Which of your site icons actually exist?
Paste any URL. Iconprobe reads every icon the page declares, requests each one, and tells you exactly which files are present, which are missing, and what browsers will actually use.
How it works
No login, no dashboard, no configuration. One URL in, one structured answer out.
Paste a page URL
Any public web page. Iconprobe fetches the HTML and reads every <link> element that declares an icon — favicon, apple-touch-icon, and any size variant.
Every declared icon is checked
The tool requests each icon file and reads the bytes that come back — not just the HTTP status. It detects the real image format from magic bytes, measures the pixel dimensions, and compares it to what was declared.
Fallback locations are verified
Browsers, search engines, and iOS home screens all request icons in different ways. Iconprobe also checks the two automatic locations — /favicon.ico and /apple-touch-icon.png at the site root — even when they are not declared in the page.
One clear result table
Every icon is listed with its status, real format, dimensions, and whether it matches what the page claimed. A summary tells you what a browser tab, a search result, and an iOS home-screen bookmark would each end up using.
| Rel | Href | Status | Format | Dimensions | Matches |
|---|---|---|---|---|---|
| icon | /favicon.ico | present | image/x-icon | 32x32 | yes |
| icon | /icon-192.png | present | image/png | 192x192 | yes |
| apple-touch-icon | /apple-touch-icon.png | missing | — | — | 404 |
| icon | /favicon.ico (root) | present | image/x-icon | 32x32 | yes |
What it checks
Iconprobe is a single-purpose diagnostic tool. It inventories — it does not analyze, recommend, or monitor.
Declared icons
Every <link rel="icon">, rel="apple-touch-icon">, and size variant the page declares, with the real format detected from the file bytes.
Root fallback locations
The two files requested by convention — /favicon.ico and /apple-touch-icon.png — even when they are not declared in the page <head>.
Format verification
Detects ICO, PNG, JPEG, GIF, WebP, and SVG via magic bytes. Compares the real format against the declared type attribute.
Pixel dimensions
Extracts actual dimensions from ICO directory entries, PNG IHDR, JPEG SOF0, GIF headers, WebP VP8X chunks, and SVG viewBox or width/height attributes.
Client impact summary
A plain-English summary of what a desktop browser, a Google search result, and an iOS home-screen bookmark would each actually use — or nothing at all.
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