Patrick's tool is far more than an boolean "is this a progressive JPEG or not." Comparing it to the "file" utility is a gross underestimate. It takes a JPEG, c

Patrick's tool is far more than an boolean "is this a progressive JPEG or not." Comparing it to the "file" utility is a gross underestimate. It takes a JPEG, converts it to a progressive JPEG, and then uses an animation to show you how that image will look loading as a progressive JPEG vs loading as a the original JPEG. You can see, for example, after 0.5 seconds, how does the progressive JPEG look vs. how much of the original JPEG is rendered? This is incredibly powerful and helpful for people focused on frontend web performance Comparing this to "file" is l