13th December 2025
Tool
JustHTML Playground - HTML5 Parser
— Test the JustHTML Python HTML5 parser directly in your browser with this interactive playground. Parse, query, and manipulate HTML using CSS selectors, pretty-print documents, extract text content, and convert HTML to Markdown—all running client-side with Pyodide. The playground supports multiple analysis modes including tree structure visualization and streaming event inspection for comprehensive HTML document exploration.
Recent articles
- Claude Opus 4.8: "a modest but tangible improvement" - 28th May 2026
- I think Anthropic and OpenAI have found product-market fit - 27th May 2026
- Notes on Pope Leo XIV's encyclical on AI - 25th May 2026