Pagespeed Insights saying the photos can be reduced by 90% or more!

Try the remove metadata option, a lot of people miss that the first time around, and speedtests usually expect metadata to be stripped.

Hmm.. some of those images don’t have metadata, nor color profile. For example this one: https://regex.info/exif.cgi?imgurl=http%3A%2F%2Fglamourina.net%2Fwp-content%2Fuploads%2F2014%2F07%2Fego-sonia-de-nisco-oriental-suit-3.jpg

and still pagespeed says it could save 310.4KiB (92% reduction)

Ah, it’s the mobile results where you’re seeing that, because images should be properly resized and compressed for mobile delivery. No idea what options they are using there, but resizing would be the first step, as mobile devices are obviously going to have smaller screens.

Since you have a responsive theme, you can probably just resize your browser screen to get a feel for what is going on there.

All that said, resizing is outside of the scope of this plugin, there are lots of other plugins that do resizing for you if your theme doesn’t do it by itself (which apparently it doesn’t). There are plugins for extra compression too, but EWWW IO 2.0 (coming soon) will do some amazing compression (but it isn’t free, uses jpegmini).

Hi, it was a bug on pagespeed. It was giving similar results for both mobile and desktop. I wrote on the google forum and they got it repaired in 2-3 days.

Now Desktop is ok. But the problem is with mobile. And yes, pagespeed seems to be right, no bug anymore. It’s a matter of resizing the images for smaller screens :/ And yes it’s out of the scope of this plugin.

Thanks for your help.

You will need to do a few things to solve this…

Firstly you can read the original article on how to optimise wordpress images and what free plugins to use on my blog…

Or…
just take the advice without the plugins here…

Image Compression
Most people have probably got this far if they’re already dabbled in trying optimise their images on WordPress and correctly so. First and foremost you need to lose some of the added weight that your images are carrying; there are two forms of compression:

• Lossy
• Lossless

Lossy compression means that you lose quality and lossless obviously means that you lose none. While it would be wonderful if we could keep all of our images in their full glory, this just isn’t a reality if you want to please Google and make your page load as fast as it can. This means you’re going to have to embrace lossy compression; the good news is that you probably wont be able to tell the difference anyway.

Image Resizing
The next stop in WordPress Image optimisation is resizing your images. Many people are baffled after they’ve compressed their images because they’re still not getting the desired results. Your images may be compressed, but they’re still visually the same size, this carries a physical weight, so you need to make your image smaller in width and height. Many people use the “Regenerate Thumbnails” plug-in however this only does a small proportion of the job so you should use Hammy.

Lazy Loading
Although this isn’t 100% essential it does do for more added wonders for image optimisation. With lazy loading your images load once they are physically on the screen. This helps pages to finish loading faster and reduces server strain as images are only loaded if they’re viewed. Lazy loading is often performed using a jQuery. While there are plugins specifically for this, if you use Hammy it has a built in Lazy Load feature.

Local Hosting
Google doesn’t like too many requests shooting here there and everywhere so what better way to tackle this than by having all of your images automatically hosted locally? Yes, local hosting may increase server strain, but this is easily tackled by using a CDN or parallel streams so that your images are displayed faster and with less server strain.

From WordPress Image Optimisation & Free Plugins by Josh Miller (TrueMiller.com)