tech-seo-performance

Audit Core Web Vitals and optimize page speed using PSI and CrUX data.

Updated Apr 6, 2026

Search Tags:#image-optimization #core-web-vitals #lcp #seo-audit #pagespeed #ttfb #mobile-parity

Ready to run

npx skills add https://github.com/silverbee-ai/claude-silverbee-marketplace --skill tech-seo-performance

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: tech-seo-performance
Source: https://github.com/silverbee-ai/claude-silverbee-marketplace/tree/main/plugins/silverbee/skills/tech-seo-performance
Command: npx skills add https://github.com/silverbee-ai/claude-silverbee-marketplace --skill tech-seo-performance

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Technical SEO performance audit helps identify and fix speed, rendering, and indexing issues that affect user experience and search rankings by analyzing Core Web Vitals and related signals across real user data and lab measurements.

Core Features & Use Cases

Core Web Vitals analysis: LCP, CLS, INP, TTFB with field (CrUX) and lab (Lighthouse) data.
Payload & third-party scripts assessment: analyze total weight, requests, and third-party impact to optimize loading.
Image and font optimization: evaluate formats, lazy loading, and fetch priority to improve perceived performance.
Use Case: A site with slow pages can be diagnosed, and targeted optimizations recommended with guardrails and evidence.

Quick Start

Run a performance audit on a target URL and review PSI/CrUX findings to identify the highest-impact optimizations.

Frequently Asked Questions about tech-seo-performance

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I audit Core Web Vitals like LCP, CLS, and INP for a specific URL?▼

You can audit Core Web Vitals by analyzing field data from CrUX and lab data from Lighthouse for a target URL. This process diagnoses LCP, CLS, INP, and TTFB metrics to identify speed and rendering issues affecting search rankings.

What is the best way to diagnose poor PageSpeed and slow loading times?▼

Diagnosing poor PageSpeed involves analyzing payload weight, third-party script impact, and image loading configurations. By evaluating both real user data and lab measurements, you can pinpoint specific bottlenecks like render-blocking scripts or uncompressed assets.

How do I optimize images and fonts to improve website rendering performance?▼

To optimize images and fonts for rendering performance, you should evaluate image formats, implement lazy loading, and adjust fetch priority. This reduces payload weight and improves perceived loading speed for better Core Web Vitals scores.

Does this performance audit work for both mobile and desktop page parity?▼

Yes, the performance audit evaluates mobile parity alongside desktop metrics. By assessing field and lab data across different devices, it identifies discrepancies in loading speed and rendering behavior to ensure consistent user experience.

Why does my website have a high TTFB and how can I fix caching policies?▼

A high TTFB often results from server processing delays or inefficient caching policies. Analyzing server response times and optimizing caching rules for static assets helps reduce TTFB and improves overall page speed metrics.

Can I assess third-party script impact on my site's overall payload weight?▼

Yes, you can assess third-party script impact by analyzing total payload weight and the number of requests. This evaluation identifies how external scripts affect loading performance and provides actionable recommendations to mitigate their impact.