Open Graph Readiness Score
Separate passes, warnings, and failures with specific fixes.
Open Graph Checker: Test OG Tags, Images & Previews
Run a live Open Graph test for any URL. Inspect the tags and share image, preview the resulting cards, trace redirects, and copy the exact fixes your page needs.
Reviewed September 23, 2026 · Maintained by LinkGlimpse · How the diagnostics work
What the Open Graph Checker Tests
Raw OG & Twitter Tag Inspector
Verify the exact Open Graph, Twitter, robots, and canonical values found.
OG Image Validation
Check whether the image responds publicly, its format, byte size, and dimensions.
Shareable Metadata Report
Copy, share, or download the live report for a developer, client, or release checklist.
Need a platform-specific workflow? Use the Twitter Card validator, LinkedIn post preview, or Facebook Open Graph debugger.
Copy for an AI agent
Generate a self-contained repair prompt with the failed checks, current tags, suggested code, and verification requirements.
Compare before and after
Diff a production URL against staging or a replacement page before you ship metadata changes.
Compare two URLs →Keep a live report URL
Share a re-runnable report link. It fetches the page again so collaborators see the latest deployed metadata.
View report examples →How to Choose the Best Open Graph Checker
The best checker for a release workflow should fetch the live public URL, show both the visual result and the underlying metadata, test the share image and redirects, and explain what to fix. It should also be clear about what it cannot verify, including private platform rendering and cache-refresh timing.
Live fetch evidence
Confirm the final URL, response, redirect path, canonical, robots directives, and metadata returned by the deployed page.
Visual and raw inspection
Review representative cards alongside the exact Open Graph and Twitter Card values instead of relying on a screenshot alone.
Image and repair checks
Verify image reachability, format, byte size, and detectable dimensions, then connect each warning to a practical fix.
Reproducible handoff
Keep a report that another person or agent can rerun after deployment, with limitations and methodology stated plainly.
When LinkGlimpse is a good fit
Use it when you want a free, open-source, no-signup workflow that combines multi-platform previews, metadata diagnostics, copy-ready fixes, shareable reports, before-and-after comparison, and an AI-agent handoff.
When to use a platform tool instead
Use the official Facebook debugger or LinkedIn Post Inspector when you need that platform to refresh its cache. LinkGlimpse can verify the public metadata you deployed, but it cannot clear a platform cache or guarantee a private renderer's final card.
How to Run an Open Graph Test
- 1. Enter the final public URL.
The checker follows and records redirects, fetches the HTML, and inspects the declared share image.
- 2. Review previews and failures.
Confirm the visible title, description, and crop, then work through warnings in the diagnostic report.
- 3. Copy a fix and retest.
Paste the suggested code or AI-agent prompt into your workflow, deploy, and rerun the same URL to verify it.
Minimum Open Graph Tags
A reliable link preview starts with one clear value for each core property. Use absolute HTTPS URLs for the page and image.
<meta property="og:title" content="A clear, specific title" />
<meta property="og:description" content="A concise reason to open this page." />
<meta property="og:image" content="https://example.com/social-card.jpg" />
<meta property="og:url" content="https://example.com/page" />
<meta property="og:type" content="website" />
<meta name="twitter:card" content="summary_large_image" />Fix the Most Common Open Graph Problems
Open Graph image not showing
Debug missing, blocked, relative, or incorrectly sized share images.
Twitter/X Card preview not showing
Fix card type, image, fallback, crawler, and cache problems.
LinkedIn preview not updating
Separate live metadata problems from LinkedIn cache problems.
Facebook link preview wrong
Correct stale titles, images, descriptions, and canonical mismatches.
Open Graph image sizes by platform
Choose a safe aspect ratio, dimensions, format, and file size.
Complete OG tag templates
Copy implementation examples for HTML, Next.js, React, and WordPress.
Open Graph Checker Questions
What does the Open Graph checker test?
It fetches the public page, extracts Open Graph and Twitter Card tags, checks canonical and robots directives, inspects the share image response, and turns the findings into actionable checks.
Can I inspect the exact tags LinkGlimpse found?
Yes. Expand the raw-tag view, copy a fix for any warning, download the JSON report, or copy a complete repair prompt for an AI coding agent.
Does a high score guarantee the same preview on every platform?
No checker can control platform caches or private crawler rules. The score confirms that the public metadata and assets contain the core signals those platforms use.