Does it work with multisite?

Well, everything else works multisite, but there is only one ewwwioimages table in the database, so all sites would query the same one for total savings. Never bothered to check that. I’ll have to look into it.

Hold that thought, I just re-read your question and realized what you’re describing. It would only check the first ewwwio_images table, and as I’ve already said, each site gets it’s own table.

And just to be clear, that means it doesn’t work as expected, and I’m going to find a fix.

Fixed in dev: https://downloads.www.ads-software.com/plugin/ewww-image-optimizer.zip

Also caught another bug where it was double-counting the first 1000 images. My testing site returns 0 for the first 1000 images (because they’ve been re-optimized like crazy), so I never noticed it until I tested on my multi-site install, where I only have 650 images total.