Thank you for a very helpful plugin. I have installed it on several client websites. However, I was unaware that it did not function in Safari and did not handle the situation gracefully until a customer complained that images could not be uploaded. Therefore, I have the following feature request:
Primarily, I would like the plugin to detect browsers that lack this capability and, in those cases, fall back and let WordPress’s default handling take over.
Alternatively, I would like the plugin to detect browsers that lack this capability and prompt the user to use a different browser.
+1000 This is an incredible plugin… as long as you have 100% control over all authors on your site!
Our site has hundreds/thousands of users who might upload something. I would love to use Cimo but as long as the Safari outcome is that it’s just broken, I can’t even think about installing it.
The solution needs to be that if it’s not going to work, it’s simply disabled and the upload happens as it would normally. Maybe with a warning that it’s not optimized, but not with anything that blocks uploads from happening normally.
Please! It’s such a great idea, but for now a lot of sites won’t be able to enjoy it.
@tbarregren & @jerclarke Thanks for the report. Your proposal is actually the intended behavior when uploading via Safari (uploads would normally work like nothing is optimized). However, there was a bug that prevented this from happening.
I’ve just released an update v1.1.1 moments ago that should fix this issue!
I believe it you should be able to use with other image optimizers, the way Cimo works is that WordPress just thinks you uploaded an optimized image (except for Safari). However, I do not know what the other image optimizers would do if they the image uploaded was already optimized.. would they optimize them again?
Just tested it and Safari is working again, uploading as normal (Safari 26.0.1 on macOS 15.7.1.
Though for some reason I’m getting a new bug: On Chrome every upload is showing up twice, seemingly with the original upload and then the Cimo version:
As you can see, the most recent image is there twice, first the original JPG image, then the optimized WebP.
Really strange! Is this something specific to me?
I also tried it in an empty Chrome “profile” with no extensions installed, and using a site with almost nothing installed, and got the same result.