Open Graph Checker
Enter any URL to check its Open Graph tags, see social media previews, and find missing meta tags.
Works with any public URL. Localhost URLs work when running this tool locally in dev mode.
What are Open Graph tags?
Open Graph (OG) tags are meta tags in your HTML that control how your content appears when shared on social media platforms like Facebook, LinkedIn, Twitter, WhatsApp, and Slack. Without OG tags, platforms guess the title, description, and image — often producing ugly or incorrect previews that hurt click-through rates.
Required Open Graph tags
| Tag | Property | Description |
|---|---|---|
| Title | og:title | The title shown when shared (50-60 chars) |
| Description | og:description | Summary text (under 200 chars) |
| Image | og:image | Preview image (1200x630px recommended) |
| URL | og:url | Canonical URL of the page |
| Type | og:type | Content type (website, article, product) |
OG image sizes by platform
| Platform | Recommended Size | Aspect Ratio |
|---|---|---|
| 1200 x 630 px | 1.91:1 | |
| 1200 x 628 px | 1.91:1 | |
| 1200 x 627 px | 1.91:1 | |
| 300 x 200 px minimum | 3:2 | |
| Slack | 500 x 250 px minimum | 2:1 |
How to add Open Graph tags to your website
- Enter your URL in the checker above to see current tags
- Review the audit — fix any missing or warning tags
- Add the required
<meta>tags to your page's<head> - Use Facebook's Sharing Debugger to clear cached previews
- Re-check with this tool to verify all tags are present
Frequently Asked Questions
What is the ideal OG image size?
1200 x 630 pixels works across all major platforms (Facebook, Twitter, LinkedIn, WhatsApp). Use JPEG or PNG format and keep file size under 1MB for fast loading.
Why isn't my OG image showing on social media?
Common causes: the image URL returns a 404, the image is too small (under 200x200px), the URL uses HTTP instead of HTTPS, or the platform has cached an old version. Use Facebook's Sharing Debugger to force a refresh.
Do I need both OG tags and Twitter tags?
Twitter will fall back to OG tags if Twitter-specific tags are not present. However, adding twitter:card is recommended to control the card type (summary vs. summary_large_image). For maximum control, set both.
Can I check localhost URLs?
Yes — localhost URLs work when you run this tool locally in development mode, since the server-side fetch can reach your local server directly. In the deployed production version, the server cannot reach your machine's localhost. In that case, use a tunneling service like ngrok to expose your local server with a public URL.
How does WhatsApp decide what preview to show?
WhatsApp reads OG tags (og:title, og:description, og:image) from the shared URL. It requires og:image to be at least 300x200 pixels and accessible via HTTPS. WhatsApp caches previews aggressively — clearing the cache requires resharing the link after waiting.