The maximum file size of a single 3D file you can upload to Materialise OnSite is 500 MB. If your file exceeds this limit, we cannot provide you with an instant price quote.
In order to reduce the file size of your 3D file, you can remesh/decimate your 3D model to reduce the poly count (amount of triangles) without losing any detail. This feature is present in most popular 3D design software but it may be called differently. For instance, in ZBrush, you can use the 'Decimation Master' and in Modo, there's a reduction tool.