SEO-Info Tool

A comprehensive SEO analysis tool that helps you identify and fix SEO issues on your website.

Features

• Basic SEO Analysis: Meta tags, heading structure, links, etc.
• Performance Analysis: Load time, render-blocking resources, etc.
• Accessibility Analysis: WCAG compliance checks
• Mobile Friendliness: Responsive design checks, viewport configuration
• Image Optimization: Large image detection, alt text analysis
• Advanced Analysis:
  • Content Analysis: Readability scores, keyword density, and content structure
  • URL Structure Analysis: URL format, length, parameters, and crawl path
  • HTTP Headers Analysis: Security headers, caching, compression
  • Social Media Analysis: Open Graph, Twitter Cards, social sharing capabilities
  • Structured Data Analysis: JSON-LD and Microdata validation

Installation

npm install seo-info

Quick Start

Command Line Usage

# Basic usage
seo-info https://example.com

# Generate HTML report
seo-info https://example.com --format html --output ./reports/my-report

# Generate PDF report
seo-info https://example.com --format pdf --output ./reports/my-report

# Analyze with target keywords
seo-info https://example.com --keywords "seo,analysis,tool"

# Enable verbose output
seo-info https://example.com --verbose

# Use custom configuration
seo-info https://example.com --config my-config.json

Advanced Analysis Options

# Include HTTP headers analysis
seo-info https://example.com --save-headers

# Provide additional site URLs for crawl path analysis
seo-info https://example.com --site-urls "https://example.com/about,https://example.com/contact"

# Set custom thresholds
seo-info https://example.com --max-image-size 200 --min-words 500 --max-js-size 500

API Usage

import { analyzeSEO, generateReport } from 'seo-info';

// Fetch HTML content (using fetch, axios, or any method)
const htmlContent = await fetchHtmlContent('https://example.com');

// Run analysis
const results = await analyzeSEO(htmlContent, {
  url: 'https://example.com',
  targetKeywords: ['seo', 'analysis', 'tool'],
  advancedAnalysis: true
});

// Generate report
const reportPath = await generateReport(results, {
  format: 'html',
  outputDir: './reports',
  filename: 'seo-report'
});

console.log(`Report saved to: ${reportPath}`);

Advanced Analysis Example

import { analyzeSEO } from 'seo-info';
import axios from 'axios';

async function runAnalysis() {
  // Fetch HTML and headers
  const response = await axios.get('https://example.com');
  
  const results = await analyzeSEO(response.data, {
    url: 'https://example.com',
    headers: response.headers,
    targetKeywords: ['example', 'domain'],
    siteUrls: [
      'https://example.com/about',
      'https://example.com/contact'
    ],
    advancedAnalysis: true
  });
  
  // Access advanced analysis results
  console.log('Content Readability:', results.contentAnalysis.readability.score);
  console.log('URL Score:', results.urlAnalysis.score);
  console.log('Social Media Score:', results.socialMediaAnalysis.score);
  console.log('Security Headers:', results.headersAnalysis.securityAnalysis.score);
  console.log('Structured Data Types:', results.structuredDataAnalysis.schemaTypes);
}

Configuration

Create a .seoinforc file in your project root:

{
  "maxImageSize": 100,
  "minWords": 300,
  "maxJsSize": 400,
  "advancedAnalysis": true,
  "targetKeywords": ["seo", "website", "optimization"]
}

Available Analyzers

Basic Analyzers

• HTML Analyzer: Meta tags, headings, links, images
• Performance Analyzer: Core Web Vitals, resource loading, render-blocking resources
• Accessibility Analyzer: WCAG compliance, ARIA roles, contrast ratios

Advanced Analyzers

• Content Analyzer:

  • Readability scores (Flesch Reading Ease, Flesch-Kincaid Grade Level)
  • Content structure (paragraph lengths, lists usage)
  • Keyword density and usage
  • Content-to-HTML ratio

• URL Analyzer:

  • URL structure (protocol, domain, path)
  • Query parameters impact on SEO
  • Crawl path analysis with other site URLs

• Headers Analyzer:

  • Security headers (HSTS, CSP, X-Frame-Options)
  • Caching headers (Cache-Control, ETag)
  • Content-related headers (Content-Type, Content-Language)
  • Compression (GZIP, Brotli)

• Social Media Analyzer:

  • Open Graph meta tags
  • Twitter Card meta tags
  • Social media links and presence
  • Social sharing capabilities

• Schema Analyzer:

  • JSON-LD structured data validation
  • Microdata schema validation
  • Schema.org type detection and recommendations

Report Formats

• JSON: Raw data for programmatic use
• HTML: Interactive HTML report with visualizations
• PDF: Printable PDF report with all analysis results

License

MIT