Note: The gzipped and Zopflinated file sizes refer to the total byte size of the file after compressing it using gzip or Zopfli with the default settings. For gzip, this boils down to gzip -6 file.js — the default compression level is 6 on a scale from 1 (fastest, but less compression) to 9 (slowest, but best compression). For Zopfli, 15 iterations are performed (i.e. the default): zopfli --i15 fi