Page Speed and SEO: How to Get to Sub-2 Second Load Times

Page speed matters for two reasons: it's a Google ranking factor (via Core Web Vitals), and it directly affects conversion rate (every 100ms of additional load time reduces conversion by 1-2% in B2B). Here's how to systematically improve your site's load speed.

Diagnosing Speed Problems

Use Google PageSpeed Insights (real-world CrUX data + Lighthouse lab data) and WebPageTest.org (waterfall view of every resource loading). The waterfall view is diagnostic gold — it shows exactly which resources are loading slowly and in what order.

The Highest-Impact Fixes

Images (Usually Largest Gain)

• Convert all images to WebP format (30-50% smaller than JPG/PNG)
• Compress images before upload (aim for under 100KB for most images)
• Implement lazy loading for below-fold images
• Set explicit width and height attributes on all images
• Use responsive images (srcset) to serve appropriate sizes

JavaScript and CSS

• Defer all non-critical JavaScript
• Minify and combine CSS where possible
• Remove unused CSS (PurgeCSS for projects using CSS frameworks)
• Eliminate render-blocking resources above the fold

Server and Hosting

• Use a CDN (Cloudflare, Fastly) to serve static assets from edge locations
• Enable GZIP or Brotli compression on the server
• Implement browser caching for static assets (1 year for versioned assets)
• Use HTTP/2 or HTTP/3 if your hosting supports it

Third-Party Scripts

• Audit every third-party script — is it necessary?
• Load third-party scripts asynchronously or defer them
• Consider tag manager audits — GTM containers often contain abandoned scripts

Every B2B site we've audited has significant speed wins available from image optimization alone. Start there — it's almost always the highest-impact, lowest-effort speed improvement available.