How to add annotations in Flourish
5m
In this video, you'll learn how to add annotations to a chart in Flourish – turning a plain line chart into one that highlights the moments that matter most.
Click here to follow along with the exercise.
How to add annotations in Flourish
5m
In this video, you'll learn how to add annotations to a chart in Flourish – turning a plain line chart into one that highlights the moments that matter most.
Click here to follow along with the exercise.
What you’ll learn
- Adding point annotations to call out a specific moment on the x-axis
- Adding range annotations to highlight a span of time
- Formatting dates correctly for both display and input
- Styling your annotations with custom colors and opacity
- Adding a simple reference line (no label needed) to mark a key threshold, like zero
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Last updated 06 Oct, 2026
