AVAILABLE FOR WEB, FLUTTER & QA PROJECTS
How to use this tool
1. Input URL or Metadata
Enter your live page URL or enter your title, description, and image URL directly.
2. Choose Card Format
Toggle between Summary Large Image (1200x630, 2:1 aspect ratio) and Compact Summary (1:1 square image).
3. Check Character Limits
Ensure your title stays under 70 characters and description under 200 characters to prevent mobile truncation.
4. Copy Meta Tags
Copy the validated `<meta name="twitter:...">` HTML tags directly into your site's `<head>`.
Formula or logic used
Twitter Card Dimensions & Meta Tag Specifications
X (Twitter) card tags adhere to proprietary Twitter metadata specifications with automatic fallback to standard Open Graph tags if absent.
`summary_large_image`: Recommended dimensions 1200x630 pixels (Aspect ratio 1.91:1 to 2:1). Max file size 5MB.`summary`: Recommended square dimensions 144x144 to 400x400 pixels (Aspect ratio 1:1).Title Limit: Maximum 70 characters visible before ellipsis truncation on mobile timelines.Description Limit: Maximum 200 characters.Fallback Hierarchy: If `twitter:title` or `twitter:image` are missing, X falls back to `og:title` and `og:image`.
Examples
Example 1: Viral Blog Post with Large Image
Large image cards generate up to 3x higher click engagement compared to compact square cards.
Example 2: Product Feature Announcement
Ideal for profile pages, author bios, or utility tools where a wide banner is not required.
Common use cases
Social Media Campaign QA
Validate social preview banners before launching major marketing and product launch campaigns.
Next.js App Router Metadata Validation
Verify that `twitter: { card: 'summary_large_image' }` renders correctly in static builds.
Image Cropping & Text Placement
Ensure central text and logos in your social cards are not cropped by mobile device aspect ratios.
Troubleshooting Blank Link Previews
Identify missing SSL certificates, blocked crawler user-agents, or HTTP redirects preventing image rendering.
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Frequently asked questions
What is the ideal image size for a Twitter Card in 2026?
For `summary_large_image` cards, the optimal size is 1200 x 630 pixels (1.91:1 aspect ratio) with a file size under 5MB (JPG, PNG, or WebP). For standard `summary` cards, use a 1:1 square image of at least 300 x 300 pixels.
Does Twitter (X) use Open Graph tags if Twitter tags are missing?
Yes. If specific `twitter:*` tags are omitted, X will automatically fallback to corresponding Open Graph tags (`og:title`, `og:description`, `og:image`). However, explicitly declaring `twitter:card` is required to ensure the large image layout renders.
Why is my Twitter Card preview showing as a blank white box?
Common causes include an image file size exceeding 5MB, an insecure HTTP image URL on an HTTPS page, server blocking the `Twitterbot` crawler, or lack of an explicit `twitter:card` declaration.
How do I clear the Twitter Card cache for an updated page?
While Twitter discontinued its standalone Card Validator, you can force a cache refresh by pasting your URL into a new tweet draft on X (desktop). The card preview generator will fetch the updated metadata in real time.
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