The TIF extension is used for Tagged Image File Format, a widely supported lossless graphics format. TIFF is a standard for the exchange of digital adverts and complete pages. TIFF files contain high resolution, high quality color graphics, they only contain bitmap data, no vector data.
The TIF extension is used for TIFF-compliant geospatial image file created in the GeoTIFF format.TIF files contain high geographic or cartographic data. The GeoTIFF format uses the extensible features of the TIFF specification to add tagged metadata to the image.