Add it to a GitHub README or profile β the card updates as the ranking changes:
Find the image bytes you can save: oversized images, missing width/height, missing alt, WebP/AVIF savings, lazy-loading and LCP image issues, per page and device.
Measure how much of a page's downloaded JavaScript and CSS is actually used (Chromium coverage), with render-blocking files, never-run scripts, duplicate libraries and CI budgets.