WebP image support now available
On 14 July 2025. Squarespace added WebP image support. WebP is a modern image format that provides superior compression for images on the web, potentially improving page load speeds for Squarespace websites, leading to improved SEO performance.
This highly anticipated feature is being rolled out on a site-by-site basis and will be available on all sites by the end of July 2025
WebP image support includes:
the ability to upload WebP images to Squarespace,
automatic background conversion of other image formats to WebP
How it Works
In addition to supporting WebP uploads, Squarespace now automatically converts image files to WebP in the background for optimal delivery. When a visitor loads your site, the CDN powering Squarespace checks the browserβs capabilities by reading the βAcceptβ header sent with the request. If the browser supports WebP, a WebP version of the image is served, even if the original file was uploaded to Squarespace as a JPEG or PNG! The original format of the image will be retained and loaded to web browsers that donβt support WebP.
You will likely still see .jpg or .png file extensions in your siteβs HTML, but this doesnβt mean WebP isnβt working. The CDN serves the most efficient format dynamically based on browser support, using content negotiation behind the scenes. You can confirm this by inspecting the image request in your browserβs Network tab. The actual file served will show a Content-Type of image/webp if WebP delivery is active.
More information
You can read more in the Squarespace support guide, Formatting images for display on the web.
