Load speed: Target under 3 seconds on mobile. Every additional second of load time reduces conversion ~7%. Use Google PageSpeed Insights to identify issues. Common culprits: large uncompressed images (compress and serve WebP format), unnecessary JavaScript (defer or remove), unoptimised fonts (use system fonts or preload custom fonts), excessive CSS (remove unused styles).
Quick wins: compress images (use TinyPNG or similar, aim for under 200KB per image), enable browser caching, use a CDN, remove unnecessary tracking scripts (every tracking pixel adds load time). Most landing pages can load in under 2 seconds with these fixes.
Tap target size: Buttons, links, form fields must be minimum 48px × 48px for thumb tapping. Smaller targets lead to mis-taps and frustration. Review every interactive element. Navigation links often too small. CTA buttons sometimes too small. Form field labels too small (makes it hard to tap into the field).
Also check spacing: interactive elements need 8px minimum spacing between them. Two buttons side by side with 2px spacing = frequent mis-taps. Increase spacing or stack buttons vertically on mobile.
Form length: Desktop users tolerate 6-8 form fields. Mobile users tolerate 3 maximum. Every additional field reduces mobile conversion ~15%. Audit your lead forms. Do you really need company size, industry, role, pain point, and timeline? Or can you ask name, email, company and qualify later?
Progressive profiling: ask for basic info first (name, email), then ask for more details in follow-up emails or during sales conversation. Don't try to qualify perfectly on the form. Get the lead first, qualify second. For mobile specifically, less is more.
Test mobile-only improvements separately from desktop. Don't assume fixing mobile helps desktop (sometimes mobile fixes hurt desktop, like shorter forms reducing lead quality). Track mobile conversion rate specifically and optimise for it directly.