Canonical URL Checker

Audit webpage <link rel="canonical"> tags, relative URL resolution, HTTP Link response headers, self-referencing vs cross-domain canonicals, and Open Graph alignment.

Popular examples: https://google.comhttps://github.comhttps://wikipedia.org
Fetching Webpage & Auditing Canonical URLs…

Resolving relative URLs, checking HTTP response headers, and testing canonical targets.

Canonical Health Score

100 / 100

Evidence-Based
Canonical Type

Self-Referencing

Matches Page URL
HTML Tag Count

1 Tag

Declared in <head>
HTTP Link Header

None

Response Header
ElementDetected URL ValueStatus
<link rel="canonical">—Primary
Resolved Absolute URL——
HTTP Link Header——
Open Graph (og:url)——
Exact detected HTML canonical element parsed from webpage <head> section:
<link rel="canonical" href="...">