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Twitter Card Checker

Validate Twitter Card meta tags and preview how your page will appear when shared on Twitter/X.

Twitter Card CheckerGratisOn-Page SEOChecks a live URL

Enter a public URL. We fetch the live page and analyse what search engines and AI crawlers see.

Key features of the Twitter (X) card checker

  • Checks twitter:card, twitter:title, twitter:description and twitter:image
  • Card preview with image, title and description
  • Falls back to Open Graph tags the way X does
  • Shows the exact value of each tag
  • Works on any public URL

How to use the Twitter (X) card checker

  1. Enter the URL

    Paste the address of the page you plan to share.

  2. Run the check

    The tool fetches the page and reads its Twitter and Open Graph tags.

  3. Read the preview

    Check the title, description and image in the card preview.

  4. Fix missing tags

    Add any missing tags to the page's <head>: at minimum twitter:card, plus a title, description and image (Twitter or Open Graph).

  5. Re-check and share

    Run the check again, then paste the link into the X composer to see the live card before you post.

What is a Twitter (X) card checker?

A Twitter card checker, often called an X card validator, reads the meta tags that control how a link looks when it is posted on X. Enter a URL and this tool fetches the page, shows a preview of the card and checks the four core tags: twitter:card, twitter:title, twitter:description and twitter:image.

Each tag is marked present or missing, with its value. The preview uses the Twitter tags first and falls back to og:title and og:description when they are missing, which is also what X does. twitter:card sets the layout: summary shows a small square image beside the title, and summary_large_image shows a wide image above it.

Limits: the preview approximates X's layout. X caches cards, crops images its own way, and may not show a card if the image is blocked or too large. The tool reads the HTML before JavaScript runs, so tags added by JavaScript are not seen, and X's crawler doesn't run JavaScript either.

Why use a Twitter (X) card checker?

X's own Card Validator no longer shows a card preview, so checking the tags first is the easiest way to avoid posts that show a bare link, no image or the wrong title. Those posts get fewer clicks than a full card.

Twitter (X) card checker: frequently asked questions

Something else? Ask the team

Does X still have a Card Validator?

X's Card Validator no longer shows a card preview. To see a card before you post, use a checker like this one, or paste the link into the X composer, which shows the card once X has fetched the page.

Which tags does a Twitter card need?

twitter:card is needed to choose the layout (summary or summary_large_image). The title, description and image can come from twitter:title, twitter:description and twitter:image, or from the matching og: tags when the Twitter ones are missing.

What image size works for a summary_large_image card?

Use an image with a 2:1 ratio, such as 1200×600 px (at least 300×157), under 5 MB, in JPG, PNG, WebP or GIF format. For the summary card, use a square image of at least 144×144 px.

Why isn't my card updating on X?

X caches card data for about a week. After fixing the tags, older posts may keep the old card; sharing the URL with a query string such as ?v=2 makes X fetch it as a new link.

Is a Twitter card the same as Open Graph?

They do the same job for different platforms. Open Graph (og:) tags are read by Facebook, LinkedIn, Slack and others; X reads twitter: tags first and falls back to og: tags. Most sites set both.

Each one opens on its own page and works straight away, with no sign-up.

Explorar más herramientas gratuitas:Generador de SchemaGenerador de etiquetas MetaGenerador de LLMs.txtBrowse all free tools

¿Quieres conseguir más menciones en la IA?

Twitter Card Checker is one piece of the puzzle. See how ChatGPT, Gemini, Perplexity, and Google AI Overviews actually view your brand, and get a prioritised list of fixes, with a free AEO & GEO audit from AI Rank Lab.

One check is a start. The audit checks the whole site.

Realizar una auditoría AEO y GEO gratuita or Ver precios.

  • Scores SEO, answer-engine (AEO) and generative-engine (GEO) readiness
  • Lists the fixes, page by page
  • Then track whether ChatGPT, Gemini, Perplexity and Google AI Overviews cite you
fieldnote.app4,571 credits

Site audit

fieldnote.app · SEO, AEO and GEO

Illustrative data
SEO
82
+6
AEO
64
+11
GEO
58
+9
Pages
48
Fixesby impact
  • /pricing · Missing H1High
  • /blog/guide · No FAQ schemaMedium
  • /llms.txt · Not foundMedium
  • /about · Meta description too longLow

See where your whole site stands

Paste your site. The free audit scores it for SEO, answer engines and generative engines, with the fixes.

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