Paste any HTML head snippet and instantly test all your meta tags — title, description, robots, viewport, Open Graph, Twitter Card and more — with a live validation report.
Copy the head section of your page source — or paste just the meta tag lines you want to test — into the editor. You can also paste a full HTML page and the tool will extract the head section automatically.
The tool parses your HTML and validates each meta tag category: Essential SEO (title, description, robots, viewport), Open Graph, Twitter Card, and technical tags (charset, canonical). Missing or malformed tags are flagged with specific guidance.
Use the inline suggestions to correct any flagged issues. Re-paste your updated HTML to confirm all tags validate cleanly before deploying.
The Meta Tag Tester lets you paste any HTML and instantly validate all the meta tags in the head section. It is especially useful for testing SEO, Open Graph and Twitter Card meta tags before a page goes live, after a site migration, or when debugging why social sharing previews look wrong.
The tester validates: meta title, meta description, robots meta, viewport meta, charset declaration, canonical link, Open Graph (og:title, og:description, og:image, og:url, og:type), Twitter Card (twitter:card, twitter:title, twitter:description, twitter:image), and custom meta tags detected.
Yes — paste your page's head content and the tester immediately validates and previews your Open Graph tags. This lets you catch missing og:image tags, incorrect og:type values, or descriptions that are too long before the page goes live.
The robots meta tag controls search engine crawler behaviour. Common values are: index/noindex (include or exclude from search results), follow/nofollow (follow or ignore links on the page), noarchive (do not show cached version). Multiple directives are combined with commas.
The correct viewport tag for a responsive website is: meta name="viewport" content="width=device-width, initial-scale=1". Without this tag, mobile browsers render the page at desktop width and scale it down, producing a poor mobile experience.
The charset meta tag tells the browser how to decode the page's text. Without it, characters outside ASCII may render as garbled placeholder characters. It should be the first tag in the head section.
