Twitter Card Validator
Validate Twitter Card meta tags and generate ready-to-paste HTML snippets
About this ToolHow it works, benefits & use casesTap to collapse
The Twitter Card Validator checks a Twitter Card configuration against X/Twitter's rules and, when it passes, hands you the matching meta tags. Pick a card type — summary, summary_large_image, app, or player — and fill in the title, description, image URL, image alt text, site and creator handles, and page URL. Live character counters track the 70-character title and 200-character description limits, and a preview card renders your image, title, description, and hostname the way a tweet would. Pressing Validate runs the checks: it requires a title and description, flags overly long fields, warns when an image is missing or a handle does not start with @, and recommends the right image dimensions for your card type. If validation passes, it generates twitter:card, twitter:title, twitter:description, image, and handle tags, plus complementary Open Graph tags, ready to paste into your <head>. Your card data persists in the browser.
How to Use
- 1Choose a card type: Summary, Summary Large Image, App, or Player.
- 2Enter the required Title and Description, watching the 70- and 200-character counters.
- 3Add an image URL and alt text, plus optional site/creator handles and a page URL.
- 4Check the live preview card, then click "Validate & Generate Tags".
- 5Review any errors or warnings; on success, copy or download the generated meta tags from the output panel.
Key Benefits
- Validates required fields and flags titles over 70 or descriptions over 200 characters
- Warns about missing images and handles that do not start with @
- Recommends the correct image dimensions per card type (1200x628 vs 120x120)
- Live preview card mirrors how the share renders, with broken images hidden
- Generates Twitter Card tags plus complementary Open Graph tags on a passing card
- Real-time character counters for the title and description limits
- Card configuration is saved in your browser and output is downloadable
Common Use Cases
- Catching title or description length problems before posting a link
- Confirming a card has an image and properly formatted @handles
- Generating ready-to-paste Twitter and Open Graph tags for a page head
- Previewing how a shared link will appear on X/Twitter during development
- Standardizing card markup across multiple pages or articles
Card configuration
0/70 characters
0/200 characters
Ready-to-paste HTML — add to your page's <head>.
Fill in the card configuration and click Validate & Generate Tags.
Testing your card
After deploying, verify your card at the Twitter Card Validator.
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Missing a card type, title, or description are errors that block tag generation. Everything else — a title over 70 characters, a description over 200, a missing image, handles not starting with @, or image-size advice — is a warning that is reported but still lets the card be considered valid and the tags to generate.
For a summary_large_image card it recommends roughly 1200x628 pixels (a 1.91:1 aspect ratio), and for a summary card it recommends 120x120 pixels (1:1). These appear as warnings to guide you toward the best display; they do not block generation.