Is it working?

That is usually the case when you see ‘no savings’, but I can check a couple images for you if you can send me links to them.

“links to them” like the link of images those are uploaded to the site?

Yeah, links to the images that EWWW seems unable to optimize. You can put them on your site, or dropbox, or wherever you like. Or you can send them direct via https://ewww.io/contact-us/

Thanks. I’m sending through contact.

Before sending you those images I tried once again in my site. Gladly this is working now.
I was may be a little wrong or misleading while asking for support here. Plugin was showing it is optimizing the images but when I went to check those I found they didn’t change. That was the problem that I faced. Now everything looks OK & this is looking huge. This will be must plugin from now on. Please don’t give any limit on number of images to optimize in future. It’ll help all of us.
One more thing, will it work offline? I mean, can I try this plugin on WP sites of local XAMPP server of my desktop?

The only limits with EWWW are somewhat out of my control. Those being:
1. With some webhosts, it just doesn’t work unless you use the API. There are various reasons, some don’t have compatible servers, some don’t allow exec(), and some have a policy of only permitting the API (WPEngine).
2. The advanced lossy JPG compression options are very expensive, and so we use the API to basically “crowd-fund” the licensing for those pieces of software, like TinyPNG, TinyJPG, and JPEGmini.

As long as you’re content with the free compression, there won’t be any problems there.

As for offline, last I checked, it worked properly with XAMPP.