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Validate & preview Open Graph and Twitter/X card tags for Facebook, LinkedIn, X, Slack & more, from a live URL or by hand.
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Open Graph Validator is a free, browser-based tool built for one job: validate & preview open graph and twitter/x card tags for facebook, linkedin, x, slack & more, from a live url or by hand. It is part of ToolsMonk's seo tools collection, so you can finish the work without downloading software, creating an account, or jumping between multiple websites.
Common scenarios include making sure a link looks right when shared on facebook, linkedin and slack, auditing and fixing the open graph tags on an existing page, and generating a complete social-preview meta block for a new page. The browser-based design means you can switch devices mid-task and pick up right where you left off, whether it's a one-time job or part of a daily workflow.
Everything about Open Graph Validator is tuned for speed to first result, with privacy-friendly processing and the rest of ToolsMonk's tools nearby when the next task comes up.
| Price | Free, no signup, no paywall, no watermark |
|---|---|
| Works on | Any modern browser: desktop, tablet, and mobile |
| Processing | In your browser, files never leave your device |
| Account required | None |
| Category | SEO Tools |
Import a URL to load existing tags, or fill in title, description, URL and image
Switch between the Facebook, X, LinkedIn and Slack previews to see each platform
The tool loads your image and flags dimension or aspect-ratio problems
Copy the generated Open Graph + Twitter tags into your page's <head>
Live previews for Facebook, LinkedIn, X/Twitter and Slack from one form
Import a URL to pull and audit a page's existing Open Graph tags
Real image checks, loads your og:image to verify dimensions and aspect ratio
Outputs synced Open Graph and Twitter Card tags (Twitter falls back to og:*)
HTML-escaped output so quotes or brackets in your text can't break the tags
Flags the mistakes that cause blank shares: missing image, relative URLs, wrong ratio
Making sure a link looks right when shared on Facebook, LinkedIn and Slack
Auditing and fixing the Open Graph tags on an existing page
Generating a complete social-preview meta block for a new page
Diagnosing why a shared link shows no image or the wrong title
Open Graph Validator exists to make one job effortless: validate & preview open graph and twitter/x card tags for facebook, linkedin, x, slack & more, from a live url or by hand. Professionals, students, and one-time visitors all get the same instant, accurate results in the browser: no installation, no account, no waiting.
All processing runs locally in your browser, so your files and data never leave your device. The interface adapts to any modern browser and screen size, so the SEO Tools workflow you rely on at a desk is the same one you get on a tablet or phone.
When someone shares your link, Open Graph tags decide whether it appears as a rich card with your title, description and image, or a blank, ignorable line. This generator lets you build those tags with live previews for Facebook, LinkedIn, X/Twitter and Slack side by side, so you can see the same link the way each platform renders it.
It goes further than typing tags: it actually loads your og:image in the browser and reports the real dimensions and aspect ratio, warning you when the image is too small, below the recommended 1200×630, or a ratio that will crop badly. Those image problems are the number-one cause of 'my share has no picture'.
You can import a live URL to pull the existing Open Graph tags for auditing, and the output includes synced Twitter Card tags (since X reads og: as a fallback), all HTML-escaped so a quote or bracket in your copy can't break the markup.
Add the tags to your page's <head>, then force a re-scrape with each platform's sharing debugger to clear cached previews. Pair this with the Twitter Card Generator and the Meta Tag Validator for complete search-and-social coverage.
Use a 1200×630 image, it's sharp on retina screens and crops cleanly on every platform
Always use an absolute https URL for og:image; relative paths silently fail on social platforms
After deploying, re-scrape with the platform's debugger to clear the cached old preview
Common questions about this tool, its workflow, and what to expect before you use it.
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Preview
Validate & preview Open Graph and Twitter/X card tags for Facebook, LinkedIn, X, Slack & more, from a live URL or by hand.
Use Open Graph Validator free →Live tool (iframe)
Readers use the real, working tool right on your page, with a small credit line underneath.
Embed card (HTML)