ClawHub

csvglow

Generate beautiful interactive HTML dashboards from CSV/Excel files with smart insights, auto-detected charts, correlations, and statistics.

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Install

openclaw skills install csvglow

csvglow

Generate a beautiful, interactive HTML dashboard from any CSV or Excel file. Auto-detects column types and relationships, generates smart multi-column insights, histograms, bar charts, cross-analysis crosstabs, time series, correlation heatmaps, scatter plots, and a sortable data table — all in a single self-contained HTML file with a dark gradient theme.

Use this skill when the user wants to:

  • Visualize a CSV or Excel file
  • Create a dashboard from tabular data
  • Explore or analyze a dataset visually
  • Generate charts from a spreadsheet
  • Get insights about their data

Usage

csvglow <file>                       # Generate dashboard and open in browser
csvglow data.csv                     # CSV file
csvglow report.xlsx                  # Excel file
csvglow data.csv -o dashboard.html   # Custom output path
csvglow data.csv --no-open           # Don't auto-open browser

What it generates

  • Smart insights: Multi-column narrative analysis that cross-references metrics (e.g. "Gadget Y has the highest discount yet lowest revenue despite lowest cost — consider discontinuing")
  • Summary stats: Row count, column count, data types, missing values
  • Numeric columns: Histograms with stats sidebar (mean, median, std, quartiles, outlier count)
  • Categorical columns: Gradient bar charts of top values
  • Cross analysis: Automatic categorical x numeric crosstabs with overall mean lines
  • Date columns: Time series line charts with area fill
  • Correlation heatmap: Auto-detected correlations between numeric columns
  • Scatter plots: Auto-generated for highly correlated pairs (|r| > 0.7)
  • Data table: Sortable, filterable preview of first 1000 rows
  • Copy button: Each chart has a "Copy" button for pasting into slide decks

Notes

  • Output is a self-contained HTML file — no server, no CDN, works offline
  • Supports CSV, TSV, XLS, and XLSX files
  • Auto-detects delimiters and encodings
  • Large files (100k+ rows) are smart-sampled for visualizations while keeping full stats
  • Also available as an MCP server: csvglow --mcp