Agent skill · data analytics · sickn33
pagespeed-enhancer
Scan, audit, and fix web performance issues across all four Lighthouse/PageSpeed Insights pillars — Performance, Accessibility, Best Practices, and SEO — in structured batches.
Why this skill is useful
Provides a structured batch workflow for optimizing web performance that includes specific metrics and actionable insights not commonly known.
What it needs
About 2k tokens when loaded. Last updated 2026-08-07. 44,571 stars on the source repository.
What this skill does
PageSpeed Enhancer Skill A structured, batch-wise audit-and-fix workflow for all four Lighthouse pillars. Always follow the batch flow in order. Never jump straight to fixes without completing the scan and risk assessment phases. --- Detailed Guide Read the detailed guide before executing this skill. It retains the complete procedure and reference material. Treat its safety, prerequisites, and validation requirements as mandatory. For focused work, load the relevant sections; for end-to-end work, read the guide completely. When to Use This Skill User pastes a PageSpeed Insights report or mentions Lighthouse scores User asks to improve Core Web Vitals (LCP, FCP, CLS, TBT, SI) User needs help with render-blocking resources, unused JavaScript, image optimisation, security headers, ARIA compliance, or SEO meta-tag fixes User asks "why is my LCP slow", "fix accessibility issues", "improve my SEO score", or "my site scores 80 on performance" Any mention of PageSpeed, Lighthouse, Web Vitals, or site speed --- Examples Example 1: User pastes a PageSpeed report User: "My site scores 65 on Performance. LCP is 4.2s." Agent: 1. Parses the score summary table — identifies LCP as critical bottleneck 2. Runs Batch A scan — finds lazy-loaded hero image and render-blocking CSS 3. Outputs risk report: F1.1 (CSS @import → link) ranked P1, F1.5 (LCP image eager) ranked P1 4. Applies Fix Batch 1, verifies with re-test Example 2: User asks about slow LCP User: "Why is my LCP slow?" Agent: 1. Asks for a PageSpeed report URL or pasted results 2. Runs LCP-specific audit from Batch A — checks TTFB, element render delay, lazy loading 3. Identifies the LCP element, its current loading strategy, and the critical path chain 4. …
How to use it
Reference it in AdaL, Claude Code, Cursor or any coding agent — nothing to install:
@skills sickn33/pagespeed-enhancer--2df8d4