RaulSantos

Dear Paul, I have similar performance problems with my page. I'm using analysing platforms such as Sistrix or PageSpeedInsights, and they all say the same: Reduce unused JavaScripr or try to bundle the Script applications. I'm a bit fed up when Squarespace is saying there can't be done anything. We're paying money for the service!

I think the feeling in the thread @paul2009 is that it is quite disappointing that this de facto standard web image format is not already supported by a platform whose entire marketing is based on promoting itself as a cool, modern web design platform. It shouldn't be up to the users to request something that is pretty much a web standard now. I can't for a minute imagine the SS product managers are unaware of the importance of next gen image formats!
It's just so disappointing that someone high up in Squarespace clearly doesn't get it and is not prioritising it.

With all browsers supporting WebP, and Google prioritizing image loading speed in rank, I certainly hope Squarespace will provide the ability to host these images - which are quickly becoming an industry standard.

Hi Tuanphan! It worked for me. I was trying to figure it out how separate a bit the columns. 
Thank you!

Add to Page Settings . Advanced > Header
If you use Personal Plan > You can edit Page > Add Code Block
<style> @media screen and (max-width:640px) { .sqs-block-summary-v2 .summary-item.positioned { width: 50% !important; position: static; } .sqs-block-summary-v2 .summary-item-list { display: flex; flex-wrap: wrap; flex-direction: row; } } </style>