SVG · PNG · WebP — no browser, no react

Render charts,
anywhere

Vizzo is a lightweight CLI and SDK that turns a Grammar of Graphics definition into pixels. Built so agents, bots, and CI can ship a chart without a browser in the loop.

terminal

$ npx vizzo chart.json chart.png

GitHub

No install — also bunx vizzo or pnpm dlx vizzo

revenue.json → revenue.png

Revenue Costs

Why Vizzo

Grammar of Graphics
No browser
No Playwright
No Canvas
Works in CI
Works in Discord bots
Works with AI agents
Deterministic output

Examples

Line chart rendered by Vizzo — Line`npx vizzo examples/line.json`

Bar chart rendered by Vizzo — Bar`npx vizzo examples/bar.json`

Area chart rendered by Vizzo — Area`npx vizzo examples/area.json`

Pie chart rendered by Vizzo — Pie`npx vizzo examples/pie.json`

Multi-series chart rendered by Vizzo — Multi-series`npx vizzo examples/multi-series.json`

Time-series chart rendered by Vizzo — Time-series`npx vizzo examples/time-series.json`

CLI

terminal

$ npx vizzo chart.json
$ npx vizzo chart.json chart.png
$ cat chart.json | npx vizzo > chart.svg
$ npx vizzo '{"definition":{...}}'
$ npx vizzo chart.json --width 1200 --height 630
$ npx vizzo chart.json --format png
$ npx vizzo chart.json --theme dark
$ npx vizzo ./charts/*.json

TypeScript example

render.ts

import { render } from 'vizzo';

const result = await render({
  definition,
  width: 1200,
  height: 630,
  format: 'png',
});