technical-seo-checker

Technical SEO Checker - Technical SEO Audit and Website Diagnostics Tool

Skill Overview

Technical SEO Checker is a comprehensive technical SEO auditing skill that helps you diagnose issues on your website related to crawling, indexing, page speed, and mobile optimization. It is suitable for the Claude Code environment.

Use Cases

1. Diagnosing a Drop in Website Rankings

If your website’s rankings suddenly decline in search engines, or your traffic drops abnormally, this skill helps you quickly identify technical issues such as crawling obstacles, indexing errors, and abnormal Core Web Vitals metrics.

2. Pre-Launch Checks for New Websites

Before officially launching a new website or making major redesign changes, use this skill to conduct a full technical SEO audit. This ensures the site structure is friendly to search engines and helps avoid indexing difficulties or ranking limitations caused by technical problems.

3. Technical Assurance for Website Migration

When you need to change domains, adjust URL structures, or migrate to a new server, this skill provides a complete migration technical checklist. It helps you avoid common SEO risks and maintain ranking stability throughout the migration process.

Core Features

1. Crawl and Index Audit

Automatically checks robots.txt configuration, XML sitemap status, indexing blockers, and canonical tag settings. It identifies problems that prevent search engines from crawling and indexing properly, ensuring your important pages can be found and indexed in a timely manner.

2. Core Web Vitals Performance Analysis

In-depth analysis of core page metrics such as LCP (Largest Contentful Paint), CLS (Cumulative Layout Shift), and INP (Interaction to Next Paint). It provides specific optimization recommendations to improve user experience and search rankings.

3. Comprehensive Website Health Score

Provides an overall health assessment across multiple dimensions—including security (HTTPS/SSL), mobile-friendliness, URL structure, redirect chains, and structured data—along with a total health score and prioritized fix recommendations, so you know which issues to address first.

Common Questions

What’s the difference between technical SEO and traditional SEO?

Technical SEO focuses on your website’s infrastructure and code-level aspects, ensuring search engines can crawl, understand, and index your content properly. It targets technical metrics such as site speed, mobile compatibility, URL structure, and crawl access permissions. Traditional SEO typically refers to content SEO and link building—focusing on keyword optimization, content quality, and external links. Technical SEO is the foundation; even if your content is excellent, if there are technical issues, search engines may not be able to correctly identify and rank it.

Will a slow website affect SEO rankings?

Yes. Page load speed is a direct factor in Google’s ranking algorithm, especially Core Web Vitals. Slow-loading sites not only worsen user experience but can also reduce crawl efficiency, potentially affecting crawl and indexing frequency. This skill helps you analyze specific performance bottlenecks—such as uncompressed large images, JavaScript blocking rendering, slow server response—and provides tailored optimization suggestions.

How often should I perform a technical SEO audit?

It’s recommended to conduct a full technical SEO audit at least once per quarter. For websites with frequent updates, check core metrics monthly. Also audit promptly in these situations: after a site redesign, after installing new plugins or tools, when you notice an abnormal drop in traffic, or after Google releases a new algorithm update. Regular audits help detect issues early and prevent serious consequences caused by accumulated technical debt.