More than img src
Candidate source types distinguish ordinary images, lazy attributes, responsive sets, picture sources, social metadata and preloads.
Scan a public webpage for discoverable image candidates, dimensions, formats and optimization opportunities.
Audit discoverable images, dimensions, formats and optimization issues.
Private networks and metadata endpoints are blocked. Scripts are never executed.
Use the scan as a focused inventory of image references visible in one page's HTML. Candidate labels point to items worth checking; they do not replace field performance data or visual review.
Candidate source types distinguish ordinary images, lazy attributes, responsive sets, picture sources, social metadata and preloads.
There is no invented grade. The scanner exposes observations, heuristic flags and measured facts so the user keeps the final judgment.
Scanning sends the supplied public URL to the server fetch boundary. Cookies and Authorization are not forwarded, scripts are not executed and page HTML is not exposed as a generic proxy response.
Submit one public webpage URL. Private, loopback, link-local, reserved and metadata destinations are rejected across redirects.
The bounded HTML parser collects supported image references and records source type, alt text and declared dimensions when present.
Review issue labels and recommendations. Import only the candidates that need real byte and natural-dimension measurement.
It flags missing declared dimensions, very large declared dimensions, JPEG/PNG modern-format opportunities, measured files at or above 250 KB, oversized natural dimensions and possible duplicate filename variants. These are review prompts, not a synthetic performance score.
No. It reads a fetched HTML document without running scripts or rendering CSS. Client-inserted images, canvas content, CSS backgrounds and assets behind interaction may be absent.
Yes. Select supported candidates to measure and inspect them locally, then use the same worker-backed optimizer when an audit finding is worth acting on.