You can now draw custom areas on the map, give them a label and color, and inspect their size. There's also a ruler, so you can measure the distance of a route.
Some usability changes: The page is now wider on desktops, and mobile gets bigger text and buttons. Text fields on iOS should no longer zoom in when tapped. Also, optimized the layout on all devices to allow for larger maps. Let me know if something looks off!
Ice Caves are now available for Java Snapshots as well. Also, improved Lava Pool accuracy, and added shareable links, longer searches and biome patch conditions to Seed Finder.