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OSM Logo This user submits data to OpenStreetMap under the name
iD Bdon submits data to OpenStreetMap using iD.
en This user is a native speaker of English.
zh-2 此用户能以中级汉语交流。

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I support OSM by being a
member of the
OpenStreetMap Foundation
Are you?


Mapping & Tools

  • I do light POI mapping in the places I usually am: United States, Taipei, Taiwan
  • I'm particularly interested in multilingual tagging and map internationalization in the Asia-Pacific region.
  • I focus on fixing complex objects like multipolygons and coastlines when I encounter them.
  • I organized an import: San Francisco Building Height Import when I was living in the SF Bay Area.
  • HOTOSM Export Tool for downloading OSM in GIS format
  • Protomaps Extracts : download free, minutely-updated extracts on demand for areas to 100 million nodes.
  • OSM Express : a lightweight, spatial, minutely-updatable file format (.osmx) and command line utility that powers Protomaps Extracts. Works for the entire planet or any extract region.
  • PMTiles : an open, serverless archive format for tiles.
  • protomaps JS : A BSD-licensed, lightweight, i18n-friendly vector tile renderer for the web based on Canvas 2D.

My Commercial Work

  • CAD Mapper is commercial OSM-based service, transforming OSM and public domain geospatial data to 3D models for architectural visualization and 3D printing.
  • Protomaps is a company that offers open source tools and web services around OpenStreetMap.
  • Has consulted for Humanitarian OpenStreetMap Team from 2017-2020.
  • Technical consultant for the implementation and hosting of some of the most popular OSM-based basemap systems.