Support » Plugin: Smush Image Compression and Optimization » Website hangs while works

  • Resolved danbrady


    While is working (compressing an image), the website hangs for all users until the ‘smushing’ is complete. This is usually several seconds, and isn’t great.

    When I select 20 images in the media library and ‘bulk smush’ them, the whole website hangs for all users for up to a minute. Which is unacceptable.

    The site I’m working on now has ~30k images, which according to my estimates might take ~20 hours to smush if I did them all in bulk. That’s 20 hours of downtime for the site, which is obviously not even worth considering.

    FYI the site is running WooCommerce, the images are product images (6 sizes in total for each image) and it’s all running on a powerful dedicated server with 16GB RAM.

    Why is eating up all the resources? Why can’t it run in the background using a smaller amount of resources, even if it this means it smushes more slowly, but allows the website to function as normal?

Viewing 4 replies - 1 through 4 (of 4 total)
  • Hi @danbrady,

    Thank you for your question.

    I just tested it using latest version of WP plugin & WordPress 3.8.1 and i worked fine without any issue.

    Could you please test and confirm it on your other site?

    You can just try on your development site deactivating all other plugins and using default WordPress theme like Twenty Twelve as displayed in the flowchart on the following page to know which theme/ plugin is conflicting if any.

    Kind Regards,

    Hey there.

    We haven’t heard from you in awhile, so I just wanted to check in to make sure all was good.

    This thread was marked resolved, but please, if you still need help then just respond and open it back up. We can then take it from there. 🙂

    Hope you have a fantastic day!



    I’m having exactly the same experience, only worse! Not only does Smushit cause the site to hang, it doesn’t work – I get “bad response from Smushit” on every image.

    I use Smushit on SIX other WordPress sites no trouble at all, and have for years. This site is the only one using WooCommerce and the only one that has a problem.



    WPMU DEV Support Staff

    Hi there @thea,

    Thanks for posting on this. Could I ask for you to try it with WooCommerce deactivated?

    That’ll help us to determine if it’s related to a conflict with that.

    Also, would you happen to know how much memory you have on your site/server?


Viewing 4 replies - 1 through 4 (of 4 total)
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