Website performance is one of the most critical factors for online success. Slow load times frustrate users, harm search engine rankings, and lead to lower conversion rates. Studies show that 53% of users abandon a website if it takes longer than three seconds to load, making speed optimization a top priority for businesses, especially in e-commerce.

At CODO.LTD, we’ve helped businesses optimize their websites for speed, stability, and scalability. One of our biggest success stories involved an e-commerce website in Japan that was struggling with poor performance. Despite using a CDN and caching tools, its Google PageSpeed score was only 36, and its conversion rates were suffering due to long load times and occasional distorted page loads.

By implementing a carefully planned combination of infrastructure and code optimizations, we successfully improved its Google PageSpeed score to 98, dramatically enhancing its user experience, SEO rankings, and conversion rates.

Why Website Performance Matters

A slow website can have severe consequences:

✅ User Experience & Engagement – Users expect instant interactions. A slow website leads to frustration, higher bounce rates, and fewer return visitors.
✅ Higher Conversion Rates – Research from Google shows that each additional second of load time can reduce conversions by up to 20%. Speed is directly linked to revenue.
✅ SEO & Search Rankings – Google prioritizes fast-loading websites. A slow site means lower rankings, less organic traffic, and fewer sales.
✅ Mobile & Global Accessibility – With over 60% of users browsing on mobile, performance optimizations ensure smooth experiences, especially in countries with slower internet speeds.

Key Strategies for Website Optimization

1. Choosing the Right Hosting & Infrastructure

Your website’s speed starts with its hosting and server architecture. Poor hosting can create bottlenecks, no matter how well-optimized your code is.

One of the most crucial steps in optimizing website performance is selecting the right hosting and infrastructure. The hosting environment directly impacts load times, uptime, and the overall stability of a website.

At CODO.LTD, we have our own systems department, allowing us to configure and maintain hosting environments tailored to most clients’ needs. Whether it’s a simple business site or a growing e-commerce platform, we ensure that the hosting setup is optimized for performance, security, and scalability.

However, in some cases, businesses require more advanced solutions. For this particular project, the scale and complexity of the website demanded an enterprise-level hosting architecture. To address this, we partnered with LCM Go Cloud, a company with extensive experience in large-scale hosting infrastructures. Together, we designed a robust AWS architecture featuring CloudFront, S3, load balancers, and a designated database machine—ensuring the site could handle high traffic volumes efficiently.

By combining our expertise in code optimization with a well-planned infrastructure, we achieved remarkable improvements in speed and reliability.

What We Used:

• Amazon CloudFront (CDN) – To cache and serve content quickly to users worldwide.
• Amazon S3 (Storage Solution) – To store images and assets efficiently without overloading the server.
• Load Balancers – To distribute traffic evenly and prevent slowdowns during high-traffic periods.
• Designated Database Machine – A dedicated database server optimized for fast queries and minimal response times.

Why It Matters: A well-architected infrastructure prevents slowdowns, reduces server strain, and ensures a fast, reliable experience for users across different locations.

2. Code Optimization for Faster Load Times

Even with the best hosting, a website won’t perform well if the code is inefficient. Bloated scripts, excessive plugins, and unoptimized page structures all contribute to slow load times.

We focused on cleaning up and streamlining the site’s code:

• Reorganizing JavaScript Execution
  • Moved non-critical scripts to load asynchronously or be deferred to prevent them from blocking page rendering.
  • Ensured that essential elements loaded before third-party scripts, making the website feel snappier.
• Rebuilding the Header & Footer
  • The previous implementation had excessive inline styles and unnecessary scripts running on every page.
  • We rebuilt the header and footer with a lighter, modular structure, improving render times.
• Refactoring Page Templates
  • E-commerce sites have many templates (product pages, checkout, categories, etc.).
  • We optimized each one to remove redundant database queries and eliminate excessive CSS and JavaScript.
• Disabling Unused WordPress Scripts
  • WordPress loads a lot of default scripts that aren’t needed for every website.
  • We disabled Gutenberg-related scripts (as the site didn’t use the Gutenberg editor), reducing unnecessary HTTP requests.

The Result: Faster page loads, smoother rendering, and a significant reduction in First Contentful Paint (FCP) and Cumulative Layout Shift (CLS) issues.

3. Optimizing Caching & CDN Performance

Many website owners assume that installing a CDN and a caching plugin will instantly fix performance issues. However, our case study proved otherwise.

Before our optimization work, the site was already using:
✅ Cloudflare – A leading CDN provider to serve static assets faster.
✅ WP Rocket – A popular caching plugin for WordPress.

Yet, despite having both in place, the website still had a PageSpeed score of only 36. Why? Because caching alone isn’t enough—it has to be configured properly.

What We Did:

• Fine-Tuned Cloudflare’s Settings
  • Optimized cache-control headers for better Time to First Byte (TTFB).
  • Used image compression and webp delivery for improved load speeds.
  • Implemented automatic minification to reduce CSS, JavaScript, and HTML size.
• Optimized WP Rocket’s Configuration
  • Tweaked caching rules to ensure dynamic pages weren’t over-cached (such as checkout and cart pages).
  • Enabled delayed JavaScript execution to improve load times on mobile devices.
  • Used critical CSS generation to prioritize above-the-fold content loading.
• Implemented Lazy Loading & Asset Preloading
  • Lazy-loaded images and videos to avoid unnecessary bandwidth usage.
  • Preloaded important resources (fonts, scripts, and images) to improve page rendering speed.

The Result: Faster caching, reduced server requests, and a smoother browsing experience, particularly for mobile users.

4. Measuring & Monitoring Performance

No optimization is complete without proper measurement and testing. To ensure our improvements had real impact, we used:

📌 Lighthouse (Google Chrome DevTools) – Provided real-time performance analysis for users in Japan.
📌 Google PageSpeed Insights – Helped us track improvements in Core Web Vitals.
📌 GTmetrix – Allowed us to analyze the waterfall loading times and server response delays.

Final Score Improvement: From 36 to 98

These optimizations transformed the website’s performance, significantly reducing load times, improving SEO rankings, and ultimately boosting conversion rates.

Final Thoughts: The Power of a Well-Optimized Website

Performance optimization isn’t about just installing a caching plugin or using a CDN—it requires a strategic approach. Our case study shows that true optimization happens at the code level, not just on the server.

✅ Optimizing hosting and infrastructure lays the groundwork.
✅ Cleaning up JavaScript, CSS, and unnecessary WordPress scripts significantly improves performance.
✅ Proper caching and CDN configuration ensure a smooth user experience.
✅ Regular performance monitoring keeps websites fast and efficient over time.

If your website is slow, struggling with conversion rates, or underperforming in SEO, we can help. At CODO.LTD, we specialize in advanced website performance optimization that delivers real, measurable results.

🚀 Want to improve your website speed? Let’s talk.

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