chartjs/chartjs-plugin-annotation

Chart.js Annotation Plugin is a tool for adding visual annotations to Chart.js charts, such as lines, boxes, points, labels, polygons, and ellipses. It supports line, bar, scatter, bubble, and doughnut charts with linear, logarithmic, time, or category scales. This plugin is ideal for developers using Chart.js who need to enhance their charts with additional contextual information or visual markers.