Protect the first useful view
Prioritize the content a shopper needs immediately: page title, primary imagery, price, availability and key action. Secondary reviews, related products and long-form media can wait. This keeps the page useful even before every enhancement has loaded.
Treat images as product data
Create image standards for dimensions, aspect ratios, compression and responsive variants. Oversized originals should not be sent to small screens. Use modern formats when practical and provide width and height attributes so the page does not shift while images load.
Audit third-party scripts
Each marketing, review, chat or personalization tool adds network requests and execution cost. Keep a list of who owns each script and why it exists. Remove tools that are no longer producing measurable value.
Set a performance budget
A budget turns “keep it fast” into an operational rule. Define limits for page weight, image size, script count or key performance metrics, then test important templates before releases.
Measure real templates
Homepages are not enough. Test category, search, product, cart and checkout pages because each loads a different mix of assets. Also test representative low-end mobile devices and slower connections rather than relying only on a fast development machine.
Make performance part of publishing
Performance can deteriorate even when no developer changes the core theme. New product images, campaign videos, review widgets and tracking scripts accumulate over time. Add lightweight checks to the publishing workflow: image dimensions, file size, script ownership and a quick test of important templates. This turns speed from a one-time launch project into a quality standard the content and marketing teams can help protect.