PaperSizes is a beautifully utilitarian reference that turns a dry subject — every paper size, dimension and format in the world — into a calm, considered piece of web design. Crisp white lettering is set against a deep charcoal background, with the A, B, C, US, Canadian and Japanese series organised into a tidy grid of cards where each format's millimetre measurements sit quietly beneath its name. A simple tab bar along the top lets visitors switch between systems, and a recurring "View All" link keeps the dense information feeling navigable rather than overwhelming. It is a lovely example of restrained UI design, proving that even a lookup tool can be elegant. Explore the project at papersizes.io.