Google Ads Quality Score is not opaque. Landing page experience is 39% of the formula — and page speed is its primary input. A Next.js landing page loading in 1.2 seconds can reduce effective CPC by 30–50% versus the same keyword on a 4-second WordPress page.
The Auction Math
Ad Rank = Bid × Quality Score × Expected Impact of Extensions. Quality Score 8 vs 5 on the same keyword can halve your actual CPC while improving average position. For high-intent B2B keywords at R45–R120 CPC in Gauteng, this is not marginal — it is account-level profitability.
CPC Reduction Simulator
Estimated CPC at QS 5: R45 (baseline R45 at QS 5)
Landing Page Speed Impact on CPC: Technical Requirements
- LCP under 2.5s on mobile (Google Ads mobile-first crawling)
- No interstitials or pop-ups blocking content on load
- HTTPS with valid certificate — non-negotiable
- Content relevance: H1 must match ad headline keyword intent
- Privacy policy and contact information visible without scroll
Engineering Pays for Itself
Investing R25,000 in a Next.js landing page that improves Quality Score from 5 to 8 on R30,000/month ad spend typically saves R6,000–R9,000/month in CPC — ROI within 3–4 months from ad efficiency alone.
Dedicated landing page builds · Core Web Vitals financial impact