Website Speed Optimisation Service

Why Website Speed Matters

Website performance directly impacts business metrics:

• Search Rankings — Google uses Core Web Vitals as a ranking factor. Slow sites rank lower.
• Conversion Rates — Every additional second of load time reduces conversions. Amazon found that 100ms of latency cost them 1% in sales.
• User Experience — Users abandon slow sites. 53% of mobile users leave if a page takes over 3 seconds to load.
• Server Costs — Inefficient code and missing caching mean more server resources for the same traffic.

Many performance issues are fixable with the right diagnosis. The challenge is identifying which optimisations will have the most impact.

What Gets Analysed

Core Web Vitals

Google’s Core Web Vitals are now a ranking factor:

Largest Contentful Paint (LCP)

• Identifies what content is measured as LCP
• Analyses blocking resources delaying render
• Reviews server response time contribution
• Examines image and font loading optimisation

First Input Delay (FID) / Interaction to Next Paint (INP)

• JavaScript execution time analysis
• Main thread blocking identification
• Third-party script impact
• Event handler efficiency

Cumulative Layout Shift (CLS)

• Image and iframe dimension analysis
• Web font loading impact
• Dynamic content injection
• Ad placement stability

Frontend Performance

Frontend analysis covers asset delivery and rendering:

Resource Loading

• Critical rendering path analysis
• CSS and JavaScript delivery optimisation
• Resource prioritisation (preload, prefetch)
• Async and defer script loading

Images

• Format optimisation (WebP, AVIF)
• Responsive image implementation
• Lazy loading effectiveness
• Compression levels

Web Fonts

• Font loading strategy
• Subset and unicode-range usage
• FOUT/FOIT prevention
• Variable font opportunities

Third-Party Resources

• Script impact quantification
• Loading strategy assessment
• Self-hosting opportunities
• Tag manager efficiency

Backend Performance

Server response time significantly impacts total load time:

Server Response

• Time to First Byte (TTFB) analysis
• Application processing time
• PHP/Node.js execution efficiency
• Memory usage patterns

Database

• Query execution time
• N+1 query detection
• Index utilisation
• Query caching effectiveness

Caching

• Page caching implementation
• Object caching utilisation
• Fragment caching opportunities
• Cache invalidation strategy

Infrastructure

Hosting and delivery infrastructure affects performance:

CDN Configuration

• CDN coverage and effectiveness
• Cache hit ratios
• Edge optimisation
• Geographic distribution

Server Configuration

• HTTP/2 or HTTP/3 enablement
• Compression (Gzip, Brotli)
• Keep-alive configuration
• SSL/TLS optimisation

Common Performance Issues Found

Frontend Problems

Render-Blocking Resources

• Large CSS files loaded synchronously
• JavaScript blocking first paint
• Fonts blocking text rendering
• Critical CSS not inlined

Image Issues

• Images served without optimisation
• Missing responsive images
• No lazy loading implementation
• Images without width/height causing layout shifts

JavaScript Bloat

• Unused JavaScript shipped to browsers
• No code splitting
• Polyfills served to modern browsers
• Heavy frameworks for simple pages

Backend Problems

Database Bottlenecks

• Queries executed for every page load
• Missing indexes on frequently queried columns
• Complex joins that could be simplified
• No query result caching

PHP/Server Issues

• Opcode caching disabled
• Excessive file system operations
• Memory limits causing swapping
• No page caching for static content

Infrastructure Problems

Missing CDN

• Assets served from origin only
• No geographic distribution
• No edge caching of static content

Poor Cache Configuration

• Short cache TTLs forcing revalidation
• No browser cache headers
• CDN not caching cacheable content
• Cache stampede vulnerabilities

Performance Review Methodology

The review follows a systematic approach:

1. Baseline Measurement — Current performance metrics from multiple tools and locations
2. Waterfall Analysis — Request-by-request breakdown of page loading
3. Core Web Vitals Diagnosis — Specific issues affecting each metric
4. Backend Profiling — Server-side execution analysis
5. Database Review — Query performance and optimisation opportunities
6. Infrastructure Assessment — Hosting and delivery configuration
7. Recommendations — Prioritised by impact and implementation effort

The Performance Report

You receive a comprehensive report including:

• Current Metrics — Baseline performance across key metrics
• Core Web Vitals Status — Pass/fail status with specific causes
• High-Impact Issues — Problems with the largest performance penalty
• Quick Wins — Low-effort changes with immediate benefit
• Strategic Improvements — Larger changes with significant impact
• Implementation Guide — Step-by-step optimisation instructions
• Expected Improvements — Estimated metric improvements per change

Getting Started

To begin a performance review, provide:

• Website URL and key pages to analyse
• Current hosting setup information
• Access to server/code if backend review needed
• Specific performance concerns
• Traffic patterns (peak times, geographic distribution)

A quote will be provided within 24-48 hours based on scope.