Enterprise-grade web crawler and SEO analysis platform built on .NET 10
Shouting Iguana is a powerful desktop application for comprehensive website auditing and SEO analysis. Whether you're analyzing a small blog or crawling enterprise sites with a 100K of pages, Shouting Iguana delivers professional-grade insights through an intuitive interface.
- Enterprise-Scale Crawling - Handle sites of any size with efficient SQLite-backed persistence and configurable crawl rules
- Extensible Plugin System - Install SEO analysis plugins directly from NuGet or build your own with minimal code
- Comprehensive Analysis - Detect broken links, duplicate content, missing meta tags, redirect chains, structured data issues, and more
- Professional Exports - Export findings to CSV and Excel for client reports and team collaboration
- Modern Technology - Built with .NET 10, WPF, Entity Framework Core, and Playwright for JavaScript rendering
Shouting Iguana ships with these production-ready plugins out of the box:
| Plugin | What it covers |
|---|---|
| Broken Links | Detects broken internal/external links, resources, and soft 404s with detailed diagnostics. |
| Canonical Validation | Canonical URL extraction, validation, chain detection, and cross-domain analysis. |
| Crawl Budget | Crawl budget optimization: soft 404s, server errors, crawled but not indexed pages. |
| Custom Extraction | User-defined data extraction using CSS selectors, XPath, and Regex patterns. |
| Duplicate Content | Exact and near-duplicate content detection using SHA-256 and SimHash algorithms, plus domain/protocol variant validation. |
| Image Audit | Comprehensive image optimization, accessibility, and performance analysis. |
| Internal Linking | Internal link analysis: inlinks, outlinks, anchor text, orphan pages, and link equity. |
| Inventory | Tracks indexability, URL structure, and orphaned pages. |
| International (Hreflang) | Validates hreflang implementation for multi-language and multi-region sites. |
| Link Graph | Internal linking structure showing how pages link to each other with anchor text and link types. |
| List-Mode Crawling | Import and crawl specific URL lists from CSV files with custom priorities. |
| Redirects | Analyzes redirect chains, loops, and canonicalization issues. |
| Robots & Indexability | Robots.txt compliance, meta robots, X-Robots-Tag, and indexability analysis. |
| Security & HTTPS | Validates HTTPS implementation, detects mixed content, and checks security headers. |
| Structured Data | JSON-LD, Microdata, and Schema.org structured data extraction and validation. |
| Titles & Meta | Title, meta, Open Graph, Twitter Cards, and heading structure validation. |
| XML Sitemap | XML sitemap discovery, parsing, validation, comparison, and generation. |
- .NET 10.0 SDK
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Build and run the solution
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Create a new project, configure your crawl settings, and start analyzing!
The solution is organized into focused projects:
- ShoutingIguana - WPF desktop application with modern MaterialDesign UI
- ShoutingIguana.Core - Domain models, business logic, and service interfaces
- ShoutingIguana.Data - Entity Framework Core data access with SQLite
- ShoutingIguana.PluginSdk - SDK for building custom analysis plugins
- ShoutingIguana.Plugins - Built-in SEO analysis plugins
Shouting Iguana's plugin system lets you extend its capabilities with custom analysis logic. Plugins are distributed via NuGet, making them instantly accessible to all users.
See the Plugin SDK README for a complete guide to building and publishing your own plugins.
This project is MIT LICENSE .