Cross-origin pages are fetched through public CORS proxies (corsproxy.io, allorigins.win) — the proxy sees the URL you inspect. You can also link here with
?url=…
Inspect a website’s favicons: every way a site can declare them (icon link tags, apple-touch-icon, mask-icon, web app manifest, Microsoft tiles, well-known paths) plus what Google’s and DuckDuckGo’s favicon services return. Shows how each icon was found, its real format and size, and downloads any of them as PNG.
?url=…