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An annotation plugin for Chart.js >= 3.0.0

This plugin needs to be registered. It does not function as inline plugin.

For Chart.js 2.4.0 to 2.9.x support, use version 0.5.7 of this plugin

This plugin draws lines, boxes, points and ellipses on the chart area.

Annotations work with line, bar, scatter and bubble charts that use linear, logarithmic, time, or category scales. Annotations will not work on any chart that does not have exactly two axes, including pie, radar, and polar area charts.

Example Screenshot from Dropbox

View this example on CodePen

To-do Items

The following features still need to be done:

  • Box annotation labels
  • Text annotations


You can find documentation for chartjs-plugin-annotation at


Before submitting an issue or a pull request to the project, please take a moment to look over the contributing guidelines first.


Chart.Annotation.js is available under the MIT license.