What is Open Graph and why is it important?

Open Graph is a metadata protocol that controls how URLs appear when shared on social networks like Facebook, LinkedIn, and Slack. Proper Open Graph tags ensure links display rich images, accurate titles, and clear descriptions, significantly increasing click-through rates.

What is the recommended size for an og:image?

The optimal og:image dimension is 1200 x 630 pixels, which maintains a 1.91:1 aspect ratio. This ensures your social graphic renders crisply on high-DPI desktop screens and mobile feeds without awkward cropping.

Why isn't Facebook or LinkedIn showing my updated image?

Social networks aggressively cache Open Graph metadata. When you update an og:image, you must use their official debugging tools (Facebook Sharing Debugger, LinkedIn Post Inspector) to clear the cached preview.

What is the difference between Open Graph and Twitter Cards?

Open Graph is the universal standard used by Facebook, LinkedIn, Discord, and Slack. Twitter Cards are proprietary meta tags specifically for Twitter/X, although Twitter will fall back to Open Graph tags if Twitter Card tags are omitted.

Is this Open Graph checker free?

Yes, our Open Graph testing and debugging tool is 100% free to use with no account, credits, or limits required.

Open Graph Checker

Check Open Graph and Twitter Card meta tags on any URL. See how your page appears when shared on social media.

URL to Check

Free Online Open Graph Checker — Preview & Debug Social Meta Tags

An Open Graph checker is a free SEO and social media auditing tool that inspects how web pages render when shared across Facebook, LinkedIn, Twitter (X), Slack, and Discord by validating og: meta tags. Introduced by Facebook in 2010 and now adopted universally across the digital web, the Open Graph protocol allows website publishers to define how their content appears within social feeds by embedding structured metadata within the HTML <head> element. When an Open Graph tag suite is properly configured, shared URLs transform from plain, unappealing text links into rich media social cards complete with an enticing headline, a compelling summary, and a crisp high-resolution feature graphic that drives click-through rates. When social platform crawlers (such as facebookexternalhit, LinkedInBot, Twitterbot, or Discordbot) scrape a webpage, they query specific standardized meta properties: og:title (the social headline, optimized at 40-60 characters), og:description (a punchy summary between 65-155 characters), og:image (the featured banner, standardized at 1200x630 pixels for 1.91:1 aspect ratio retina displays), og:url (the canonical link reference), and og:type (such as 'website' or 'article'). Missing, misconfigured, or malformed tags frequently result in broken social previews, blurry low-resolution thumbnails, truncated headlines, or embarrassing fallback images pulled indiscriminately from page ads or footer logos. Social media bots exhibit strict caching behaviors and operational quirks that can frustrate developers and marketing teams. When a new article is shared for the very first time, Facebook's crawler may encounter an asynchronous image generation timeout if og:image dimensions (og:image:width and og:image:height) are not explicitly declared in the HTML header, causing the first share to render without an image entirely. Furthermore, edge CDNs caching stale 301 redirects, relative image URLs instead of fully qualified HTTPS addresses, or security firewalls (like Cloudflare bot management) blocking social crawler user agents can completely disrupt your social visibility. Our free online Open Graph checker inspects any live URL or raw HTML snippet in seconds, providing real-time interactive previews of how your card will appear in Facebook feeds, LinkedIn professional updates, Twitter/X summary cards, and Slack messaging channels. The tool verifies that your og:image uses an absolute HTTPS URL, conforms to recommended aspect ratios, and responds with a healthy HTTP 200 status code. It also checks complementary Twitter Card markup (twitter:card, twitter:image, twitter:title) and schema structured data. Whether you are preparing a major product launch, optimizing blog post distribution, or debugging why a recent page update isn't refreshing on social networks, our tool diagnoses social metadata gaps instantly.

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100% private — processed in your browser. Nothing uploaded to any server.

How It Works

This open graph checker runs entirely in your browser. No data is uploaded to any server. Here is the process:

1Open the tool in your browser — no download or installation needed.
2Enter your input or upload your file. All processing happens locally using JavaScript.
3Get your result instantly. Copy or download with one click.

Your data never leaves your device. You can verify this by opening your browser's Network tab in developer tools.

Key Features of Our Open Graph Checker

✓Real-time visual preview of social share cards across Facebook, LinkedIn, Twitter/X, and Slack
✓Comprehensive validation of core Open Graph properties: og:title, og:description, og:image, and og:url
✓Image dimension and aspect ratio checker verifying optimal 1200x630px high-resolution standards
✓Detection of common social preview bugs: relative image paths, missing fallback descriptions, and crawler timeouts
✓Complementary Twitter Card auditing supporting summary and summary_large_image formats
✓100% free browser-based execution with zero registration, API keys, or subscriptions required

How to Use Open Graph Checker — Step by Step

1Enter the full URL of the webpage you want to inspect into the input field.
2Click Check Open Graph to fetch and parse the page's HTML head metadata.
3Review the live interactive social card previews for Facebook, LinkedIn, Twitter/X, and Slack.
4Inspect the detailed tag diagnostic table to identify missing, truncated, or invalid properties.
5Copy the recommended fix code snippets to update your website's HTML template or CMS.