SG Optimizer for WordPress Multisite Setup

Our WordPress plugin - the SG Optimizer was launched more than five years ago. Initially, it just allowed our WordPress users to benefit from our unique dynamic caching option - the SuperCacher. We later added 2 more functionalities to the plugin: PHP version update and HTTPS-one-click setup. Now we're launching a new plugin update that includes something many of our clients have asked for - multisite support. Read on to see what we've done and how this can benefit you and your network of WordPress sites.

Caching made easy for multiple sites

1. Configure fast Cache options through WP network admin

With the new update, a WordPress multisite network admin will be able to perform easily the major SuperCacher related actions. They include cache purging, switching on and off the dynamic cache, and the autopurge options. All these can be applied with a click per site or in bulk for a group of sites from one screen - the WP sites page for network admins.

2. Cache Config Access Control

Furthermore, the network admin can decide if the SuperCacher config will be accessible in the WP admin for any of the sites in the network. If access is allowed, site admins with regular admin access can also manage the cache options. Otherwise, they won't be able to access caching or HTTPS options.

3. Default Cache Options for New Sites on the Network

With the new update, a WordPress multisite admin will be able to set if all new sites are launched with dynamic cache enabled by default and if the network as a whole will be using Gzip compression and browser cache leverage. Check out our detailed tutorial on How to Configure SuperCacher for WordPress Multisite environment.

Manage HTTPS Аcross the Network

Through the site settings in the WP network admin, you will be now able to force HTTPS on each of your sites. In addition, you can select whether the HTTPS config will be available in the site WP admin too, or only network admins will be able to manage this option.

Manage PHP Version for the Multisite Network

As all sites in a WP multisite setup should always use one and the same PHP version, the PHP config will now be available only for Network Admins. The network administrator will be able to use all cool PHP test and change functionality as stand-alone WordPress users. Changes, however, will be applied throughout the entire network.

WordPress Initiatives Manager

Enthusiastic about all Open Source applications you can think of, but mostly about WordPress. Add a pinch of love for web design, new technologies, search engine optimisation and you are pretty much there!


  1. Reply February 27, 2018 / 07:22 JosephSiteGround Team

    This is really great news for Multisite setup. Any news with the Jetpack team? We really would like to hear similar deal with Jetpack

    • Reply February 28, 2018 / 01:22 Hristo PandjarovSiteGround Team

      Not yet Joseph, we will write more once there's development on that front, I promise 🙂

  2. Reply February 27, 2018 / 10:02 Jaswinder KaurSiteGround Team

    Only sites hosting with Siteground can use this plugin or someone can use with other hosting as well?

    • Reply February 28, 2018 / 01:23 Hristo PandjarovSiteGround Team

      The plugin works only on SiteGround infrastructure due to the way caching is configured 🙂

  3. Reply February 27, 2018 / 10:04 kennySiteGround Team

    Hello Hristo,

    I hope you don't mind... but there was an email from siteground yesterday (re the new backup option for go geek and cloud). Unfortunately, no post with it (only a no reply email).
    So, I am letting siteground know... that I tried to "create backup " twice via cpanel... nothing happens... could be a general bug.
    Sorry for posting here... the opportunity presented,

    • Reply February 28, 2018 / 01:24 Hristo PandjarovSiteGround Team

      Could you email me directly? hristo.p at with more info about your account so I can check it out and get back to you.

  4. Reply March 8, 2018 / 05:29 Simplebutcreative MediaSiteGround Team

    I actually just saw this recently. Great addition! This is useful for my multisite setup.

  5. Reply March 20, 2018 / 05:42 DorinSiteGround Team

    Great plugin! This is verry useful information.

  6. Reply July 3, 2018 / 01:21 Sandeep PariharSiteGround Team

    Yeehhh great optimizer plugins for multiple sites. that's the amazing news for WordPress developers 🙂

  7. Reply October 13, 2018 / 10:48 CorlSiteGround Team

    Hi Hristo,
    I got rather hopeful reading this article because I had tried to setup multisite last December. All went well until I found that SuperCacher doesn’t really support multisite networks. I want to enable a network that I can redirect each “child” site to its own,,, etc…
    After reading your post, I approached WordPress support see ticket where they said, “the plugin cannot work with addon/parked domains subsites and can only work on the main site.” And, “…is currently setup in a way that only supports subsites. Redirecting the domain using the domain mapping plugin would likely not work unfortunately…”
    So, If they are they correct why are you so excited about this? It’s where my multisite experiment stalled in December. Or, are you right and they simply don’t understand the new development you are writing about? Or am I just too hopeful?
    OK let's say that I can’t really use SuperCacher with multisite in the way that I need, Is there another way I can setup multisite, have all the unique domains within my plans limits and have them still be fast like a cached site?
    Still hopeful,
    Corl DeLuna

    • Reply October 15, 2018 / 00:07 Hristo PandjarovSiteGround Team

      Caching should work just fine in your case. I belive your ticket was either mishandled or posted before we've updated our system. One of our supervisors will update your ticket right away!

      • October 15, 2018 / 12:13 CorlSiteGround Team

        Hey Hristo -- Zdravko popped in on my ticket and is clearing up the confusion regarding multisite and SuperCacher. He says it works with all types of WPMU setups and you can control the caching for the individual website individually. Hope is alive!

        Thanks so much,

      • October 16, 2018 / 09:56 Hristo PandjarovSiteGround Team

        Glad you hace that sorted out 🙂

  8. Reply February 11, 2019 / 11:05 Jer ClarkeSiteGround Team

    This is great news and makes me even more eager to switch to SiteGround from Dreamhost who keep letting me down WRT caching.

    So just correct me if I'm wrong: As long as I have the "GrowBig" plan with "premium features", I'll be able to run a Multisite WP with:

    - my domain as root:
    - specific subdomains as subsites via domain mapping:
    - Other domains as subsites via domain mapping:
    - All the subsites have wp object cache and a varnish type cache
    - Other subdomains OUTSIDE this setup (i.e. no wildcard required):

    Thanks for correcting any false assumptions.


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