ChecklistWeb DevelopmentPDF · 420 KB

Website Performance Audit Checklist

Audit page speed, Core Web Vitals, image optimisation, caching, CDN configuration, and render-blocking resources.

About This Resource

Website performance directly impacts user experience, conversion rates, and search engine rankings. This audit checklist helps UK businesses systematically evaluate their website's performance across Core Web Vitals, page load speed, image optimisation, caching configuration, CDN setup, and render-blocking resources. Each check includes actionable remediation steps to help you improve performance and achieve better scores in Google's PageSpeed Insights.

What's Included

  • Core Web Vitals assessment covering LCP, FID, and CLS
  • Image optimisation checklist with format and compression guidance
  • Browser and server-side caching configuration review
  • CDN configuration and cache hit ratio evaluation
  • Render-blocking resource identification and resolution steps
  • Mobile performance testing and optimisation checks

Who Is This For?

Web developers, digital marketing managers, and SEO specialists at UK businesses who need to improve their website's loading speed and Core Web Vitals scores.

Frequently asked questions

Google's thresholds are Largest Contentful Paint under 2.5 seconds, Interaction to Next Paint under 200 milliseconds, and Cumulative Layout Shift under 0.1. Sites hitting "good" across all three typically see better search visibility and lower bounce rates, though most UK SME sites need targeted work on image weight and third-party scripts to get there.

Unoptimised images are usually the biggest culprit, often followed by too many render-blocking scripts, no browser caching, and a shared hosting plan under strain. A proper audit typically finds 3-5 fixable issues that together cut load time significantly without a full rebuild.

Page speed is a confirmed ranking factor, particularly for mobile search, and slow sites also suffer higher bounce rates which indirectly hurts rankings further. Sites improving Core Web Vitals from "poor" to "good" often see measurable gains in both rankings and conversion rate within a few months.

Start with Google PageSpeed Insights for a free baseline score, then work through image optimisation, caching configuration, and CDN setup systematically. This checklist walks through each area with concrete remediation steps so non-technical teams can prioritise fixes before calling in a developer.

Technology Stack

Powered by industry-leading technologies including SolarWinds, Cloudflare, BitDefender, AWS, Microsoft Azure, and Cisco Meraki to deliver secure, scalable, and reliable IT solutions.

SolarWinds
Cloudflare
BitDefender
AWS
Hono
Opus
Office 365
Microsoft
Cisco Meraki
Microsoft Azure

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