StatSim Profile

Generate data profiles in the browser or from the command line. Data is processed locally as a stream using online algorithms, so you can handle very large files without loading them into memory.

Features

• CSV and TSV support
• Streaming processing via Web Workers (UI stays responsive)
• Missing value detection (empty, NA, NULL, NaN, etc.)
• Descriptive statistics (min, max, mean, variance, std)
• Histograms and top-N value counts
• Variable type classification (Number, String, Boolean, Categorical, Mixed)
• Load files from URL via query param: ?file=https://example.com/data.csv
• CLI output modes: summary, json, and serve
• npm package: @statsim/profile

Usage

Browser: Open statsim.com/profile, drag a CSV file, paste a URL, or open a prefilled link such as ?file=https://example.com/data.csv.

CLI:

npx @statsim/profile data.csv
sprofile data.csv                       # summary (TTY)
sprofile data.csv --format json         # raw JSON
sprofile data.csv --format serve        # open local browser report
cat data.csv | sprofile --stdin         # stdin mode

Development

npm install
npm run build-dev   # build browser bundles
npm test            # run unit + E2E tests