Support » Plugin: SG Optimizer » Image Optimizations are sub-par

  • Resolved happysnailonarockeatinganapple


    In my test, I uploaded a 3024×4032 1,670KB image and enabled the option for new uploads to be optimized automatically. After optimization, I downloaded the image in the same resolution and noticed the size was reduced to 1,317KB. As a comparison, I used which reduced the original file size to 412KB maintaining the same image resolution. There are no differences in quality among any of these files, based on what I can tell from the best of my abilities. Perhaps add an ‘advanced’ option for the image optimizer for greater control?

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  • Plugin Author Stanimir Stoyanov


    SiteGround Representative

    Hey @happysnailonarockeatinganapple

    Thank you for the suggestion! We’ve tested a lot of images before we release this optimization and our tests showed us that the best percent of optimization is 85%. If we reduce the percent, the size is smaller, but the quality is not the same. We don’t think adding an advanced option, where you can choose the percent is a good idea. What we are doing is to replace the original image with optimized and you can imagine what would happen if someone try optimization with very low percent.

    We will consider adding a filter, where really advanced users can hook and change the percent. Hope that this will work for you 🙂

    Meanwhile other suggestions would be highly appreciated. We are continuously trying to improve our plugin for the needs of our clients.




    I agree with you that ease of usability should be at the forefront of this plugin, and introducing additional features adds unnecessary complexity. That’s one of the main reasons why I like this plugin — it’s simple. Perhaps adding an advanced section for users isn’t the best solution.

    I should opt for using the WebP format for my images. I’m also interested in the comparison of compression between this plugin and Google’s guetzli.

    In any case, thank you for taking the time to reply to my inquiry.

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