The promise is in the name: "HD." Most files on hdanime.com are encoded in at 1080p. Some newer movies (like Suzume or The First Slam Dunk ) are available in 4K upscales, though native 4K anime is still rare.
HDAnime (hdanime.com) is an unofficial streaming platform offering a vast, high-definition library of subbed and dubbed anime, featuring a dark-mode interface with multiple server options for playback. Users can access content via search or browsing, with features like watchlists available upon account creation, while utilizing ad-blockers and VPNs for enhanced safety.