I was debugging an SEO issue recently where Google kept indexing the wrong version of a page. Everything looked fine until I checked the canonical tag.
That reminded me how often canonical tags are either missing, pointing to the wrong URL, or generated differently across environments.
To make checking them a little easier, I built a small tool that fetches a page and shows its canonical URL in seconds:
https://mtkits.com/canonical-tag-checker
It has been useful for quickly verifying:
- Whether a canonical tag exists
- Which URL is actually declared as canonical
- Mistakes after migrations or redesigns
- Duplicate content issues
- SEO checks before deploying changes
I use it as part of my deployment checklist, especially after moving pages, changing routing, or updating metadata.
It’s a simple utility, but sometimes the smallest tools save the most debugging time.
Curious to know—what’s your go-to checklist for verifying technical SEO before shipping a website?
Top comments (0)