What are the best practices for optimizing Shopify widget load times?

To add a custom widget to your Shopify theme, start by opening your theme editor in the Shopify admin. Then navigate to "Online Store" > "Themes," then click "Actions" > "Edit code." Locate the section or template where you want the widget (like theme.liquid or a specific product template). Paste your widget’s HTML, CSS, or JavaScript code there, save it, and you’re done. Once done, preview changes before publishing to ensure everything works smoothly.