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Source Simon Willison's Weblog simonwillison.net Analyst
June 24, 2026 ai_technology developer

simonw/browser-compat-db

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Summary

simonw/browser-compat-db Inspired by Mozilla's new MDN MCP service - source code here - I decided to try converting their comprehensive mdn/browser-compat-data repository full of browser compatibility data into a SQLite database. This new GitHub repo includes a Claude Code for web (Opus 4.8) generated script for doing that using sqlite-utils . I wanted the resulting ~66MB SQLite database to be available via the GitHub CDN with open CORS headers. GitHub releases don't have those, but any file sto

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Markdown (.md) · JSON-LD schema (.json) · Machine-readable for AI & GEO