This repository is a Python library and command-line tool for extracting structured data from HTML documents. It supports multiple formats including W3C HTML Microdata, JSON-LD, Microformat, Open Graph, RDFa, and Dublin Core. The project provides a main extract function that runs all enabled extractors and returns the results in a dictionary, with an option to convert the output to a uniform JSON-LD-like structure for easier consumption. The architecture is modular, with each format handled by a separate extractor class. The main orchestration function in `_extruct.py` manages the extraction process, error handling, and result aggregation. The command-line interface allows users to extract data from a URL or file and output JSON directly. The project includes an extensive test suite with sample HTML files and expected outputs for each format, covering valid cases, edge cases, and invalid inputs. Key reusable components include the uniform output transformation module (`extruct/uniform.py`), which normalizes data from different formats into a common structure, and the error handling pattern used throughout the extraction pipeline. The project is actively maintained, with recent updates adding support for newer Python versions and maintaining compatibility with dependencies. Technical drift is low due to regular updates and a focus on compatibility.
Yoast SEO is a comprehensive WordPress SEO plugin providing on-page content analysis, XML sitemaps, schema markup generation, social media previews, and AI-assisted content optimization. The codebase is a monorepo containing PHP backend logic under a domain-driven architecture (Application, Domain, Infrastructure, User_Interface layers) and a modern JavaScript frontend using React, Redux, and Tailwind CSS. It integrates deeply with the WordPress ecosystem through hooks, REST API endpoints, and a robust conditional-based feature toggling system. Core capabilities include real-time readability and SEO assessments via a web worker-based analysis engine (packages/yoastseo), bulk editing of SEO metadata, AI content generation (titles, descriptions, outlines), schema aggregation for structured data, a dashboard with Google Site Kit integration, and extensive support for third-party plugins (WooCommerce, Elementor, WPML). The plugin employs a well-defined integration pattern (Integration_Interface with get_conditionals) for modular feature management. The repository exhibits professional engineering practices including comprehensive automated testing (PHPUnit, Jest, Mockery, Brain Monkey), dependency injection, and continuous integration. However, it shows signs of architectural drift with deprecated classes and legacy WPSEO_* namespaces coexisting with newer code, and a high open issue count reflecting its large user base. The AI features (consent management, content planner) are relatively recent additions with evolving requirements.