Large Files

Technical Deep Dive

The Text Viewer That Opened 890 Million Lines: How Far Can It Really Go, Theoretically?

My self-made large-file text viewer "UwView," which had advertised a "maximum of 200 million lines," recently…
2026.07.15
Technical Deep Dive
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