SG Optimizer – Our WordPress Plugin

In 2012 we released a SiteGround WordPress plugin. Its purpose was to connect the WordPress installations of our users with our caching service - the SuperCacher. For many years all updates we have made to the plugin were only related to the caching functionality. However, in the last few months we have added two completely new functionalities (HTTPS switch and PHP 7.0 updater) and have changed the plugin name to SG Optimizer. To learn more about what is now included in the SG Optimizer read below.

Make your site faster with our SuperCacher

So, can you still use the plugin to configure your SuperCacher? Yes, and we highly recommend you do! As always, in order to take advantage of the dynamic caching and increase drastically the performance of your site you need to: use GrowBig or a higher hosting plan, switch on the service from your cPanel, and then switch on the service in the SuperCacher Config section of the SG Optimizer plugin. To learn more refer to our detailed SuperCacher tutorial.

Configure HTTPS connection with a click

You can also use the SG Optimizer to enable HTTPS with a single click. We’ve been automatically installing Let’s Encrypt certificates to all new domains since the end of 2016 and we wanted to make it possible for everyone to easily and effortlessly enable HTTPS for their WordPress site. The moment your site starts working through https, the HTTP2 protocol kicks in automatically since it’s enabled on all SiteGround servers. This means that on top of having your website loaded in compliance with the latest Google and Chrome encryption requirements you will also receive performance benefits that come from using the HTTP2 protocol.

Check and update your PHP Version

We’ve already written few blog posts on this topic but I can’t get tired of emphasizing the amazing performance boost that using PHP 7.0 and above gives to your site. In a major effort to increase the use of PHP 7.0 or higher for the sites of our WordPress users, we've developed the third major functionality to the SG Optimizer. Thanks to this new addition you can check if your site is compatible with PHP 7.0, and upgrade to it right from your WordPress admin panel. See more in our detailed PHP 7.0  blog post.

As you can see all the functionalities in the SG Optimizer plugin help you use the systems and resources available on the SiteGround servers in order to make your WordPress faster and safer. If you have not installed the plugin yet, we strongly recommend you do it now!

Product Development - Technical

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 April 5, 2017 / 06:28 GuidoSiteGround Team

    Hi Hristo! Did the SG team eventually fix the issues with the PHP7 checker? Namely, the fact that it relies on WP cron and the fact that it often hangs.

    • Reply April 6, 2017 / 01:49 Hristo PandjarovSiteGround Team

      The plugin runs well on the majority of cases. I wouldn't say it's often causing issues. Sometimes, restrictive plugins, sites with very high number of plugins etc. interfere with it's work but in such cases our support team can step in and help you out with the check and switch 🙂

  2. Reply April 6, 2017 / 15:06 EoinSiteGround Team

    Is there a Joomla! version?

    • Reply April 10, 2017 / 00:25 Hristo PandjarovSiteGround Team

      I am afraid that we don't have the full functionality added to our Joomla plugin yet.

  3. Reply April 6, 2017 / 20:34 FedericoSiteGround Team

    Then, I don't these 2 plugins? Really Simple SSL and WP Super Cache? Please send me yiour comments, would appreciate them.

    • Reply April 10, 2017 / 00:26 Hristo PandjarovSiteGround Team

      Yes, you can disable both if your Dynamic cache is configured properly and SSL switch is turned on in SG Optimizer.

  4. Reply April 6, 2017 / 21:14 ChrisSiteGround Team

    How much of a speed increase can you expect from using the SG Optimizer?

    • Reply April 10, 2017 / 00:27 Hristo PandjarovSiteGround Team

      Using our Dynamic caching has dramatic effect on the loading speeds of the majority of sites. Of course, it depends on the actual website, what plugins it uses, how well it's written, etc.

  5. Reply April 6, 2017 / 23:56 VerdiSiteGround Team

    Really awesome that you keep innovating / improving your services. Especially when they are as tangible as this. Thank you guys!

  6. Reply April 7, 2017 / 06:11 SanderSiteGround Team

    Good News! I'm curious about further development. When will we be able to use mod page speed together with the caching options. Also when will siteground fix the conflict between mod page speed and pages containing contact form 7 forms?

    • Reply April 10, 2017 / 00:28 Hristo PandjarovSiteGround Team

      It's actually PageSpeed that has issues and unfortunatelly I don't see this happening any time soon. I am curious about Contact Form 7 though. I manage the plugin and all support queries for it but you're the first to mention such things, could you elaborate?

  7. Reply April 7, 2017 / 06:41 PavelSiteGround Team

    Hi hristo,

    the SG caching system really brings the results. Thank you for that.

    We wanted to use the plugin for easy HTTPS transition but had to leave it thoug. The problem was that it redirected not only the site links but also all off-site links to https which is unusable if some of those go to http only sites. In my opinion, the plugin should not touch the off-site links.

    Is there any development in that?


    • Reply April 10, 2017 / 00:29 Hristo PandjarovSiteGround Team

      If offsite resources aren't set to HTTPS you will get the Insecure Content warning on your site so it will not work anyway. That's why we've decided to rewrite those too.

  8. Reply April 7, 2017 / 08:12 ToniSiteGround Team

    I have W3 Total Cache installed on my WP site but would love to move to Super Cacher. I read uninstalling W3 completely is very difficult and requires deleting specific files and not just deactivating and deleting it from my plug-in pane.

    I would love to take advantage of HTTPS and other performance enhancing tools. Will SG Customer Service help me remove W3 as part of my hosting plan?

    • Reply April 10, 2017 / 00:30 Hristo PandjarovSiteGround Team

      Sure thing, just open a ticket in your Help Desk and ask my colleagues to completely uninstall W3TC, clear all caches and configs and set the SG Optimizer for you 🙂

  9. Reply April 7, 2017 / 12:10 Gary McHughSiteGround Team

    Love it but would like to see an option to turn off auto flush before I get rid of WP rocket.

    • Reply April 10, 2017 / 00:25 Hristo PandjarovSiteGround Team

      WP Rocket does a lot of good things optimizing your website that SG Optimizer does not like minifying your JS and CSS files. Note, that we do have auto flush for our plugin so if you only modify content you shouldn't have to do that manually.

  10. Reply April 7, 2017 / 16:47 SterlingSiteGround Team

    does the plugin do a 301 redirect of your domain to https?

    • Reply April 10, 2017 / 00:31 Hristo PandjarovSiteGround Team

      Yes, we add a rule in the .htaccess file that handles the redirection.

  11. Reply April 8, 2017 / 14:36 Ron WenSiteGround Team

    Ahh I've run into the same issues, scan never completes. Thanks for the answer Hristov!

  12. Reply April 8, 2017 / 14:49 MurtuzaSiteGround Team

    I tried to upgrade one of my client's website to php 7 using this plugin which brought messed up the entire wordpress install and i had to reinstall to get the website working again. The plugin did the checks and said the website is compatible with php 7 but still it didn't work.

    • Reply April 10, 2017 / 00:33 Hristo PandjarovSiteGround Team

      Please post a ticket in your Help Desk or switch the PHP Version manually from the PHP Version Manager tool in cPanel.

  13. Reply April 9, 2017 / 23:45 RaySiteGround Team

    If I install SG Optimizer on my SG hosted site, I should then get rid of my other caching plugins? I currently have WP Super Cache running.

    • Reply April 10, 2017 / 00:32 Hristo PandjarovSiteGround Team

      Yes, if the Dynamic Caching is enabled and configured, it will outperform any full page plugin including WP Super Cache.

  14. Reply April 17, 2017 / 23:11 AangSiteGround Team

    I would prefer the use of the SG Optimizer, how would I configure the CDN as it is part of the W3TC configuration.

    • Reply April 18, 2017 / 00:39 Hristo PandjarovSiteGround Team

      You can still use both. Just disable all caching functionality from W3TC and keep the CDN integration on.

  15. Reply April 19, 2017 / 21:16 BarayudaSiteGround Team

    Hi thanks for the post. If I testing the URL, and get NOT CACHED, what can I do? to make sure the URL cached?

    • Reply April 20, 2017 / 07:25 Hristo PandjarovSiteGround Team

      First, make sure that the Dynamic caching is enabled in the SuperCacher tool in cPanel (the second tab). Then, you can use the cache status tool in the SG Optimizer plugin in your WordPress admin panel. If it says NOT CACHED, open a ticket in your Help Desk and our support team will tell you what's blocking our system from serving cached results.

  16. Reply April 20, 2017 / 04:11 Easy tailor AppSiteGround Team

    Really awesome that you keep innovating .


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