SMRTR ProgrammingDec 10, 2025Daily.dev

Useful patterns for building HTML tools

SMRTR summary

Simon Willison shares patterns from building 150+ HTML tools—single-file applications combining HTML, JavaScript, and CSS created with LLM assistance. He covers strategies like avoiding React, loading dependencies from CDNs, persisting state in URLs, leveraging CORS-enabled APIs, and using WebAssembly for advanced functionality like running Python in browsers.

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