I've used plotly.js the last months (about 3 or 4), the needs of my application are basic: pie chart, bar chart and line chart. I first tried Chart.js, very easy to work with, but some situations make me change to plotly: -The user needed numbers to be outside the pie chart when the space is limited. -The user print the chart so svg is better than canvas for this purpose Plotly has plenty of configuration options and is well documented on https://plot.ly/javascript/reference/ but for me, the most useful part is the playground (You need a plotly account). You can make your layout for a chart, view the JSON layout object and apply it on your project. The experience has been positive to me.