Social metadata QA
Twitter Card HTML Checker
Paste page HTML to verify the X card type, content, image delivery, Open Graph fallbacks, duplicates, and metadata conflicts before launch.
Ready100/100
Page HTML
Paste a full document or the metadata from its head section. Analysis stays in your browser.
Pre-publish checks
Critical failures block a reliable card; warnings identify fallback or maintenance risks.
twitter:card is presentCritical
Declare twitter:card so X knows which layout to request. Value: summary_large_image.
Card type is supportedCritical
Use summary, summary_large_image, app, or player. Value: summary_large_image.
Share title is availableCritical
Provide a clear title directly or through a documented fallback. Direct source: twitter:title.
Title length is practicalRecommended
Keep the effective title concise enough for card layouts. Length: 24/70.
Share description is availableCritical
Provide useful share copy rather than relying on missing page text. Direct source: twitter:description.
Description length is practicalRecommended
Keep the effective description at or below 200 characters. Length: 77/200.
Share image is availableCritical
Use a dedicated share image or a valid og:image fallback. Direct source: twitter:image.
Image URL is crawlableCritical
Use an absolute HTTPS URL that a crawler can request. Value: https://tboxio.com/og-image.png.
Image alt text is availableRecommended
Describe meaningful image content for accessibility. Direct source: twitter:image:alt.
Twitter tags are uniqueRecommended
Keep one authoritative value for each Twitter tag. No issue detected.
Account handles are validOptional
Use an @handle with up to 15 letters, numbers, or underscores. No issue detected.
Twitter and OG values agreeRecommended
Intentional platform variants are fine; review accidental differences. No issue detected.
Twitter Card HTML Report
Copy or download a Markdown handoff for publishing QA.
# Website launch page - Twitter Card HTML Report - Score: 100/100 - Status: ready ## Effective values - twitter:title: Website Launch Checklist (twitter:title) - twitter:description: Check SEO, social cards, tracking, performance, and assets before going live. (twitter:description) - twitter:image: https://tboxio.com/og-image.png (twitter:image) - twitter:image:alt: tboxio website launch checklist (twitter:image:alt) ## Checks - [x] card - value=summary_large_image - [x] card-type - value=summary_large_image - [x] title - value=Website Launch Checklist; source=twitter:title - [x] title-length - length=24; limit=70 - [x] description - value=Check SEO, social cards, tracking, performance, and assets before going live.; source=twitter:description - [x] description-length - length=77; limit=200 - [x] image - value=https://tboxio.com/og-image.png; source=twitter:image - [x] image-url - value=https://tboxio.com/og-image.png - [x] image-alt - value=tboxio website launch checklist; source=twitter:image:alt - [x] duplicates - count=0 - [x] accounts - [x] og-consistency - comparisons=title:matching, description:matching, image:matching ## Fallback rules - Twitter metadata overrides Open Graph fallback values when both are present.