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OG & Twitter Cards

Social Preview
Checker & Validator

See exactly how your page looks when shared on Facebook, Twitter, LinkedIn, and WhatsApp. Validate Open Graph and Twitter Card tags.

4 Platforms
100% Free
Instant Preview

Social Preview FAQ

What are Open Graph tags?
Open Graph (OG) tags are meta tags that control how your page appears when shared on Facebook, LinkedIn, WhatsApp, and other platforms. They define the title, description, and image for link previews.
What are Twitter Cards?
Twitter Cards are meta tags specific to Twitter/X that control link previews. The most common type is summary_large_image which shows a large preview image with title and description.
What image size should I use for social previews?
For Facebook/LinkedIn: 1200x630px. For Twitter summary_large_image: 1200x628px. Always use high-quality images that are at least 600px wide.
Do social previews affect SEO?
Not directly, but good social previews significantly increase click-through rates from social media, driving more traffic. More engagement signals can indirectly improve SEO.

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About this tool

The first time someone shares your link in Slack and it renders as a naked URL, it's a small heartbreak. It's also the cheapest possible engagement loss — a fix that takes ten minutes and pays back forever.

This previewer renders your URL exactly the way Twitter/X, LinkedIn, Facebook, Slack, Discord, and iMessage do — pulling og:title, og:description, og:image, twitter:card, and the half-dozen related tags. We flag the common gotchas: missing og:image (the single biggest engagement killer), images smaller than 1200×630, descriptions that get truncated on mobile, and the situation where your og:url disagrees with your canonical (which makes Facebook cache the wrong page forever).

Worth knowing: every social platform caches OG metadata aggressively. Once Facebook crawls a URL, it can be 24+ hours before they re-crawl, and edits to your tags won't reflect in shares until they do. Use Facebook's Sharing Debugger or LinkedIn's Post Inspector to force a re-fetch the moment you push changes.

Frequently asked questions

What does "social preview" mean?+
The card that appears when your link is shared on Twitter/X, LinkedIn, Facebook, Slack, Discord, or in iMessage. It's controlled by Open Graph (og:*) and Twitter Card (twitter:*) meta tags.
Which OG tags matter most?+
og:title, og:description, og:image, and og:url. Without og:image, your link shares as a plain text snippet — which gets ~3x less engagement.
What size should my OG image be?+
1200×630 pixels is the standard. LinkedIn and Twitter both crop to this ratio. Keep critical text in the center 1100×600 region to survive cropping.
Why doesn't my new image show up when I share?+
Social platforms cache OG metadata aggressively. Use Facebook's Sharing Debugger or LinkedIn's Post Inspector to force a re-fetch after updating tags.

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