Meta Tag Checker

Paste the URL into the checker above. It fetches the page, reads every meta tag in the head, and shows them with character counts and length warnings, alongside previews of how the page appears in Google and on social platforms. No account is needed and it works on any public page.

Two things have to be true: the tags exist, and they contain what you expect. The report above confirms both, and the previews show the result rather than just the raw values. "Working" usually fails at the second step, most often a canonical pointing somewhere wrong or an og:image using a relative path.

Enter the URL above and the report lists every tag found, plus the notable ones that are missing. Manually, you can right-click a page and choose View Page Source, then look inside the head element, though that means reading raw HTML rather than a formatted report.

In any browser, View Page Source and read the head section. Every meta tag lives there. The tool above does the same fetch and formats the result, which is faster when you want character counts, missing-tag warnings and social previews rather than raw markup.

With this tool, or any similar online meta tag checker. Everything needed is in the public HTML, so no login or verification is required for any site. That also means you can inspect a competitor's tags exactly as easily as your own.

For web page meta tags, this one shows the full tag list, the missing tags and the social previews together with no sign-up. Note that metadata viewer can also mean EXIF data in photos or document properties in a PDF, which are different things entirely and need different tools.

A local URL such as localhost cannot be reached by any online checker, including this one, because the page only exists on your machine. Either view source in the browser, or expose the site through a tunnelling tool to get a temporary public URL and check that.

Some of them, yes. The title tag matters a great deal, the meta description is a snippet candidate rather than a ranking factor, and the robots meta tag directly controls indexing. The meta keywords tag has been ignored since 2009. So the answer depends entirely on which tag is meant.

A meta description looks like this: <meta name="description" content="A short summary of the page">. All meta tags follow that shape, a name or property saying which tag it is and a content attribute holding the value, and they all live inside the head element.

The common ones are title, description, robots, viewport, charset and canonical, plus the Open Graph family (og:title, og:description, og:image) and the Twitter family (twitter:card, twitter:title, twitter:image). The report above separates them into those groups.

To describe a page to software rather than to the person reading it. Search engines use them to understand and display the page, social platforms use them to build a card, and browsers use them to render correctly on mobile. None of them are visible on the page itself.

The ones that affect how a page is found and displayed: title, meta description, canonical and meta robots. Everything else is either social (Open Graph and Twitter) or technical (viewport, charset). If you only maintain four tags, those four are the ones.

They give search engines instructions about a single page. noindex keeps the page out of results, nofollow stops link authority passing from it, and there are others such as noarchive and nosnippet. The checker above calls out noindex and nofollow explicitly, because both are easy to leave on by accident.

robots.txt controls crawling for the whole site and lives at the root. The meta robots tag controls indexing for one page and lives in that page's head. The important consequence: a page blocked in robots.txt can still be indexed if other sites link to it, because the crawler never reads the noindex tag it was blocked from fetching.

It names the preferred version of a page when the same content is reachable at several URLs, for example with tracking parameters or with and without a trailing slash. The canonical tag tells search engines which one to index, so the others do not compete with it.

Yes, and mistakes with them are costly. Used correctly they consolidate duplicate URLs into one. Used wrongly, most commonly every page canonicalising to the homepage from a template error, they tell search engines those pages are not worth indexing. That is a quiet way to lose a whole section.

The report above shows the canonical for any URL, resolved to an absolute address so you can see exactly where it points. Manually, view source and look for a link element with rel="canonical" in the head.

The Facebook and LinkedIn preview above renders og:image exactly as those platforms would, so a broken or missing image is immediately visible rather than something you discover after posting. If the image slot is empty, the usual cause is a relative URL, since social crawlers require an absolute one.