How to Optimize a Builder.io Site for Better Performance?

General
1

I’m relatively new to using Builder.io and have been exploring its features for building and managing web pages. However, I’ve noticed that my site’s performance isn’t as optimal as I would like it to be. I’m looking for advice on best practices for optimizing a site built with Builder.io.

Specifically, I’m interested in:

  • Strategies for improving page load times.
  • Techniques to reduce JavaScript and CSS file sizes without affecting functionality.
  • Ways to leverage caching effectively.
  • How to utilize Builder.io’s dynamic content features to streamline site updates.
  • Any tips on integrating third-party services like analytics or ad networks to maintain a fast site speed.

I check this: https://forum.builder.io/t/optimizing-custom-components-for-better-core-web-vitals-performance-on-pagesjira-certification But I have not found any solution. If anyone has experience with these areas, I’d love to hear about your experiences and recommendations.

Thanks in advance for your insights!

Respected community member

2

Hi and welcome to the Builder.io community!

You’re asking great questions. Here are a few quick tips to help optimize your Builder.io site:

  • Improve load times: Use Builder’s lazy loading for images and components. Also, limit large third-party scripts.
  • Reduce JS/CSS size: Avoid unnecessary custom components or third-party libraries. Tree-shake and minify where possible.
  • Leverage caching: Set cache-control headers via your hosting/CDN. Use Builder’s content API with edge caching.
  • Dynamic content: Use targeting and localization features smartly—avoid loading all variations at once.
  • Third-party integrations: Load analytics/ad scripts asynchronously and defer non-essential ones.

Builder.io’s performance docs are also helpful. Hope this gives you a good start!

3
  1. Lazy Load Images & Videos
    – Use Builder’s image component with lazy loading.
    – Add loading="lazy" to videos/iframes.
  2. Serve Optimized Images
    – Use WebP format via Builder’s image CDN: ?format=webp&quality=auto.
  3. Minimize Third-Party Scripts
    – Load only essential tools (e.g. chat, analytics). Defer or load after page load.
  4. Clean Up Unused Components
    – Remove hidden or extra blocks in Builder pages.
  5. Use Static Site Generation (SSG)
    – Integrate Builder with Next.js or Nuxt to pre-render pages for speed.
  6. Reduce DOM Size
    – Avoid deep nesting and overuse of containers.
  7. Leverage Caching and CDN
    – Use a CDN like Vercel/Cloudflare and set proper cache headers.
  8. Audit with Lighthouse
    – Run performance tests to fix slow elements and layout shifts.