[GitHub] [incubator-pagespeed-mod] Lofesa commented on issue #1991: Mobile devices Web Page Performance very low Desktop improved

[GitBox <gi...@apache.org>]

Lofesa commented on issue #1991:
URL: https://github.com/apache/incubator-pagespeed-mod/issues/1991#issuecomment-622996143


   These filters are disabled for "this" request. "this" is the wrod. For lazyload/delay images pagespeed need some info that take some time to collect. The info como back to pagespeed server via the beacons. ¿What positio have the images related to the viewport? ¿What distance from the star of page maybe considered as a "frontier" to show or not images?
   These questions need info, these info is collected by the javascript injected in the page when the beacon is working and reported to the server via POST request.
   Take a look at the server log files, you must see some log request type POST whit ngx_pagespeed_beacon in the url


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