Observed arrival · 2026-10-05
MegaRows plots huge data files in your browser
A free, no-account browser tool for plotting large CSV, Excel, JSON and MATLAB files.
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✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Engineers and analysts inspecting large data files
- Worth noticing
- The walkthrough centers on a 142 MB vibration log, with channel selection and synchronized zoom across charts.
Field notes
Users can select channels from large column sets, drag them into charts, and inspect min, max, mean, RMS and other statistics for either the visible range or the full file. The surrounding toolbox also lists a CSV merger for files with differing columns, separators or encodings, plus a row counter; MATLAB support is stated for versions v4 through v7.3.
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
ƒJavaScriptBrowser-side code central
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