OpenStreetMap

Technical

Opening 258.68 GB and 4.5 Billion Lines — Expanding the Whole US OpenStreetMap to XML and Measuring It in UwView Pro

A few days ago I measured the speed gap between the native and browser builds using a 3.16 GB, 100-million-lin…
2026.07.29
Technical
技術解説

How much slower is the browser build? — UwView native (UVF) vs WASM, measured on the same file

UwView, the large text-file viewer, runs both as a native desktop app (UVF) and in the browser (WASM) — the sa…
2026.07.26
技術解説
Technical Explainer

UwView Opens 51GB / 890 Million Lines of Real Data (OSM Japan) — “Apology: The 200 Million Lines Claim Was a Lie”

A while back I wrote an article about releasing the large-file text viewer "UwView" on GitHub. It claims to ha…
2026.07.09
Technical Explainer