Infinite Scrolling Gallery Marquee
What You'll Create
A gallery that scrolls continuously in a slow, elegant loop—completing one full cycle every 90 seconds. This creates that subtle, high-end editorial feel you see on award-winning agency sites and luxury brand portfolios. The JavaScript component solves Squarespace's lazy-loading quirk, ensuring all your images appear instantly rather than awkwardly popping in as the marquee moves past.
The Problem It Solves
Squarespace's lazy-loading system is great for performance—but it causes images to appear blank until they enter the viewport. For a marquee animation, this means jarring pop-in as items scroll into view. Most solutions either disable lazy-loading entirely (hurting your site's performance) or require bloated third-party plugins. This technique forces only the marquee images to load immediately while keeping the rest of your site optimized.
Perfect For
"As Featured In" sections showcasing press logos
Client logo bars for service providers and agencies
Partner or sponsor showcases
Product collection highlights for e-commerce
Portfolio preview strips for photographers and creatives
Testimonial photo reels
What Makes This Different
The 90-second animation duration is deliberately slow—most marquees feel rushed and distracting at 20-30 seconds. This creates movement that's subtle enough to notice but not so fast that it pulls focus from your content. The technique uses MutationObserver to catch images even when Squarespace dynamically updates the DOM, and it's section-scoped via ID selector so you can use this on one gallery without affecting others across your site.
Details
Section Type: Fluid Engine
Code Type: CSS + JavaScript
Prerequisites: Gallery Section with Grid layout. You'll need to add your section ID to the CSS selector.
Toolkit Title: Infinite Scrolling Gallery
See It In Action
Learn This Technique
This is one of 150+ code techniques taught inside Standout Squarespace, where you get:
The complete, copy-paste code
Video walkthrough explaining how it works
The principles behind the technique so you can customize it
Access to our private community for support