Why does my image not show on Twitter?

Twitter requires og:image or twitter:image. The image must be at least 600×314px for summary_large_image cards. Check if twitter:card is set to 'summary_large_image'.

How long does it take for social platforms to update?

After updating your meta tags, social platforms cache previews. Twitter/X updates within minutes via its Card Validator. LinkedIn may take 7 days. Facebook uses the Sharing Debugger to force a refresh.

Is the target URL notified?

Yes — the target URL receives an HTTP GET request from ToolDock's server with User-Agent 'ToolDock OG Checker'. This is similar to Googlebot or social crawlers fetching your page.

OpenGraph Previewer

Uses external API

Preview how any URL looks when shared on Twitter, LinkedIn, Facebook, and Slack.

Preview how any URL appears when shared on Twitter/X, LinkedIn, Facebook, and Slack. Fetches og: and twitter: meta tags and shows realistic social card previews with missing tag warnings.

🌐

Server-side — ToolDock fetches the URL you enter to read its meta tags. The target website will see a request from our server.

🌐 Uses external API · See disclaimer above

How to use

Enter a URL
Type or paste the URL you want to preview. Press Enter or click Preview.
Review social cards
See how the link appears on Twitter/X, LinkedIn, Facebook, and Slack. Each card uses the actual og: and twitter: tags from the page.
Fix missing tags
Yellow warnings indicate missing og: tags. Add them to your <head> to ensure rich previews on all platforms.
Copy the <head> snippet
Copy the detected meta tags as a ready-to-use HTML snippet to reference or reuse.

Common use cases

Checking OG tags before publishing — Preview how a blog post or landing page appears on Twitter and LinkedIn before sharing to catch missing or incorrect og:image tags.
Auditing an existing site's social previews — Paste any URL to see which OG tags are present, which are missing, and what the actual social cards look like across platforms.

Examples

Check your homepage
Enter your site URL to see if og:image, og:title, and og:description are all present
Output
```
4 social card previews + list of any missing tags
```

Frequently asked questions

Why does my image not show on Twitter?: Twitter requires og:image or twitter:image. The image must be at least 600×314px for summary_large_image cards. Check if twitter:card is set to 'summary_large_image'.
How long does it take for social platforms to update?: After updating your meta tags, social platforms cache previews. Twitter/X updates within minutes via its Card Validator. LinkedIn may take 7 days. Facebook uses the Sharing Debugger to force a refresh.
Is the target URL notified?: Yes — the target URL receives an HTTP GET request from ToolDock's server with User-Agent 'ToolDock OG Checker'. This is similar to Googlebot or social crawlers fetching your page.

Key concepts

og:image: The Open Graph meta tag that specifies the image shown in social share cards — recommended size is 1200×630 pixels.
Twitter Card: A set of twitter:* meta tags that control how a link appears as a card on X/Twitter — types include summary, summary_large_image, and app.

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