Delineate object contours more precisely with editable polygons.
Try our demo below !
The demo shows how to easily embed and customize a polygon annotation element in a web-based application.
To create a polygon, enter creation mode, and click polygon vertices, then close it by pressing Enter or double-clicking.
Edition mode: resize or edit vertices (click twice on the polygon).

Easily write your own annotation application in Javascript using the rectangle element:

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Browse the complete code on GitHub