Validates Twitter Card meta tags for social media sharing optimization
The Twitter Card Checker validates that HTML pages contain proper Twitter Card meta tags according to Twitter's Card specification. Twitter Cards enhance how your content appears when shared on Twitter, providing rich previews with images, titles, and descriptions. The checker analyzes the HTML document's <head> section to identify and validate Twitter Card meta tags. It looks for: 1. Meta Tag Detection: Scans for <meta> tags with name or property attributes starting with "twitter:" 2. Required Tag Validation: Ensures mandatory tags (twitter:card and twitter:title) are present and have non-empty values 3. Card Type Validation: Verifies that twitter:card values are valid (summary, summary_large_image, app, player) 4. URL Validation: Checks that image and URL references are absolute URLs 5. Semantic Validation: Validates card-type-specific requirements (e.g., summary_large_image requires twitter:image) 6. Accessibility Check: Ensures image alt text is provided when images are present 7. Duplicate Detection: Identifies duplicate meta tags that could cause conflicts Output Results: - Success: All required Twitter Card tags are present and properly configured - Warning: Twitter Card tags are present but have configuration issues - Fail: Required Twitter Card tags are missing or completely empty
This checker validates that HTML pages contain proper Twitter Card meta tags for optimal Twitter sharing and preview generation. It scans for Twitter Card meta tags (twitter:card, twitter:title, etc.), validates card types and required attributes, checks for semantic consistency and URL formats, and identifies missing required tags and configuration issues.
| Status | Condition | Test Logic |
|---|---|---|
| SUCCESS | Required Twitter Card tags present | All required tags found with valid values |
| WARNING | Twitter Card tags with issues | Tags present but with configuration problems |
| FAIL | Missing required Twitter Card tags | Required tags missing or empty |
Poor Social Media Presence: Without Twitter Cards, your content may appear unprofessional when shared on Twitter. Reduced Engagement: Poor previews can reduce click-through rates from Twitter. Brand Inconsistency: Inconsistent Twitter appearance can damage brand perception.
Add this checker to your monitoring setup and start identifying issues on your websites today.