Website performance: analyzing and improving KPIs
Building a site is good. Knowing whether it actually generates business results is what lets you decide what to improve.
- The conversion rate, not raw traffic, is the number-one KPI to track
- An analyzed conversion funnel reveals exactly where to act first
- Measuring without deciding in advance what to do with the data is pointless
- 50 small gains of 2 to 5% are worth more than a single spectacular optimization
Why measure your site’s performance
Many SMBs and mid-market companies receive traffic without knowing whether it turns into leads. Measuring performance is not a luxury reserved for large companies: it’s a business imperative to make the web investment pay off. Performance is measured in direct business results: quotes generated, qualified leads, cost per acquisition, return on investment.
The essential KPIs to track
- Conversion rate : between 2 and 5% for a showcase site, 5 to 10% for a good site. Below 2%, it’s a warning sign.
- Cost per acquisition : essential as soon as there’s paid traffic, but also calculable for organic.
- Return on investment : how much each euro invested in building and maintaining the site brings back.
- Speed & availability : every extra second of load time reduces conversion by 5 to 10%.
- Bounce rate : above 70%, it often signals poorly targeted traffic or a message that doesn’t match expectations.
Setting up tracking with Google Analytics
Correct configuration from the start saves months of unusable data: tracking code installed on every page, conversion goals clearly defined (form submitted, email collected, call, sale). A simple monthly report (visitors, sources, conversions, cost per conversion) is enough to quickly spot problems and make informed decisions.
Analyzing the conversion funnel
Optimizing continuously: from measurement to action
Measure a baseline, form a hypothesis, test a change, measure the impact. The most profitable optimizations generally focus on three areas: clarify the value proposition, make the CTA irresistible, and strengthen trust (reviews, figures, client logos). An SMB or mid-market company that repeats this cycle every month accumulates exponential gains, without one-off revolutions.
A site designed from the ground up (structure, clear CTAs, speed) makes this continuous measurement far easier: that’s what we build into every website creation and redesign project.
Common mistakes to avoid
1,000 qualified visitors are worth more than 10,000 untargeted ones.
Without defined goals, the data is useless.
Collecting data for months without ever acting improves nothing.
Start with the most serious leak, not the easiest one.
Frequently asked questions
What is a good conversion rate?+
Between 2 and 5% for a standard showcase site, 5 to 10% for a well-optimized site.
Do you need a paid tool on top of Google Analytics?+
Not necessarily: Google Analytics and Microsoft Clarity (both free) are enough for most SMBs and mid-market companies to get started.
How often should you review your KPIs?+
A monthly check-in is enough for most sites, with a more in-depth audit each quarter.