I really appreciate the engineering effort went into this "JavaScript interpreter"
https://github.com/yt-dlp/yt-dlp/blob/2025.09.23/yt_dlp/jsin...
It's a subset of Javascript. HN discussion here https://news.ycombinator.com/item?id=32794081
https://github.com/yt-dlp/yt-dlp/blob/2025.09.23/yt_dlp/jsin...
It offers: - Interactive Map Tools: Measure distances and areas directly on the map. - Data Format Converters: Convert between TopoJSON and GeoJSON formats seamlessly. - Coordinate Utilities: Perform conversions and other coordinate-based operations.
No sign-up required, and all tools run client-side for privacy and speed.
Built with open standards and designed for developers, educators, and anyone interested in geographic data.
Feedback and suggestions are welcome!