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Revert "Drop Cache-Control: no-transform usage"
This partially reverts commit 282d979 Ref h5bp/server-configs-apache#185
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# ---------------------------------------------------------------------- | ||
# | Content transformation | | ||
# ---------------------------------------------------------------------- | ||
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# Prevent intermediate caches or proxies (such as those used by mobile | ||
# network providers) and browsers data-saving features from modifying | ||
# the website's content using the `cache-control: no-transform` directive. | ||
# | ||
# https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Cache-Control | ||
# https://tools.ietf.org/html/rfc7234#section-5.2.2.4 | ||
# | ||
# (!) Carefully consider the impact on your visitors before disabling | ||
# content transformation. These transformations are performed to | ||
# improve the experience for data- and cost-constrained users | ||
# (e.g. users on a 2G connection). | ||
# | ||
# You can test the effects of content transformation applied by | ||
# Google's Lite Mode by visiting: https://googleweblight.com/i?u=https://www.example.com | ||
# | ||
# https://support.google.com/webmasters/answer/6211428 | ||
# | ||
# (!) If you are using `ngx_pagespeed`, note that disabling this will | ||
# prevent `PageSpeed` from rewriting HTML files, and, if the | ||
# `pagespeed DisableRewriteOnNoTransform` directive isn't set to | ||
# `off`, also from rewriting other resources. | ||
# | ||
# https://developers.google.com/speed/pagespeed/module/configuration#notransform | ||
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add_header Cache-Control "no-transform"; |