AlgART Tiff Information Viewer is a free portable cross-platform utility (Windows, Linux, macOS, etc.) for inspecting and decoding the structure of TIFF files. It supports most TIFF features including Big-TIFF, any bit depths, and most compressions including JPEG-2000. It displays both the image and detailed TIFF tag structure, allowing you to explore and understand TIFF files in depth. Additionally, it recognizes and shows metadata for popular multi-scale pyramid formats such as Aperio SVS.