Site Speed Auditor

Site Speed Auditor

Purpose

Audit website speed and performance from a business and user-experience perspective, then prioritize fixes that can improve loading, usability, SEO, and conversion.

This skill is built for e-commerce, DTC websites, B2B websites, mobile pages, landing pages, and international sites.

When to Use

Use this skill when the task is to:

• audit website speed;
• interpret PageSpeed or Core Web Vitals signals;
• find performance blockers;
• prioritize speed fixes;
• improve mobile loading;
• reduce bounce caused by slow pages;
• connect speed issues to SEO and conversion.

When NOT to Use

Do not use for deep engineering implementation or server configuration. Use this skill to diagnose and prioritize performance actions.

Inputs

Useful inputs:

• PageSpeed or Lighthouse report;
• Core Web Vitals data;
• page URL;
• device type;
• country or region;
• platform;
• image/media assets;
• scripts and apps;
• business goal;
• conversion issue.

Workflow

1. Define the page type, device, and business goal.
2. Review Core Web Vitals and loading signals.
3. Identify image, script, font, app, third-party, and layout-shift issues.
4. Separate critical fixes from low-impact recommendations.
5. Prioritize actions by user impact, SEO impact, and implementation effort.
6. Recommend measurement after fixes.

Output

Always provide:

• speed diagnosis;
• likely performance blockers;
• Core Web Vitals notes;
• mobile and desktop notes;
• priority fixes;
• implementation guidance level;
• KPI and retest notes.

Best Practices

• Prioritize mobile performance when mobile traffic is high.
• Fix heavy images and unnecessary scripts early.
• Focus on user-visible loading, not score chasing.
• Retest after each major change.
• Connect speed fixes to conversion and SEO impact.

Common Mistakes

• Optimizing score instead of user experience.
• Ignoring mobile networks.
• Loading too many third-party scripts.
• Using oversized images.
• Not checking layout shift and interaction delay.

Related Skills

• technical-seo-auditor
• mobile-ux-optimizer
• cro-auditor
• google-analytics-expert
• search-console-expert