postlight/mercury-parser

Mercury Parser is an open-source library that extracts clean, structured content (like article text, titles, and metadata) from any web page. It's designed for developers building tools that need to process or display web content—such as readability-focused browsers, content aggregators, or migration tools—and supports both Node.js and browser environments with flexible output formats (HTML, Markdown, text). The project also includes a CLI tool and allows custom extraction rules for edge cases.