Announcing mod_pagespeed beta release 1.11.33.0

[Jeff Kaufman]

The first beta release of mod_pagespeed 1.11 is now available. This
release targets users on mobile devices and low-bandwidth networks by
adding Save-Data support. Save-Data is a new Client Hint that allows
site visitors to indicate that they would prefer lower-quality
resources in order to save data. [1] Sites are most likely to see
requests to save data today from visitors who have turned on Data
Saver mode in Chrome [2] or the equivalents in Opera and Yandex
Browser, often because they're on slow or expensive connections. Now,
with 1.11, when such a user comes to your site asking it to save data,
mod_pagespeed will compress images to a lower quality level [3] than
it would typically, decreasing their size further at the cost of
slightly more image distortion.

[1] https://developers.google.com/web/updates/2016/02/save-data
[2] https://developer.chrome.com/multidevice/data-compression
[3] https://developers.google.com/speed/pagespeed/module/filter-image-optimize#image-quality

Installation Instructions

If you are currently on the beta channel, you can update as usual:
* If you installed the .rpm package, you can update with:
sudo yum update mod-pagespeed-beta
sudo /etc/init.d/httpd restart
* If you installed the .deb package, you can update with:
sudo apt-get update
sudo apt-get upgrade
sudo /etc/init.d/apache2 restart

If you are currently on the stable channel and would like to switch to
the beta channel, first uninstall mod_pagespeed and install the beta
package from:
https://developers.google.com/speed/pagespeed/module/download

Instructions for building from source are available at:
https://developers.google.com/speed/pagespeed/module/build_mod_pagespeed_from_source

This release also resolves several issues:

Issue 973: Strip subresource hints
https://github.com/pagespeed/mod_pagespeed/issues/973
https://github.com/pagespeed/mod_pagespeed/commit/d0bae68
https://github.com/pagespeed/ngx_pagespeed/commit/08e284f

Issue 1214: PageSpeed console blank
https://github.com/pagespeed/mod_pagespeed/issues/1214
https://github.com/pagespeed/mod_pagespeed/commit/2bd239d

Issue 1276: CSS Parser has off-by-one heap read
https://github.com/pagespeed/mod_pagespeed/issues/1276
https://github.com/pagespeed/mod_pagespeed/commit/0bc4ce7

Issue 1277: Google Fonts CSS inlining broken
https://github.com/pagespeed/mod_pagespeed/issues/1277
https://github.com/pagespeed/mod_pagespeed/commit/e3aa7b7

Jeff Kaufman
PageSpeed Team, Google