How to fix slow page on Squarespace

Steps for Squarespace

1. Go to Pages → select a page → click the gear icon → SEO tab — review page-level settings, then run the page through Google PageSpeed Insights for specific guidance.
2. Images: When uploading images, pre-compress them to under 500 KB using a tool like Squoosh (squoosh.app) before uploading — Squarespace does not allow post-upload compression. Use Squarespace's built-in lazy loading (enabled by default on 7.1).
3. In Design → Custom CSS, remove any unused CSS rules you or a designer have added.
4. Extensions: Go to Extensions in your Squarespace dashboard and uninstall any extension not in active use.
5. Remove third-party embed codes (Settings → Advanced → Code Injection) that are no longer needed — each external script is a network request.
6. Squarespace handles CDN, GZIP, and HTTP/2 automatically. Your primary levers are image sizes, custom code injections, and page-level content complexity.

What is slow page?

Page load time is how long it takes for a visitor's browser to fully display your store page. When a page takes longer than about 3 seconds, visitors tend to leave before they even see your products — a behaviour called "bouncing." Google also directly measures loading speed as part of its Core Web Vitals scoring system, which feeds into how high your pages rank in search results. A load time of nearly 10 seconds (like the example above) is extremely slow and will hurt both rankings and sales.

Google uses Core Web Vitals — which include Largest Contentful Paint (LCP), a direct measure of loading speed — as a confirmed ranking signal. Pages that load slowly rank lower in search results, meaning fewer shoppers find you organically. Research consistently shows that every additional second of load time reduces conversion rates by roughly 4–7 %, so a 10-second page can cost you a significant share of potential sales. Slow pages also create a poor first impression, increase bounce rates, and can disqualify your pages from Google's "Page Experience" enhancements in search results. On mobile — where Google primarily indexes your site — performance issues are amplified further.

See the complete Slow page guide for every platform and the full background.