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You received a TIFF from a print shop, a photographer, a medical imaging system, or a GIS application. TIFF lives in the professional world — it's the format that prioritises image quality above everything else, including file size and convenience.
TIFF supports lossless compression, multiple layers, 16-bit colour depth, CMYK colour spaces, and embedded ICC profiles. A single high-resolution scan can easily exceed 100 MB. This is not a bug — it's the point. Print shops need CMYK data that hasn't been approximated. Medical imaging needs full dynamic range. Archivists need a format that preserves everything without generation loss. TIFF handles all of these, which is why it's been the industry standard since the late 1980s.
Apple Preview (macOS) and Windows Photos display TIFF files. For editing, Photoshop, Affinity Photo, and GIMP all handle TIFF natively. Browsers do not display TIFF — if you need to put the image on the web, convert to JPG or PNG with fwip. For print, keep the TIFF. For screens, convert it.
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