Features

Vizb turns CSV, JSON, and benchmark output into interactive charts and stats without writing chart or frontend code. Tables and benchmarks share one dimension model; you run the same pipeline from the CLI, a coding agent, GitHub Action, or REST API.

New to the product? Start with Getting Started.

Inputs

CSV and JSON tables

Chart numeric columns. Promote other columns to Name / X / Y / Z with --group. Nested JSON arrays via --json-path. See Tabular data.

Benchmark parsers

Go (go test -bench), Rust (Criterion, Divan), JavaScript (Vitest, Tinybench). Auto-detect from content, override with -P. See Supported inputs.

Auto detection

--parser defaults to auto. Vizb prints the chosen parser. File path or stdin pipe both work.

Dimension model

Name / X / Y / Z

Up to four dimensions on every chart. Patterns and regex split labels. See Dimensions.

Group and select

Group: one chart per metric, categories on axes, sum duplicates. Select: columns as coordinates or metric picks. See Group vs Select.

Auto-group and auto-value

No flags: categorical files auto-group; all-numeric files auto-value continuous axes. CLI logs the inference so you can override it.

Wide competitor columns

--col-axis / -A places numeric column names on a free dimension so frameworks or versions share one chart.

Charts and UI

Eight chart types

Bar, line, scatter, pie, heatmap, radar, Sankey, Chord. Choose with --charts or a chart subcommand. See Charts.

3D (WebGL)

Z-axis data (or auto-value with 3+ numeric columns) renders interactive bar3D / line3D / scatter3D. See 3D charts.

Self-contained HTML

Sort, zoom, swap axes, fullscreen, themes, JPEG export. One file, offline. See UI.

Statistics panel

Opt-in with --stat: 33 descriptive metrics per series plus Pearson, Spearman, Kendall, and distance correlation. See Statistics.

Log scale and large data

Log scale on cartesian charts. DataZoom for wide X axes; aggregated grouped CSV/JSON stays responsive.

Merge, CI, and API

Tag-based merge

Tag datasets, merge JSON across runs, inject tags onto n/x/y/z. See Merging.

GitHub Action

Composite action for cmd or file input, merge, HTML/JSON outputs. See GitHub Action.

REST API

vizb serve exposes convert, merge, and UI generation. See serve and API.

Coding agents

Install the vizb skill, then /vizb sales.csv as bar by region & product, show labels. The agent runs the CLI. See AI agents.

Units and export

Time, memory, and number units. HTML or JSON output. Chart JPEG from the UI.

Learn more

Getting StartedIntroduction, install, and dimensions.