How to Boost Your Website's Speed with Gatsby
January 17, 2025
Key takeaways
- Optimize images (modern formats, responsive sizes, lazy-loading).
- Reduce unused JS/CSS (bundle size, code splitting, dependencies).
- Prioritize Core Web Vitals: LCP (load), CLS (stability), INP (responsiveness).
- Performance improves UX, conversions, and technical SEO.
- Measure before/after with Lighthouse, Search Console (CWV), and GA4.
FAQ
Is Gatsby still a good choice in 2026?
Yes for many fast marketing sites and content-driven pages. The best choice depends on content, CMS needs, and integrations—but performance and maintainability should guide the decision.
Which Core Web Vitals should I fix first?
Start with LCP (perceived load speed), then CLS (visual stability), then INP (responsiveness). These have direct impact on user experience and conversion.
How do I optimize images in Gatsby?
Use modern formats, responsive sizing, lazy-loading, and avoid oversized images above the fold. Compress assets and only ship what’s needed for the first view.
Why does site speed improve SEO and conversions?
Faster sites reduce abandonment, increase engagement, and make it easier for users to complete actions. Performance is also a key part of the overall page experience signals.
How do I measure performance gains after changes?
Use Lighthouse for lab metrics, Search Console for field CWV data, and GA4 for conversions and engagement. Compare before/after on your most important pages.