Twitter Card Validator

Free Twitter card validator — preview how your page looks when shared on Twitter / X. Validate twitter:card meta tags, check card rendering, and get recommendations to improve engagement.

What are Twitter Cards?

Twitter Cards are rich media attachments that appear when a URL is shared on X (formerly Twitter). Instead of showing a plain link, the platform reads meta tags from your page's HTML and renders a card with an image, title, and description. There are two common card types: summary (small thumbnail) and summary_large_image (full-width image).

Required meta tags

At minimum, you need twitter:card to specify the card type. X will fall back to Open Graph tags (og:title, og:description, og:image) for title, description, and image if the Twitter-specific tags are missing. For the best results, include both Twitter and Open Graph tags.

Image guidelines

summary_large_image: minimum 300x157px, recommended 1200x628px, 1.91:1 aspect ratio
summary: minimum 144x144px, recommended 240x240px, 1:1 aspect ratio
Images must be less than 5MB
Supported formats: JPG, PNG, GIF, and WebP

Why check your cards?

Posts with rich cards get significantly more engagement than plain text links. A missing image, truncated title, or broken meta tag means your content looks generic in the timeline. This tool fetches your page, extracts all relevant meta tags, shows you exactly how the card will render, and flags issues before you share.

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