JPEG

JPEG and JPG are two filename extensions for the same format, fully identical in content, both referring to the lossy image standard defined by the JPEG committee. Some systems prefer .jpg (a legacy of Windows' early 8.3 naming restrictions), while some software outputs .jpeg; the two are interchangeable.

JPEG suits photographic content, lacks an alpha channel, and higher compression ratios produce more visible artifacts. In image-to-3D workflows, it works well as a heightmap input, but for contour extraction scenarios, PNG is recommended instead for precise subject edge delineation.