Method
Escape the URL and emit <link rel="canonical" href="…">.
Generate a rel=canonical tag from a normalized URL.
Escape the URL and emit <link rel="canonical" href="…">.
Use the result as a transparent planning estimate. Change one assumption at a time, compare scenarios and move to Toolkit when you need system-level simulation.
Canonical is a signal, not a command; do not point to non-equivalent content.
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