The speed-conversion relationship
Google data: a 1-second improvement in mobile page speed improves conversion by up to 27%. Portent data: sites loading in 1s convert 3x better than sites loading in 5s. For an indie SaaS, this is the difference between viable and struggling.
The biggest culprits for SaaS landing pages
- Unoptimized hero images — a 2MB PNG can be 90% smaller as a WebP
- Render-blocking scripts — third-party analytics, chat widgets, tracking pixels
- No image lazy loading — loading all images on page load, even ones below the fold
- Large JavaScript bundles — shipping all your app code to the landing page
The highest-ROI fixes
- Convert images to WebP (free, immediate 60-80% size reduction)
- Add loading="lazy" to below-fold images
- Defer non-critical third-party scripts
- Use next/image or equivalent automatic optimization
Measuring the impact
After optimization, compare real user LCP before and after using ProdFix performance monitoring. Real user data shows the actual impact on your audience, not just a lab score.
The fast enough threshold
You don't need a perfect score. You need LCP under 2.5s for most users. That's achievable without heroic optimization effort. Measure, fix the obvious things, and move on.
Stop flying blind in production.
ProdFix gives you error monitoring, performance tracking, security alerts, and AI-powered fixes — built for solo founders and vibe coders. One SDK, 2-minute setup.