A Core Web Vitals checklist that survives a redesign
A redesign changes markup, images and third-party scripts at the same time, so regressions hide behind each other. Teams measure the homepage, see a green score and ship - then watch template-level pages quietly fall behind.
The fix is unglamorous: measure the templates, not the pages, and set a budget each template must meet before launch.
“Good SEO makes a brand findable. Great SEO makes it the obvious answer - the page a buyer trusts before they ever speak to sales.”
The pre-launch checklist
Confirm the largest element in the viewport is a server-rendered image or heading, preloaded and correctly sized. Reserve space for every image, embed and ad slot so layout never shifts. Defer anything that isn't needed for first render, and audit third-party tags against the value they actually return.
Finally, run the checks on a throttled mobile connection. Desktop numbers on office wifi will pass almost anything.
Keeping it fixed
Add a performance check to your release pipeline with a failing threshold. Monitoring after launch tells you what broke; a budget in CI stops it merging in the first place.
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