simonw/browser-compat-db
Simon W created a SQLite database from Mozilla's browser compatibility data repository. The database is available for download and can be explored with Datasette Lite due to its hosting with open CORS headers. The project is hosted on GitHub and utilizes a GitHub Actions workflow to build and update the database.
- ▪The database was created from Mozilla's mdn/browser-compat-data repository.
- ▪The SQLite database is approximately 66MB in size.
- ▪The database is hosted on a GitHub repository with open CORS headers.
Opening excerpt (first ~120 words) tap to expand
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 stored in a regular GitHub repository does - so I had Codex Desktop (GPT-5.5) build a GitHub Actions workflow that builds the database and then force-pushes it to a db "orphan" branch.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at Simon Willison's Weblog.
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