Easy way to identify image sizes in 7.0?

Hi, I'm helping a photographer tidy up her self-built Squarespace site.

We're sticking with 7.0 as it really just needs a freshening up, not a complete rebuild.

I have found that some of her images are WAY too big (she didn't know about the image size guidelines), and they will be contributing to her slow site loading speed.

Because she's a photographer, there are a ton of images on her site and it will take a full day if one of us needs to check each one individually. I was wondering if, by a miraculous chance anyone knows a quick and painless easy way to identify what the image size & dimensions are of the images across her site, so I can tell her which ones will need to be resized. 

Thanks!

There are a few ways you could do this, Google PageSpeed Insights will tell you all of the images that need optimizing on a page.

https://pagespeed.web.dev/

Generally SEO checkers will help you with this, SEO Space is a new one for Squarespace that may help too.