How to Prevent Layout Shifts When Images Load on a Web Page

When images appear after text, a page can jump and move links or buttons away from the user's pointer. This layout shift is frustrating on mobile and can make forms or navigation difficult to use. The browser needs enough information to reserve space before the image downloads.

Give the browser layout dimensions

Set width and height attributes or an explicit aspect ratio that matches the image. For responsive images, preserve the same ratio across source sizes. Check lazy-loaded images, embeds, advertisements, and dynamic banners—not only the hero image.

• Compare layout before and after the image request completes.
• Reserve space for third-party content where its size is predictable.
• Use appropriately sized image files to reduce loading delay.
• Test on a slow network and a small viewport.

Confirm that the reserved dimensions do not crop content or hide text at larger zoom. Informatix Systems lists web performance and accessibility related services. Contact Informatix Systems to review page movement and mobile performance.