Fetched:
Core SEO Tags
Open Graph Tags
Twitter / X Card Tags
What Does This Tool Check?
- Canonical tag — the
<link rel="canonical">element that tells search engines which URL is the definitive version of the page - Meta robots — index/noindex, follow/nofollow directives controlling crawler behavior
- Open Graph tags — og:title, og:description, og:image, og:type used by Facebook, LinkedIn, WhatsApp
- Twitter Card tags — twitter:card, twitter:title, twitter:image for Twitter/X shares
- Hreflang — alternate language/region tags for international SEO
Common Canonical Tag Problems
- Missing canonical — search engines pick the URL themselves, often the wrong one
- Wrong canonical — pointing to a different page, causing the current page to be de-indexed
- Canonical on a redirect — if the canonical URL itself redirects, the signal is weakened
- Conflicting signals — canonical pointing one way but hreflang or sitemap pointing another
- Relative vs absolute URL — canonicals should always use absolute URLs (https://...)
Frequently Asked Questions
A canonical URL is the preferred version of a page, declared using a
<link rel="canonical" href="..."> tag in the HTML head. It tells search engines which URL to index when multiple URLs show similar or identical content, preventing duplicate content issues.Without a canonical tag, search engines will try to determine the preferred URL themselves, which may lead to the wrong version being indexed. It's best practice to always set a self-referential canonical on every page — pointing to its own URL.
The meta robots tag controls how search engine crawlers interact with a page. Common values include
index/noindex (whether to index the page) and follow/nofollow (whether to follow links on the page).Open Graph tags (og:title, og:description, og:image, etc.) control how a page looks when shared on social networks like Facebook, LinkedIn and WhatsApp. Without them, social platforms guess from the page content, often with poor results.
Our server fetches the URL directly using cURL, then parses the HTML to extract the meta tags. This means it reads the actual HTML returned by the server — the same thing Googlebot and social crawlers see — rather than running JavaScript in a browser.