Test and Optimize Open Graph & Twitter Social Cards
When links are shared on social media platforms like X (Twitter), Facebook, LinkedIn, Slack, and Discord, web crawlers scan the page's HTML head for Open Graph (og:title, og:image, og:description) and Twitter Card meta tags. If tags are missing, misconfigured, or improperly sized, links appear as plain text or broken cards, drastically reducing click-through rates.
This previewer provides instant visual simulation of how your website preview will look across major search and social feeds. Test title lengths to prevent truncation (under 60 characters), verify description readability (under 160 characters), and preview image aspect ratios (1200x630px recommended) before deploying changes to production.
Frequently Asked Questions
What are the recommended dimensions for Open Graph images?
The optimal dimension for Open Graph images is 1200 x 630 pixels (1.91:1 aspect ratio). This resolution ensures sharp rendering across high-DPI smartphone screens and desktop news feeds.
Why doesn't social media update my card preview after publishing?
Social networks aggressively cache metadata for shared URLs. When updating tags, use official platform debuggers (such as Twitter Card Validator or Facebook Sharing Debugger) to force a cache refresh.
Does this previewer scrape my site through a backend proxy?
No. You can test your meta tag values manually or paste HTML snippets directly. Everything renders client-side in your current browser tab without outbound scraping servers.