seo-expert: A Business-Agnostic Automated SEO Audit Tool Combining HTML Parsing and LLM-Powered Intelligent Content Evaluation

The open-source seo-expert by QSkills2026 is a Python-based automated SEO audit tool designed to address the time-consuming and error-prone nature of manual checks. It combines HTML parsing to extract metadata, performs 11 built-in SEO checks, and supports LLM-powered intelligent content evaluation. Suitable for any web application, it helps developers quickly identify and fix SEO issues.

In the era of digital marketing, SEO is key to a website's organic traffic acquisition. However, manually checking each page for compliance is time-consuming and prone to omissions. seo-expert uses a business-agnostic design, suitable for various web applications like corporate websites and e-commerce platforms. It implements automatic crawling, HTML parsing, and evaluation based on best practices via Python.

The tool is developed based on Python 3.9+, using asynchronous programming. Its main dependencies include httpx (asynchronous HTTP requests), PyYAML (configuration handling), LangChain (LLM integration), and pytest (testing). The core modules are divided into checks.py (11 checks), cli.py (command line), reviewer.py (LLM evaluation), and init.py (HTML parser).

It includes a custom HTML parser _SeoHtmlParser that extracts metadata (title, meta description, canonical URL, Open Graph tags, etc.) and content structure (heading hierarchy, image alt attributes, link analysis, structured data), ensuring coverage of key SEO elements.

It includes 11 checks such as title tags, meta descriptions, H1 tags, image alt attributes, canonical links, Open Graph tags, viewport settings, language attributes, heading hierarchy, internal links, and structured data. Issues are classified into different levels (high/medium/low risk).

With optional LangChain dependency, it supports OpenAI/Anthropic models for content quality evaluation (originality, value), keyword optimization suggestions, readability analysis, and semantic relevance checks, providing insights for content strategies.

Suitable for scenarios like integration in development stages (CI/CD pipelines), regular site audits, competitor analysis, and SEO training, helping teams establish an SEO quality assurance mechanism.

seo-expert fills the gap between free and enterprise-level tools. Its features include business agnosticism, scalability, asynchronous performance, type safety, and LLM integration. More AI-driven features can be expected in the future. It is recommended that technical teams try using it to improve SEO performance.