How to simplify checkout process?

My store checkout page looks outdated and has too many steps. I want to turn it into a single-page experience with support for different payment and shipping methods, coupons, and address fields. Are there extensions that can help streamline this process easily?

Streamlining a multi-step checkout begins with mapping each friction point, reducing required fields, and improving form validation and auto-complete behavior to lower drop-off. Mobile-first design and session persistence help returning users. blog Consider a single-page flow that progressively reveals necessary fields, keeps optional details hidden, and supports contextual help so users complete purchases quickly while preserving payment and shipping flexibility.