How Does Native Lazy Loading Work in Webflow, and When Should I Turn It Off in 2026?

Why does the browser wait to load some of your images?

Lazy loading tells the browser to hold off on downloading an image until the visitor is about to reach it. Instead of grabbing every image the moment the page opens, the browser loads what is on screen and delays the rest. This saves data and makes the first view appear faster. In Webflow, most images carry this setting out of the box.

I like this default for most of a page. A long service page might have twenty images, and a first-time visitor may never scroll to half of them. Loading all twenty up front wastes their data and slows the page for no reason. Lazy loading fixes that quietly. The trouble starts when the setting is applied to the wrong image, and that one wrong image is often the most important one on the page.

What is native lazy loading, in plain terms?

Native lazy loading is a browser feature built into HTML. It works through a small attribute on the image tag called loading, which can be set to lazy or eager. When it is lazy, the browser decides when to fetch the image based on how close it is to the viewport. You do not need any script or plugin to make it work.

This used to require extra JavaScript and a tool called IntersectionObserver. Now the browser handles it on its own. Chrome, Firefox, Safari, and Edge all support the loading attribute, so the behavior is consistent across the browsers your visitors actually use. Webflow builds this attribute into the image settings, so you are choosing between lazy and eager even when you do not realize it.

How does Webflow handle this by default?

Webflow sets images to lazy load by default, with a setting you can change on each image. When you drop an image onto the canvas, Webflow adds the lazy behavior for you. In the image settings panel, you can switch the loading option to eager or lazy, depending on where the image sits on the page. Background images follow different rules and are not controlled by this attribute.

Because it is on by default, the setting is easy to forget. Most days that is fine. The default is a sensible choice for the great majority of images on a site. But defaults are made for the average case, and your hero image is not the average case. That is the one place I check by hand on every build.

When does lazy loading hurt more than it helps?

Lazy loading hurts when it is applied to your largest above the fold image, usually the hero. That image is often what Google measures as your Largest Contentful Paint, one of the Core Web Vitals. If the browser waits to load it, your LCP time gets worse, and a slow LCP can drag on both the visitor's first impression and your search performance.

This is the most common performance mistake I find on Webflow sites during audits. The hero image, the first big thing a visitor sees, is set to lazy. The browser treats it like a footer image and delays it a beat. That beat is exactly the moment the visitor is deciding whether the page feels fast. I dig into how I catch these without heavy tools in how I audit Webflow sites for LCP issues without Lighthouse.

Which images should load eagerly instead?

Any image visible when the page first opens should load eagerly. That means the hero image, a logo in the header if it is a real image, and anything else sitting above the fold on a normal screen. For these, I set the loading option to eager so the browser fetches them right away, with no delay.

Everything below the fold can stay lazy. Testimonials further down, images in a long article, product shots near the bottom of the page, all of these are fine to defer. The rule I keep in my head is simple. If a visitor sees it in the first second, load it now. If they have to scroll for it, let the browser wait. That one habit protects LCP without any code.

How do I know if lazy loading is slowing a page down?

I check the LCP element in a performance report and see whether it was delayed. Tools like Lighthouse and Google PageSpeed Insights will name the element that counts as your Largest Contentful Paint and show how long it took. If that element is your hero and its load starts late, lazy loading is a likely cause. Field data from the Chrome UX Report tells the same story from real visitors.

I do not obsess over a single lab score, since those bounce around. I look for a pattern across real users. If the hero keeps loading late, I switch it to eager and test again. Lazy loading is not the only thing that affects this. Image size and format matter too, which is why I pair this with the responsive image work I covered in how Webflow's responsive images and srcset help Core Web Vitals.

Does lazy loading affect layout shift?

It can, if the image has no reserved space. When a lazy image loads late and the page has not saved room for it, the content around it can jump, which shows up as Cumulative Layout Shift, another Core Web Vital. The fix is to make sure every image has a set width and height so the browser holds its place before the picture arrives.

Webflow usually handles this well because it keeps image dimensions, but custom embeds and background swaps can still cause a jump. I treat layout shift as its own problem and check it separately, which I wrote about in how I reduce Cumulative Layout Shift on a Webflow site. Lazy loading and layout shift are cousins. Fixing one badly can worsen the other.

So what is my simple rule for Webflow images?

My rule is that below the fold images stay lazy, and the hero loads eagerly, every time. I let Webflow's default handle the long tail of images down the page, and I hand set the one or two images a visitor sees first. This takes about a minute per page and removes the most common performance mistake I see.

If your Webflow site feels slow on the first paint and you are not sure why, start with the hero. Open its settings, check whether it is set to lazy, and switch it to eager if it sits above the fold. That small change often buys back the speed you were missing. If you want a second set of eyes on your site's performance settings, I am happy to take a look. Reach out and let's chat.