Abstract: This disclosure provides methods, apparatuses, and computer-readable mediums for annotating an image. In an aspect, a method comprises retrieving an input image; displaying a canvas to a user containing said input image and a plurality of Shapes, wherein for each Shape in said plurality of Shapes a Shape class is defined which has its own logic to draw, edit and move the Shape; receiving one or more inputs corresponding to the addition of one or more Shapes at one or more coordinates; storing the one or more Shapes and their coordinates in JavaScript Object Notation (JSON) on a Shape list; and traversing the Shape list to draw on the canvas all stored Shapes on the input image.