I have a large .tif file that I would like to reduce to under 15MB (currently 650MB). The file shows 3 zones of landslide susceptibility (see pic below). I am processing it so that I can upload it to Mapbox.org, which requires smaller file sizes.
So far I have tried Boundary Clean and Majority Filter. I then converted it to a shapefile and would like to run simplify, but there's not enough memory to do so.
I am now thinking of splitting it into sections and processing in piecewise manner. I am wondering if there's any better way to go about this. Some simplification (30-60 meters of offset) is ok, but I'd like to retain general shapes and locations of information.