Weak copy isn't the only conversion killer. Technical problems are just as common — and easier to fix.
Load speed. Deloitte and Google analyzed the mobile sites of 37 brands. A speed gain of just 0.1 seconds came with an 8.4% lift in retail conversions, and lead generation sites saw 21.6% more users reach the form page.
Aim for good Core Web Vitals: LCP under 2.5 seconds, INP under 200 ms, CLS under 0.1. Check them in Google PageSpeed Insights. Focus on real-user (field) data, not just the lab score.
Mobile experience. In Unbounce's datasets, most landing page visits come from smartphones. If the form is clumsy, the button tiny, or the text unreadable on mobile, you lose most of your potential leads.
The lead form. Every extra field lowers conversion. If you don't need the company name right now, don't ask for it. Name plus phone or email is enough for first contact.
HTTPS and security. Browsers flag insecure sites, and that destroys trust instantly, especially in B2B.
Analytics and cookie consent. With broken tracking, you don't know where a lead came from. In GA4, mark form submissions as a key event. If you run traffic from the EU, set up Consent Mode v2 — otherwise Google Ads loses part of the data it needs for optimization.
Building a customer management system starts right here: with knowing which traffic brings in real money.