experience

A conversion problem may originate before the final call to action.

Slow pages, unclear pricing, missing information, intrusive interfaces or inconsistent messaging can influence whether a user continues.

See User experience (UX) and its impact on CRO.

Mobile Experience Should Be Tested Separately

A responsive layout is only one part of mobile usability.

Also review tap targets, forms, keyboard behavior, content hierarchy, load performance and whether important controls remain usable on smaller screens.

Use Analytics to Find Questions Worth Testing

Analytics can identify patterns such as high abandonment rates, device differences or pages where users stop progressing.

Those observations can generate hypotheses, but analytics alone do not necessarily explain why a user behaved a certain way.

Combining quantitative data with usability testing or customer feedback can provide additional context.

Final Considerations

CRO is an iterative process of identifying a problem, forming a hypothesis, testing where appropriate and reviewing the result.

The objective is not simply to increase a percentage but to make the intended user journey clearer and easier while maintaining the quality of the resulting conversion.

This content is provided for general informational and educational purposes. Test results vary by website and audience.