We talked about WordPress Network (Multisite) at our March 19, 2015 meetup. Chad Warner introduced WordPress Network (Multisite). Then, Mika Epstein from DreamHost joined us via Google Hangout to talk about the dos and don’ts and answer our questions. Below are the notes.
BackupBuddy doesn’t officially support Multisite, but it can back up a network. It can also be used to export individual sites within a Multisite and import them at a different URL, but this only works with versions under 5.0.
“[W]e just grab the best version that we can find, and manipulate that single source image for whatever size, crop, or filter happens to be requested at the time. That lets us do cool things, like upscaling for Retina displays, as well.” George Stephanis, Jetpack dev
“There’s a script we load with photon that will detect if your user is on a Retina display, and then swap out images for the higher-resolution versions.” George Stephanis, Jetpack dev
Photon filters content but doesn’t change the info in the database.
Photon currently only acts on images in posts and pages, as well as featured images (post thumbnails). Also works for CPTs.
Photon will apply to old posts and new ones alike and can be turned on or off easily.
Photon looks at the img element’s width and height attributes and then serves an image resized to those dimensions or to the width of the containing element (whichever is smaller).
How to use
Enable the Photon module in your Jetpack settings.