Ensuring our Canvas Looks Good on Retina/High-DPI Screens

Learn how to ensure that your canvas drawings look sharp and crisp on both old-school low-DPI screens and modern high-DPI displays. This post explains the concept of downsampling, by generating canvas visuals at a larger size and scaling them down with CSS to maintain their intended size without blurriness. Practical code examples are provided to demonstrate the technique, along with a reusable function to make any canvas high-DPI aware.