When should I use the Gzip or Deflate compression scheme?
There is little difference between the two schemes, although Gzip is more widely used for HTTP compression and is given higher priority by default in IIS 6.0 built-in compression. Technically, Gzip uses the Deflate algorithm and a 10 byte header with an 8 byte footer and a 32 bit checksum. We suggest you try them both to see which produces the best compression results with your site’s code.
