Reading/Web/Lazy loading of images on all wikis

As of Thursday, Aug 18, 00:05 AM UTC images on the mobile site of all Wikimedia projects are lazy loaded. The purpose of this page is to measure the impact this had on our users. In particular we were curious about English, Indonesian and Italian Wikipedia's.

Method
Our previous experiments showed that we prevented the shipping of unnecessary bytes to our users. To measure this, using Hive, we analyzed request logs 10 days preceding and following the change. Since the change happened on the 18th August, we looked at requests from the 8th onwards. The above query was repeated for English and Italian Wikipedia.

Method
To measure impact we took a look at data we had collected via real users via the NavigationTiming API over a 20 day period (10 days before and after the change) were taken of 3 wikis using the following query: