Sub-Second Performance Engineering

Sub-Second WordPress Speed & 90+ Core Web Vitals Guaranteed

Slow websites destroy conversion rates and tank Google rankings. We perform deep, code-level performance engineering to eliminate render-blocking bloat, slash server response time, and pass Core Web Vitals.

Core Stack: HTML5 / Modern CSS TypeScript React / Vue Tailwind / Vanilla CSS GSAP Motion Webpack / Vite
chadsia.com / services / website-speed-optimization
Verified Build
Sub-Second WordPress Speed & 90+ Core Web Vitals Guaranteed
99 PageSpeed Sub-Second LCP
Senior Engineering 17+ Veteran Craft
Performance Engineering

Full-Stack Performance Tuning from Server to Browser

We don’t just install caching plugins. We refactor inefficient database queries, inline critical rendering paths, and optimize execution pipelines.

Critical Rendering Path Optimization

Inline critical CSS, defer non-essential scripts, eliminate render-blocking resources, and optimize modern web fonts.

  • Sub-50KB initial CSS bundle
  • Asynchronous JavaScript execution
  • Zero flash of unstyled text (FOUT)

Database & Object Cache Hardening

Purge orphaned transients, optimize wp_options autoload overhead, and configure Redis / Memcached in-memory caching.

  • Sub-150ms TTFB under heavy load
  • Optimized postmeta & taxonomy queries
  • Automated daily database health maintenance

Next-Gen Media Pipeline

Convert image libraries to WebP/AVIF formats with responsive srcset dimensions, dynamic lazy-loading, and edge delivery.

  • Automated WebP/AVIF compression
  • Adaptive mobile image delivery
  • Zero layout shift image containers

Edge CDN & Server Optimization

Configure Cloudflare Enterprise or Fastly edge caching with HTTP/3, Brotli compression, and full HTML page caching.

  • Global sub-second edge distribution
  • Early Hints (103) protocol configuration
  • Brotli level-11 asset compression

Server-Level Caching & Edge TTFB Tuning

Engineered NGINX / LiteSpeed micro-caching, Redis Object Caching, and Cloudflare Enterprise Edge delivery to slash TTFB below 300ms worldwide.

  • Redis Object Cache In-Memory Tuning
  • Edge Full-Page Caching at CDN
  • Server-Side Gzip & Brotli Compression
  • PHP OPcache & FastCGI Tuning

Core Web Vitals Audit & Continuous Monitoring

Real-time RUM (Real User Monitoring) and automated regression alerts to guarantee INP < 200ms, LCP < 1.2s, and CLS = 0.00 indefinitely.

  • Interaction to Next Paint (INP) Under 200ms
  • Largest Contentful Paint (LCP) < 1.2s
  • Zero Cumulative Layout Shift (CLS 0.00)
  • Automated CWV Performance Budgets
The Financial Impact

Speed Directly Drives Search Rankings and Revenue

Google Top Signal

Immediate Google Ranking Boost

Passing Core Web Vitals signals superior page experience, giving your organic search rankings a direct competitive edge.

+24% Checkout Conversion

Reduced Checkout Abandonment

Frictionless, sub-second product pages and checkout steps prevent cart drops and increase average order value.

100% Mobile Ready

Flawless Mobile Experience

Optimize for mobile users on 4G/5G connections with minimal data overhead and instant tap interactions.

-60% Server Load

Lower Server & Hosting Costs

Efficient code and edge caching drastically reduce CPU and RAM usage, allowing you to handle 10x traffic without expensive upgrades.

Speed Case Studies

Real Performance Benchmarks Across Live Sites

Defensible Legal Platform

Defensible Legal Platform

Architected a bespoke corporate web platform and solicitor directory with sub-second critical path rendering, strict WCAG 2.1 AA accessibility, and zero layout shift.

Solicitor Directory Semantic HTML5 TypeScript 99 PageSpeed
Atlas App

Atlas App

Engineered an ultra-responsive betting application and interactive client console with zero-bloat state management and real-time live odds visualizers.

Betting App Interactive UI Modern JS Custom API
Casa Halo

Casa Halo

Designed and built an ultra-premium booking portal for luxury vacation rental villas with fluid typography, immersive visual storytelling, and direct reservation inquiries.

Vacation Rental Villa Custom WordPress Fluid Typography Sub-Second
BluSonil

BluSonil

Developed a health and wellness spa platform with sub-second treatment showcase pages, interactive service selection, and streamlined direct booking.

Health and Wellness Spa Sub-second LCP Conversion UX
GypsyJazz

GypsyJazz

Custom WordPress media and learning platform with gated video masterclasses, music courses, lessons, and fast streaming audio player integration.

Music Courses and Lessons Custom WordPress Fast Media A11y AA
Broco Energy

Broco Energy

Built a high-traffic industrial fuel, commercial HVAC, and energy marketing website with dynamic delivery dispatch forms and commercial quote calculators.

Fuel & HVAC Marketing Custom PHP CRM Integration Sub-Second TTFB
Performance Roadmap

Our 4-Step Speed Engineering Framework

01

Comprehensive Waterfall & Code Audit

We analyze your site using Chrome DevTools, WebPageTest, and New Relic to identify exact database bottlenecks and blocking scripts.

  • Detailed Waterfall Analysis
  • Plugin & Database Query Bottleneck Audit
02

Code Refactoring & Script Pruning

We eliminate redundant scripts, inline critical CSS, optimize font loading, and remove unused CSS/JS on a per-template basis.

  • Modular Asset Management
  • Cleaned wp_head & Header Footprint
03

Database, Object Cache & Media Pipeline

We configure Redis object caching, clean autoloaded data, optimize image libraries to WebP, and tune web server headers.

  • Redis In-Memory Caching Setup
  • Automated WebP/AVIF Conversion
04

Edge CDN Configuration & 90+ Guarantee

We configure Cloudflare edge rules, verify real-world Core Web Vitals metrics, and provide a verified before/after audit report.

  • Cloudflare Edge Caching Rules
  • Verified Lighthouse 90+ Scorecard
Senior Performance Engineer

Direct Collaboration with a Core Web Vitals Specialist

Chad Sia has spent over a decade reverse-engineering browser rendering engines and WordPress execution pipelines. We do not use "one-size-fits-all" plugins that break your site. We write hand-crafted optimizations tailored to your exact stack.

17+
Direct Craft
0%
Middle-Men
100%
Custom Code

"We treat every line of code as an investment in your business speed, security, and conversion metrics."

CS

Chad Sia

Founder & Principal Engineer · Since 2009
Verified Client Proof

Rated 5.0 on Google Reviews

5.0
5 Google Reviews
Review on Google
Google Review

“I had a great experience working with Charles Sia Media. Charles was professional, responsive, and really easy to work with from start to finish. He understood exactly what I was looking for and delivered a clean, well-structured website that matched the brief perfectly. What stood out most was his communication and attention to detail, he kept me updated throughout the process, made changes quickly, and genuinely cared about getting the final result right. The turnaround time was also excellent. If you’re looking for reliable, high-quality web design work, I’d highly recommend Charles Sia Media. Will definitely be working with him again.”

IS
Ismail Saleem
Verified Client · 8 months ago · 1 Google review
Google Review

“We've been working with Chad for a long time now. He handles all our web design and we love him. He's a great guy and super easy to work with - and very responsive for those times where we need urgent help in a pinch. Chad is an absolute pleasure to work with!”

GJ
GypsyJazz Secrets
Client & Partner · 9 months ago · 4 Google reviews
Google Review

“I had a great experience working with Chad Sia on web design and WordPress development. Chad built a professional, easy-to-navigate website with a strong focus on conversions. The layout, calls to action, and overall user experience were thoughtfully structured to help turn visitors into leads. Highly recommended if you need someone who understands both WordPress development and conversion-focused web design.”

TP
Tech P3Music
Verified Client · Recent · Google review
Google Review

“Amazing work and completed the project in a timely fashion! Highly recommend!”

KK
Kevin Koeppel
Verified Client · 9 months ago · 13 Google reviews · 3 photos
Google Review

“legit and hassle free”

DK
dVillain .Kalaban
Local Guide · 8 months ago · 2 Google reviews · 11 photos
Verified Review

“Charles provided fast service 2-days ahead of schedule. He communicated well with me and frequently. He took feedback and adjusted the site to my requirements. A pleasure to do business with and I highly recommend him for web-site design.”

BW
Barry W.
Verified Client · Dec 14, 2025 · Web Design Client
Common Inquiries

Frequently Asked Questions

Can you optimize heavy page builders like Elementor or Divi to pass Core Web Vitals?

Yes. We specialize in optimizing existing Elementor and page builder sites without requiring a complete rebuild. We strip unneeded builder scripts, defer non-critical assets, and eliminate DOM depth bottlenecks to achieve 90+ PageSpeed scores.

Will speed optimization break existing visual features or tracking scripts?

No. We perform all optimizations on a staging environment and test all analytics (Google Tag Manager, Meta Pixel), forms, and eCommerce checkout funnels to guarantee zero loss of functionality.

What is the difference between lab data (Lighthouse) and field data (Core Web Vitals)?

Lighthouse tests your site in a simulated lab environment. Field data (CruX) measures real-world user experiences across actual mobile networks over a 28-day window. We optimize for both, ensuring real users and Google algorithms experience sub-second speed.

Do you offer a money-back performance guarantee?

Yes. We stand behind our engineering. If we cannot measurably improve your site speed and Core Web Vitals metrics according to our agreed-upon audit scope, you receive a full refund.
Accelerate Your Website

Ready to Achieve Sub-Second Load Times?

Book a free speed audit to discover your site’s exact performance bottlenecks and receive a step-by-step remediation plan.

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