SEO glossary · C

Conversion Rate Optimization

What is Conversion Rate Optimization?

Conversion rate optimization (CRO) is the process of increasing the share of website visitors who take a desired action, such as buying or sending an enquiry. Instead of buying more traffic, CRO gets more results from the visitors you already have.

The CRO process

  1. Measure: set up reliable conversion tracking in Google Analytics and your ad platforms.
  2. Find the problems: see where visitors drop off, using analytics, heatmaps, session recordings, surveys and user tests.
  3. Form a hypothesis: for example, “a shorter form will bring more enquiries, because people abandon it at the phone field”.
  4. Test: run an A/B test that shows the old and the new version to different visitors.
  5. Learn and repeat: keep what works and move on to the next idea.

Common CRO improvements

  • Clearer headlines and value propositions
  • Stronger, more visible calls to action
  • Shorter forms and simpler checkouts
  • Reviews, guarantees and other trust signals
  • Faster pages, especially on mobile

A/B tests need enough traffic and conversions to give reliable results. Sites with less traffic should focus on fixing the clear problems their research reveals.

CRO example

A company’s enquiry form has eight fields, and recordings show many visitors leaving at the phone number field. The team tests a version with four fields and no phone number. After two weeks and enough visits for a reliable result, the shorter form gets more enquiries, and the sales team reports that the leads are still good. The shorter form stays, and the team picks the next test.

A simple CRO roadmap

  1. Set the primary goal and make sure it is tracked correctly.
  2. Find the pages with the most visitors and the biggest drop-off.
  3. Collect evidence with analytics, heat maps, recordings and customer feedback.
  4. Write hypotheses and rank them by expected impact and effort.
  5. Run tests long enough to give a reliable result, and record what you learn.

CRO mistakes

  • Testing small details like button colours before fixing big issues such as an unclear offer.
  • Stopping tests early when one version looks ahead.
  • Running tests on pages with too little traffic to show a difference.
  • Copying another company’s results without testing on your own audience.

CRO FAQs

How much traffic do I need for A/B testing?

Enough conversions in each version to tell a real difference from chance, which is often hundreds. On small sites, improve with user feedback and make bigger changes. See A/B tests.

Is CRO part of SEO?

They support each other. SEO brings visitors, CRO turns more of them into customers. See conversion rate.

Get in touch

Know the term. Now rank for it.

Tell us the search you want to win. A specialist reads it and replies by email, and if it helps, we set up a short call.

    A specialist reads your message and replies by email.