An image-focused PageSpeed checklist for developers
Audit website images in a useful order: inventory, dimensions, format, loading, layout stability, and deployment verification. Includes an evidence worksheet.
Image optimization,
explained.
For the people building a faster web. Practical guides to lighter images, better delivery, and the audits that point you in the right direction.
Find image problems, prioritize fixes, and verify what the browser receives.
Reduce image weight behind “Avoid enormous network payloads”
Prioritize aggregate image transfer in heavy pages, distinguish images from script weight, and build a manageable replacement batch with real byte evidence.
What a website image scanner can find, and what needs a browser
Understand HTML image discovery, lazy source hints, srcset candidates, fetch limits, and the difference between a static inventory and a rendered performance audit.
Why an image URL opens in your browser but fails to compress
Diagnose CORS and canvas export failures, distinguish public image URLs from authenticated resources, and use a safe browser-first retrieval workflow.
How to find large images on a website
A useful audit separates transfer weight, intrinsic pixel dimensions and rendered size. One number cannot tell you whether an image is actually a problem.