i.chartts.com

Stateless chart image service. URL in, image out.

GET /:type.:format?d=...&d=...&l=...&w=...&h=...

Examples:

/line.svg?d=10,20,30,40,25
/bar.png?d=10,20,30&l=A,B,C
/line.svg?d=10,20,30&d=5,15,25&n=Sales,Costs&l=Q1,Q2,Q3
/pie.svg?d=30,50,20&l=Red,Blue,Green
/area.png?d=5,12,8,20,15&theme=dark&title=Growth

Params: d data (repeat for multi-series) · l labels · n series names · w width · h height · title · theme (light/dark) · c colors · xl x-label · yl y-label · grid · legend · curve (linear/monotone/step)

Types: line, bar, stacked-bar, horizontal-bar, pie, donut, scatter, sparkline, area, radar, bubble, gauge, waterfall, funnel, heatmap, boxplot, histogram, treemap, polar, radial-bar, lollipop, bullet, dumbbell, calendar, combo, step

chartts.com