Free Open Graph Preview - Test Social Media Cards

Open Graph (og:) tags are HTML meta tags that control how URLs appear when shared on social media. Without them, Facebook/LinkedIn use random page content - often showing wrong images, truncated titles, or no description. With proper og:tags, you control exactly what appears: og:title for headline, og:description for text, og:image for thumbnail, og:url for canonical URL. These tags significantly improve click-through rates on social shares. Twitter uses similar twitter: tags for Twitter Cards. Implement both for maximum compatibility.

Recommended sizes vary by platform: Facebook/LinkedIn: 1200×630px (1.91:1 ratio), minimum 600×315px. Twitter: 1200×675px (16:9) for large cards, 1200×1200px (1:1) for summary cards. Pinterest: 1000×1500px (2:3, tall). Instagram: 1080×1080px (1:1). Use minimum 1200×630px for universal compatibility. Images must be under 8MB, JPG or PNG format. Avoid text overlays on images - Facebook suppresses heavily text-overlaid images. Use og:image:width and og:image:height tags to help platforms render without fetching first.

Social platforms cache meta tags for performance. Facebook caches for days/weeks. Solutions: 1) Use Facebook Sharing Debugger (developers.facebook.com/tools/debug) to scrape fresh data and clear cache. 2) For Twitter, use Card Validator (cards-dev.twitter.com/validator). 3) Add version parameter to og:image URL (image.jpg?v=2) when changing images. 4) Set proper HTTP cache headers for meta tag pages. 5) Wait 24-48 hours for natural cache expiry. Always use debugger tools before major campaigns to force fresh scraping.

Twitter reads Open Graph tags as fallback, but Twitter Cards provide better control. Best practice: implement both. Minimum tags: og:title, og:description, og:image, og:url for general; twitter:card, twitter:title, twitter:description, twitter:image for Twitter-specific. Twitter Card types: "summary" (small image), "summary_large_image" (big image, recommended), "app" (mobile apps), "player" (video/audio). If you only implement Open Graph, Twitter uses those but with limited styling options. For best results on both platforms, implement all tags.

Yes! Use our manual input mode to enter meta tag values without a live URL. This lets you preview how cards will look before deployment. For testing unpublished pages: 1) Add meta tags to HTML. 2) Deploy to staging/dev server. 3) Test staging URL with Facebook Debugger (no public indexing). Or use our tool to preview without live URLs, then validate after publishing. Remember: social platforms can't fetch from localhost or password-protected pages, but our preview tool works with any input.

Never! All social card previews, image loading, and validation happen entirely in your browser. Your URLs, meta tag content, page titles, descriptions, and images are processed locally and never sent to any server. This makes it completely safe for testing unpublished content, confidential campaigns, client projects before launch, or staging URLs you want to keep private. The tool works offline for manual input mode. Live URL fetching uses direct browser requests without our servers as intermediaries.