# Prevent mobile network providers from modifying your site
#
# (!) If you are using `ngx_pagespeed`, please note that setting
# the `Cache-Control: no-transform` response header will prevent
# `PageSpeed` from rewriting `HTML` files, and, if
# `pagespeed DisableRewriteOnNoTransform off` is not used, also
# from rewriting other resources.
#
# https://developers.google.com/speed/pagespeed/module/configuration#notransform

add_header "Cache-Control" "no-transform";