This error can occur when your page size exceeds the maximum size for a single page. Here page size is above 256 KB that’s the reason for this message. To work around this error, please select an area of content and convert it to a symbol or optimize the image, and video size. This will reduce the page size and allow it to save or publish.
Reasons to convert some content on the page to symbols just in case you haven’t worked with this before.
A symbol allows you to turn any component into reusable content that you can drag and drop onto any page.
Right, The error is not associated with Shopify. Its builder content page size limit, when the page size you built exceeds the limit of 256 KB then this message shows up and we recommend optimizing the page which cut down the page size!