KokoSEO

Meta Tag Analyzer

Check the title, description, and Open Graph tags of any page.

On-Page Analysis

Enter a URL and get every meta tag it carries, with character lengths and a warning whenever something runs past what search results will show. Duplicate title, description, and canonical tags are called out too — those almost always mean two SEO plugins are installed at once, and the result is unpredictable.

Leaving off https:// is fine.