Shopify store performance guide

Faster stores convert better. Here's how to optimize Shopify themes for Core Web Vitals and global shoppers.

Shopify merchants competing in US, UK, and international markets can't afford slow storefronts. Google uses Core Web Vitals as a ranking signal, and shoppers abandon sites that take more than 3 seconds to load.

Image optimization

Use Shopify's native srcset and lazy loading. Serve WebP/AVIF where supported. Avoid oversized hero images — compress before upload and use appropriate dimensions for each breakpoint.

Minimize app bloat

Every Shopify app injects scripts. Audit installed apps quarterly. Remove unused apps and prefer native theme features or custom lightweight integrations over heavy third-party widgets.

Theme JavaScript discipline

Defer non-critical JS. Avoid jQuery if your theme doesn't need it. Use Shopify 2.0 sections efficiently — don't load section assets globally when they're only used on one page.

International performance

Use Shopify Markets for currency and localization. Consider CDN-friendly asset hosting. Test from multiple regions using WebPageTest or Lighthouse.

Building a high-performance Shopify store? Hire a Shopify developer who prioritizes speed.