About this tool
Inspect pasted HTML for canonical tags and common conflicts. Inputs are processed in your browser unless a page explicitly says that it loads a helper library. ihatecalc provides estimates and utilities for general information; check source rules and assumptions for decisions with financial or legal impact.
Frequently asked questions
What does a canonical tag do?
A canonical link element tells search engines which URL you consider the preferred version when similar or duplicate pages exist.
What should this checker look for?
Review whether the pasted HTML has a canonical link, whether it has multiple canonical tags, and whether the declared URL matches your preferred page.
Can this checker fetch and inspect a live URL?
This tool checks HTML that you paste. It does not crawl or fetch the page URL automatically.