Did the new menu work? Measure navigation before and after

Key takeaways

To know whether a navigation change worked, record a baseline first, change one thing at a time, compare equal periods and confirm with a quick usability retest using the same tasks. Track key-page reach, homepage exits, menu clicks and enquiries. Note the change date in analytics so the comparison is clear months later.

• Record four weeks of baseline data before changing anything.
• Change one thing at a time where possible.
• Compare equal periods, allowing for seasonality.
• Retest the same tasks with five new people.

Why measure before and after?

Navigation changes often feel better without being better. A new menu can look cleaner while hiding a page buyers need. Without a baseline, you cannot tell whether enquiries changed because of the menu, the season or a campaign. A simple before-and-after plan answers the question.

• How clear website navigation improves user experience
• Navigation metrics: proof visitors find their way

What should you record before the change?

Capture the numbers the change is meant to improve, over at least four weeks, plus a usability baseline.

• Key-page reach and homepage exit rate.
• Menu clicks by item and device, if tracked.
• Site searches for menu items.
• Enquiries, calls and WhatsApp chats per session.
• Task success and time for five core tasks.

• Track menu clicks in GA4: see which links visitors use
• Task success rate: the simplest navigation measure

How do you compare fairly?

Compare four weeks after with four weeks before, and with the same period last year if the business is seasonal. Avoid launching a navigation change alongside a campaign or price change. Note the date in your records. Expect a few days of adjustment while returning visitors learn the new menu.

Should you A/B test instead?

If you have enough traffic, an A/B test gives a cleaner answer, because both versions run at the same time. Many small business sites do not have the volume for a reliable result on navigation, which affects every page. In that case, before and after plus a usability retest is the practical option.

• A/B testing for small business websites

What if the numbers get worse?

Check search first: changed URLs or missing redirects can drop traffic. Then check whether a key page lost its menu link. Look at the usability retest to see where people now struggle. Revert or adjust the specific change rather than undoing everything.

• Change your navigation without losing search rankings

What does this look like in practice?

A pattern we see: a firm renames three menu items and moves prices into the main menu. Four weeks later, key-page reach is up and searches for 'prices' have almost stopped, while enquiries are flat because of a seasonal dip. Comparing with last year's same month shows the underlying improvement.

• See client work
• Website Design & Development for UK businesses

Before and after checklist

• Four weeks of baseline data.
• Five-task usability baseline.
• One change at a time where possible.
• Change date recorded.
• Equal periods compared, with last year if seasonal.
• Usability retest with new participants.

• System Usability Scale: a 10-question score for your site
• How to redesign website navigation, step by step

Next step

Before your next menu change, write down the three numbers you expect it to improve.