You can upload equirectangular 360 photos in JPEG, PNG, WebP, AVIF, HEIC, TIFF, BMP, GIF as well as HDR formats like HDR (.hdr), OpenEXR (.exr), Radiance RGBE, and cubemap formats like DDS, KTX, KTX2. For proper spherical projection, use images with a 2:1 aspect ratio (width exactly twice the height). Standard 360 photos from apps like Google Street View, Ricoh Theta, Insta360, and GoPro work directly. Image resolution can go up to 8K for high-detail panoramas.