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Core Web Vitals

60-120 minAdvanced

Optimize LCP, INP, and CLS for better performance and search rankings on BigCommerce.

Prerequisites

  • Access to theme files
  • PageSpeed Insights for testing
Intermediate

Improve LCP

Speed up largest visible element.

1

Optimize Hero Images

1

Use compressed, properly-sized images

2

Preload hero/banner images

3

Use WebP format where possible

2

Enable CDN

1

BigCommerce includes built-in CDN

2

Verify images load from CDN domain

3

Use Akamai Image Manager for optimization

Verification Checklist

Pro Tips

  • BigCommerce's Stencil themes are generally well-optimized
  • Be cautious with too many apps - they add JS overhead
  • Test on real mobile devices, not just desktop throttling