I'm creating a new site using Lay and noticed a few things for SEO that may help!
I'm using Yoast's SEO plugin, which does a great job of adding titles and meta data to each page.
1-IMG alt tags seem to get removed from resized images and in the Carousel. If you could always have the alt tag for images in the gridder and in Carousel that'd be wonderful.
2-One way a lot of my users share data is by saving an image from the site and then uploading it elsewhere. I'm able to save images on desktop Chrome, but when on mobile, I can't save images on iOS Chrome and iOS Safari. The option pops up to save image, but when I click, it doesn't save (or saves the transparent png file).
I hope this is useful. Thanks again for a beautiful theme!