Validate title, description, Open Graph, Twitter Card, and other meta tags on any page.
Enter a URL and the Meta Tag Validator downloads the page's <head> section and reports which SEO-critical meta tags are present, missing, or badly sized. It checks the title (ideally 50-60 characters), meta description (120-155 characters), Open Graph tags (og:title, og:description, og:image, og:url) that control how the link looks when shared on Facebook or LinkedIn, Twitter Card tags, the canonical link, the viewport tag for mobile, charset, and the robots directive. Each tag becomes a pass, warning, or error, and everything combines into a 0-100 score so you fix the errors first and ship a page whose head is fully optimized.
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Quick answer
Enter a URL and the Meta Tag Validator downloads the page's <head> section and reports which SEO-critical meta tags are present, missing, or badly sized. It checks the title (ideally 50-60 characters), meta description (120-155 characters), Open Graph tags (og:title, og:description, og:image, og:url) that control how the link looks when shared on Facebook or LinkedIn, Twitter Card tags, the canonical link, the viewport tag for mobile, charset, and the robots directive. Each tag becomes a pass, warning, or error, and everything combines into a 0-100 score so you fix the errors first and ship a page whose head is fully optimized.
What is Meta Tag Validator?
The Meta Tag Validator fetches a page's raw HTML and inspects every meta tag that influences search rankings and social sharing — the title, meta description, Open Graph properties, Twitter Card tags, canonical link, viewport, charset, and robots directives. It grades each tag on presence and, for title and description, on character length, then rolls the results into a single SEO score (0-100) so you can see at a glance whether a page's head section is publish-ready. Because search engines and social platforms read these tags before they ever render your content, a missing or mis-sized tag can quietly cost you clicks even when the page itself is excellent.
How to use Meta Tag Validator
1
Paste the page URL
Enter the full URL of the page you want to inspect, including the https:// prefix. The tool fetches the live server-rendered HTML and reads its <head> section.
2
Read the score and error list
Start with the red errors — a missing title, missing description, or accidental noindex are the items most likely to hurt rankings or indexing. Warnings such as a too-long title come next.
3
Check the social preview tags
Scroll to the Open Graph and Twitter Card section to confirm og:image and og:title exist and point to the right values, so shared links render with the intended headline and thumbnail.
4
Fix the tags and re-validate
Update the tags in your CMS or template, redeploy, then paste the URL again to confirm the score has climbed and the errors have cleared.
Try it when you need to…
Try it when a page ships to production and you need to confirm nothing in the head section is missing before you request indexing
Try it when a shared link renders with the wrong image or headline and you suspect broken or absent Open Graph tags
Try it when a page refuses to appear in Google and you want to rule out a stray noindex robots directive
Use cases
Run a final pre-launch check on a new landing page so it doesn't go live with a missing meta description or an empty Open Graph image
Diagnose why a shared link on LinkedIn or Facebook shows the wrong headline or a broken thumbnail by verifying the og:title and og:image tags
Confirm a page carries a self-referencing canonical tag so duplicate URL variations (with tracking parameters, trailing slashes, or www) don't split ranking signals
Verify that a page you want indexed is not accidentally shipping a robots noindex directive left over from staging
Audit a batch of product or blog pages after a CMS migration to catch templates that dropped the viewport or charset tag
Key features
✓Title and meta description length analysis with the recommended 50-60 and 120-155 character ranges flagged
✓Open Graph validation covering og:title, og:description, og:image, og:url, and og:type for correct social previews
✓Twitter Card detection including twitter:card, twitter:title, and twitter:image
✓Canonical link, viewport, charset, and robots (index/noindex) directive checks in one pass
✓A weighted 0-100 SEO score that separates blocking errors from lower-priority warnings
Tips & best practices
og:image needs an absolute URL (https://example.com/image.jpg), not a relative path — Facebook and LinkedIn cannot resolve relative image paths and will show no thumbnail.
Facebook and LinkedIn cache Open Graph data aggressively. After fixing og tags, re-scrape the URL in Facebook's Sharing Debugger or LinkedIn's Post Inspector to bust the cache, or the old preview will persist for days.
A title that reads well in the browser tab may still be truncated in search results because Google measures pixel width, not character count — capital letters and wide letters like W and M eat space faster.
If Open Graph tags are missing, most platforms fall back to the <title> and meta description, so those two tags do double duty for both search and social; never leave them empty.
Frequently asked questions
A score of 80 or above means your essential tags — title, description, canonical, viewport, and social tags — are present and correctly sized. Fix red errors (missing or empty tags) first because they have the largest impact, then clean up warnings like an over-length title. A perfect 100 usually requires complete Open Graph and Twitter Card sets in addition to the basics.
Aim for a title of 50-60 characters and a meta description of 120-155 characters. Titles longer than about 60 characters get truncated with an ellipsis in Google's results, and descriptions past ~155-160 characters are cut off. Too short is also a missed opportunity because you leave SERP real estate — and persuasive space — unused.
No. Google confirmed years ago that it ignores the meta keywords tag entirely, and stuffing it can even look spammy to some systems. The tags that actually matter are title, meta description, canonical, robots, viewport, charset, and the Open Graph and Twitter Card sets.
Social platforms cache the first Open Graph data they scrape. Even after you fix the tags, Facebook and LinkedIn keep serving the cached preview until you force a re-scrape using Facebook's Sharing Debugger or LinkedIn's Post Inspector. The validator reads the live HTML, so it will show the corrected tags before the social cache catches up.
Open Graph (og: prefix) is the protocol Facebook created and is now honored by LinkedIn, Slack, Discord, WhatsApp, and most platforms. Twitter Cards (twitter: prefix) are X/Twitter's own format. Twitter falls back to Open Graph tags when its own are absent, so at minimum ship complete og tags and add twitter:card only if you want a specific card style.
It reads the server-rendered HTML that arrives in the initial response, which is exactly what social crawlers and most search bots parse. If your meta tags are injected client-side by JavaScript after load, social scrapers generally won't see them, so this tool correctly reflects the risk. For reliable results, render SEO-critical meta tags server-side.
Yes, indirectly but importantly. The viewport meta tag (width=device-width, initial-scale=1) is what makes a page responsive on phones. Google indexes mobile-first, so a page without a proper viewport tag can be judged not mobile-friendly, which suppresses rankings on the mobile results that now dominate traffic.