What if I told you that your website lost you $50,000 last month?

Not from hacking. Not from server crashes. From something far more insidious: friction.

Every slow page load. Every confusing menu. Every missing trust signal. Each tiny annoyance adds up to a massive, invisible drain on your revenue.

The scariest part? Most businesses have no idea it's happening.

The data is staggering:

• 70.19% of shopping carts are abandoned (Baymard Institute, 2025)
• 88% of users won't return after a bad experience (Sweor, 2024)
• $2.6 trillion lost to conversion friction in 2024 alone

Your competitors who seem to effortlessly attract customers aren't lucky—they've systematically eliminated the 12 conversion killers hiding in plain sight.

The question isn't whether your website has these problems. It's which ones are costing you the most.

After 10+ years writing for companies like Vercel, Supabase, and PostHog, I've identified the 12 warning signs that consistently kill conversions across every industry.

This post gives you:

• Quick diagnostic tests you can run in under 5 minutes each
• Specific metrics that reveal problem severity
• Priority fixes ranked by impact and difficulty
• Real case studies with measurable results

Most importantly: actionable steps you can implement today—not vague advice requiring an agency engagement.

The companies implementing these fixes see transformational results:

• Vodafone: 31% LCP improvement → 8% increase in sales
• Walmart Canada: Mobile optimization → 98% increase in mobile orders
• ASOS: Checkout redesign → 8.5% conversion increase
• Blue Fountain Media: Trust seal addition → 42% conversion lift

These aren't outliers. They're what happens when you systematically eliminate friction from the user journey.

Every hour you wait is revenue walking out the door.

You have two options:

1. DIY: Use this guide to audit and fix your site yourself. Start with Sign #1 (Page Speed) and work through the list.
2. Get Help: Book a free 30-minute strategy call and get a professional audit of your top conversion killers.

Either way, take action today. Your future revenue depends on it.