Comparison Opening a 48 GB File Isn’t the Same as Investigating It — EmEditor vs UwView Pro on a 16 GB-RAM Laptop
"Find a specific string in this 48 GB file." When you get that request, what matters is not just "does the sof…
Comparison 
Technical Guide You Found the ERROR. The Cause Is in the Lines Before It — Tracing Context in a Huge Log
Last time we covered opening a 10GB–50GB log without splitting it and finding "ERROR". But a real incident inv…
Technical Guide File Too Large to Open? How to Investigate a 10GB–50GB Log on Windows Without Splitting It
[Update, 16 October 2026] Speed today — Pro is about as fast as before; the free edition is now on par with kl…
Comparison How to Open a 50GB Log File — and Reopen It in 0.05 Seconds. A klogg Alternative, Benchmarked
If you searched for a klogg alternative, you probably already know klogg is good. It is fast, it is free, it i…
Technical Guide My Fanless Mac Skewed My Benchmark by 54% — Thermal Throttling and Round-Robin Measurement
While measuring how my search engine scales with thread count (results here), I threw away my entire first dat…
Technical Guide How Many Search Threads Is the Right Number? I Measured 0.89 Billion Lines at 1-16 Threads
When you parallelize a text search, how many threads should you use? "One per core," "cores x 2," "physical co…
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…
Release UwView v1.2.1 — How the Browser (WASM) Build Went From “It Runs” to “It’s Usable”
We've released v1.2.1 of UwView, the free, open-source viewer for huge text files. Almost everything in this r…
Technical Notes Why We Split Search Results Into a Separate Window — Jump, Save, and Context Lines You Can Use “While Looking” With the Filter Popup
We've moved UwView / UwView Pro's (UVF / UVP) search and filter results out of the inline, overwrite-the-main-…
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…